Engine - Repair (n54) BMW Z4 E89

11 00 039 Checking compression in all cylinders (N43/N53/N54)

1. Read out fault memory of DME control unit
2. Check stored faults
3. Rectify faults
4. Delete fault memory

Read and comply with notes on compression pressure check.

Necessary preliminary tasks

1. Remove spark plugs

Unscrew tip (1) from special tool 11 0 222.

Scheme 70

Prepare special tool 11 0 222 in conjunction with 11 8 732 and 11 8 731.

Scheme 71

Screw special tool 11 0 222 into special tool 11 8 731 to 10 Nm.

Scheme 72

Screw special tool 11 0 222 by hand into spark plug thread and connect special tool 11 0 224.

Use adapter (1) if the compression pressure is being checked with the BMW diagnosis system.

Depress accelerator pedal and actuate starter until compression pressure stops rising.

1. «NOMINAL VALUES»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-technical-data-n54) , compression pressure

Scheme 73

Assemble engine

Delete fault memory.

00 Danger of poisoning if oil is ingested/absorbed through the skin

Danger of poisoning!

Ingesting oil or absorbing through the skin may cause poisoning!

Possible symptoms are

1. Headaches
2. Dizziness
3. Stomach aches
4. Vomiting
5. Diarrhoea
6. Cramps/fits
7. Unconsciousness

Protective measures/rules of conduct

1. Pour oil only into appropriately marked containers
2. Do not pour oil into drinking vessels (drinks bottles, glasses, cups or mugs)
3. Observe country-specific safety regulations

First aid measures

1. Do not induce vomiting. If the person affected is still conscious, he/she must rinse out their mouth with water, drink plenty of water and consult a doctor immediately. If the person affected is unconscious, do not administer anything by mouth, place the person in the recovery position and seek immediate medical attention.

Engine identification

Punch engine numbers at marked surface with number punch.

Magnesium crankcase with sticker

M47/M47TU/M47T2

Scheme 74

M57/M57TU/M57T2

Scheme 75

M67/M67TU

Scheme 76

N47/N47S/N47C/N57 N57S

Scheme 77

M52/M52TU

Scheme 78

M54

Scheme 79

M56

Scheme 80

N40/N45/N45T/N43

Scheme 81

N42/N46/N46T

Scheme 82

N51/N52/N52K/N52T/N53/N54/N55

Scheme 83

N62/N62TU

Scheme 84

N73

Scheme 85

S54

Scheme 86

S85/S65

Scheme 87

W10/W11

Scheme 88

N12/N14/N16/N18

Scheme 89

W17

Scheme 90

Assemble engine.

11 00... Engine oil service (N54, N54T)

Overfilling the engine with engine oil will result in engine damage.

Checking and drip-off times (at least 10 minutes) must be observed.

Recycling

Catch and dispose of drained engine oil in a suitable collecting vessel.

Observe country-specific waste disposal regulations.

Release oil filter cover with special tool 11 9 240 .

Tightening torque 11 42 1AZ .

Note. Engine oil flows out of the oil filter housing and back into the oil sump.

Picture shows E9x

Scheme 91

Note. Presentation: without underbody protection.

Unclip service opening on underbody protection.

Remove screw plug (1) from oil sump and drain engine oil.

Tightening torque 11 13 1AZ .

Installation note

Replace sealing ring.

Picture shows E9x

Scheme 92

Remove and insert oil filter element (1) in direction of arrow.

Installation note

Replace oil filter element (1) and sealing rings (2).

Note. Coat sealing rings (2) with engine oil.

Scheme 93

Secure oil filter cover with special tool 11 9 240 .

Tightening torque 11 42 1AZ .

Note. Pour in ENGINE OIL .

Start engine and run at idle until oil pressure indicator light goes out.

Switch off engine

Check oil filter cover and screw plug on oil sump for leaks.

Assemble engine.

Checking engine oil level

1. Park vehicle on a horizontal surface
2. Allow engine to run at operating temperature for three minutes with increased engine speed (approx. 1100 RPM)
3. Read off engine oil level in instrument panel or on Control Display
4. Top up engine oil if necessary

11 00 590 Exchange engine (N54, N54T)

Necessary preliminary tasks

1. Remove and install «ENGINE»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-00-050-removing-and-installing) .
2. Mount engine on «ASSEMBLY STAND»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-00-mounting-engine-on-assembly) .
3. If necessary, remove foreign bodies from turbocharger group.
4. Check all assemblies and convert to replacement power plant.

Remove transportation locks (1).

Note. Catch escaping engine oil with a suitable cloth (2).

Scheme 94

Transportation locks (1) are no longer needed.

Scheme 95

Modify screw plugs (1) from old power plant.

Insert screw plugs (1).

Tightening torque: 11 42 11AZ.

Secure oil cooler lines with mounting bar (2).

Scheme 96

Assemble engine.

11 00 Mounting engine on assembly stand (N54, N54T)

Necessary preliminary work

1. Remove «ENGINE»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-00-050-removing-and-installing)

Use special tool 11 8 541 to mount engine on special tool 00 2 300 .

Mount engine or engine block with special tool 11 8 542 on 11 8 541.

Scheme 97

11 00... Overview of consumables (Electronic Parts Catalogue)

1.0 Sealing compound for injection.

SEALING COMPOUND REFERENCE CHART - INJECTION

2.0 Sealing compound for application.

SEALING COMPOUND REFERENCE CHART - APPLICATION

3.0 Cleaning agent.

CLEANING AGENT REFERENCE CHART

4.0 Lubricant for application.

LUBRICANT REFERENCE CHART - APPLICATION

5.0 Lubricants to loosen locked screw connections.

LUBRICANT REFERENCE CHART - SCREW CONNECTION

11..... Removing and installing/replacing acoustic cover (N54, N54T)

Release screws (1).

Raise acoustic cover slightly and remove towards front.

Scheme 98

11 00 050 Removing and installing engine (N54, N54T)

Necessary preliminary tasks

1. Disconnect «BATTERY»(/bmw/z4/e89-2009-2013/remont/horns/#general-electrical-system-repair)
2. Secure «ENGINE HOOD/BONNET»(ref-381258-S39331041492010122800000)
3. Remove «AIR FILTER HOUSING»(/bmw/z4/e89-2009-2013/remont/fuel-system/#fuel-system-repair-n54__13-71-000-removing-and-installingreplacing)
4. Remove «FAN COWL»(/bmw/z4/e89-2009-2013/remont/cooling-system-mechanical/#cooling-system-repair-n54__17-11-035-removing-and-installingreplacing) with electric fan
5. Remove «RADIATOR»(/bmw/z4/e89-2009-2013/remont/cooling-system-mechanical/#cooling-system-repair-n54__17-11-000-removing-and-installing)
6. Remove «CAPACITOR FOR HEATING AND AIR CONDITIONING SYSTEM»(/bmw/z4/e89-2009-2013/remont/automatic-hvac-system/#heating-and-air-conditioning-repair__64-53-551-removing-and-installing)
7. Remove «CHARGE AIR COOLER»(/bmw/z4/e89-2009-2013/remont/cooling-system-mechanical/#cooling-system-repair-n54__17-51-000-removing-and-installingreplacing)
8. Remove «EXPANSION TANK»(/bmw/z4/e89-2009-2013/remont/cooling-system-mechanical/#cooling-system-repair-n54__17-11-100-removing-and-installingreplacing) .
9. Detach all coolant hoses from engine
10. Remove rear «AIR DUCT»(/bmw/z4/e89-2009-2013/remont/fuel-system/#fuel-system-repair-n54__13-71-170-removing-and-installingreplacing)
11. Detach vacuum line from brake booster
12. Unfasten engine wiring harness from electronics box and lay to one side
13. Remove «EXHAUST SYSTEM»(/bmw/z4/e89-2009-2013/remont/exhaust/#exhaust-system-repair-n54__18-00-020-removing-and-installing)
14. Remove gearbox. See «2300018 REMOVING AND INSTALLING TRANSMISSION (GS6-53BZ) N54»(/bmw/z4/e89-2009-2013/remont/manual-trans/#manual-transmission-repair-n54__23-00-018-removing-and-installing) or «28 00 001 REMOVING AND INSTALLING TWIN-CLUTCH GEARBOX (GS7D36SG) N54»(/bmw/z4/e89-2009-2013/remont/automatic-trans/#double-clutch-gearbox-repair__28-00-001-removing-and-installing)
15. Release «LOWER SECTION OF STEERING SPINDLE»(/bmw/z4/e89-2009-2013/remont/manual-power-steering/#steering-and-wheel-alignment-repair__32-31-070-removing-and-installingreplacing) from steering gear (do not remove)
16. Release grounding strap on left engine support arm.

Release nut (1) and disconnect positive battery cable (2) from positive battery connection point.

Scheme 99

Disconnect fuel lines (1).

Seal fuel lines with special tool 13 5 161 and

13 5 162.

Disconnect tank vent line (2).

Scheme 100

Release bolt (1) from engine oil pipe on oil-to-water heat exchanger.

Remove engine oil pipe.

Installation note

Replace all seals.

Tightening torque 17 21 1AZ .

Scheme 101

Secure special tool 11 8 680 to lifting eye on gearbox side.

Press locking pin (1) in direction of arrow until locking balls (2) are loose.

Secure special tool 11 8 680 to lifting eye. Release locking pin (1).

Installation note

Special tool 11 8 680 is mounted correctly if the locking balls (2) are locked.

Special tool 11 8 680 is firmly secured to lifting eye.

Scheme 102

Attach special tool 11 0 000 to special tool 11 8 680 in eye (1).

Picture shows E9x.

Scheme 103

Release nut (1) on engine mount on left and right.

Installation note

Replace self-locking nut.

Tightening torque 22 11 2AZ .

Scheme 104

Screw in towing hook (1).

Suspend special tool (4) 11 0 000 from engine crane.

Suspend special tool 11 0 000 from the designated mounting eyelets (2) only.

Unscrew left and right engine mounts.

Remove left engine support arm.

Lift engine out with crane.

Scheme 105

Installation note

Secure special tool (1) 11 7 310 to steering box.

Scheme 106

Assemble engine.

Observe following in case of REPLACEMENT ENGINE .

Check function of Digital Diesel Electronics.

00 Risk of injury if oil comes into contact with eyes and skin

Danger of injury!

Contact with eyes or skin may result in injury!

Possible symptoms are

1. Impaired sight
2. Irritation of the eyes
3. Reddening of the skin
4. Rough and cracked skin

Protective measures/rules of conduct

1. Wear protective goggles
2. Wear oil-resistant protective gloves
3. Observe country-specific safety regulations

First aid measures

1. Eye contact: Rinse eyes immediately with plenty of water for at least 15 minutes; if available, use an eye-rinsing bottle. If irritation of the eyes persists, consult a doctor.
2. Skin contact: Wash off with soap and water immediately. If irritation persists, consult a doctor.

Note. Do not use solvents/thinners.

00 Safety information for working on vehicles with automatic engine start-stop function (MSA)

Observe safety precautions when working on MSA vehicles

Before carrying out practical work on the engine, always ensure that the MSA functionality is deactivated so as to prevent automatic engine starting while work is being carried out in the engine compartment.

MSA function is deactivated by

1. Deactivate MSA by means of button (1) in passenger compartment
2. Open seat belt buckle and driver's door

Scheme 107

1. Open engine bonnet/hood and ensure that engine hood/bonnet contact is not in workshop mode

1. Workshop mode
2. Basic setting (engine hood/bonnet open) B = 7 mm

To make sure that the engine hood/bonnet contact is at the basic setting, if necessary press the hood/bonnet contact up to the limit position before starting work and slowly release.

Scheme 108

When working with diagnosis tools

1. Observe instructions in diagnosis tool

00 Safety instructions for handling oil

Recycling

Observe country-specific waste-disposal regulations.

Measures if oil is unintentionally released

1. Personal precautionary measures: Danger of slipping! Keep non-involved persons away from the work area. Wear personal protective clothing/equipment.
2. Environmental protection measures: Prevent oil from draining into drain channels, sewerage systems, pits, cellars, water and the ground.
3. Limiting spread: Use oil blocks to prevent the surface spread of oil.
4. Cleaning procedure: Bind and dispose of escaped oil with nonflammable absorbents.

Note. Do not flush oil away with water or aqueous cleaning agents.

11 00 670 Securing engine in installation position (N54, N54T)

1. Prior to each use, check the special tools for defects, modifications and operational reliability.
2. Damaged/modified special tools must not be used!
3. No changes or modifications may be made to the special tools!
4. Keep special tools dry, clean and free of grease.

Necessary preliminary tasks

1. Secure «ENGINE HOOD/BONNET»(ref-381258-S39331041492010122800000)
2. Remove rear «AIR DUCT»(/bmw/z4/e89-2009-2013/remont/fuel-system/#fuel-system-repair-n54__13-71-170-removing-and-installingreplacing)

Assemble transverse member 00 6 000 with special tools 00 6 030.

Scheme 109

Screw in towing hook (1).

Scheme 110

The support points on the left side are shown.

Scheme 111

Secure special tool 11 0 020 to spindle 00 6 002.

Fit suitable chains to special tool 11 0 020 and attach to engine towing hook or lifting eye.

Scheme 112

Unscrew nuts (1).

Raise engine approx. 10 mm with transverse member.

Installation note

Replace self-locking nuts.

Tightening torque 22 11 2AZ .

11 12 729 Checking cylinder head for watertightness (N54, N54T)

Necessary preliminary tasks

1. Remove «CYLINDER HEAD»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-12-100-removing-and-installing) .
2. Disassemble «CYLINDER HEAD»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-34-552-removing-and-installing) .

Note. Observe mounting of special tool 11 4 341 on cylinder no. 1

Secure special tool 11 4 341 using bolts 11 4 345 tightened to 25 Nm

Scheme 113

Extend special tool 11 4 341 with special tool 11 4 345.

Installation note

1 cyl is marked.

Scheme 114

Fit special tool 11 4 342 with bolts (1), insert knurled screw in direction of arrow.

Sealing flange must rest flat.

Scheme 115

Secure special tool 11 4 344 with screws (1).

Note. Compressed air at valve (2) must not exceed 3 bar. Heat cylinder head to 60°. Check for bubble formation in a water bath.

Scheme 116

Assemble engine.

11 12 719 Milling cylinder head sealing surface (N54, N54T)

Necessary preliminary tasks

1. Remove «CYLINDER HEAD»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-12-100-removing-and-installing) .
2. Remove «EXHAUST CAMSHAFT»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-31-028-removing-and-installingreplacing) .
3. Remove «INTAKE CAMSHAFT»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-31-025-removing-and-installingreplacing) .
4. Remove «ROLLER CAM FOLLOWERS»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-33-050-removing-and-installing) .
5. Remove all «VALVES»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-34-552-removing-and-installing) .

Check evenness of cylinder head sealing faces with a standard straightedge (1).

Note. Max. deviation from flatness (longitudinal) 0.10 mm.

Scheme 117

Check evenness of cylinder head sealing faces with a standard straightedge (1).

Note. Max. deviation from flatness (transverse) 0.05 mm

Scheme 118

Check cylinder head for WATER LEAKS .

Assemble engine.

11 12 100 Removing and installing cylinder head (N54, N54T)

Necessary preliminary tasks

1. Remove «ENGINE»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-00-050-removing-and-installing)
2. Remove «INTAKE AND EXHAUST CAMSHAFT ADJUSTERS»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-36-046-removing-and-installingreplacing)

Release screws (1).

Unclip timing chain module (3) at junction (2) and remove towards top.

Set down timing chain.

Scheme 119

Installation note

The timing chain is lifted out with a hook only during assembly.

Note. The lowest screw can only be released when the timing chain module is pressed forward slightly.

Release screws (1).

Tightening torque 11 12 3AZ .

Scheme 120

Release cylinder head bolts (1) M9 with special tool 11 4 420 .

Tightening torque 11 12 2AZ .

Scheme 121

Release cylinder head bolts (1) M10 with special tool 11 8 580 from outside inwards.

Tightening torque 11 12 1AZ .

Jointing torque and angle of rotation must be observed without fail.

Scheme 122

Washers (1) of cylinder head bolts can only be removed with a magnet (2) between cylinder head and bearing strip.

Scheme 123

Secure special tool 11 0 320 with existing cylinder head cover bolts (1).

Tightening torque 11 12 4AZ .

Scheme 124

Scheme 125

Insert 11 4 430 special tool into bore holes.

Scheme 126

Remove coarse residues on sealing surfaces with special tool 11 4 471 from cylinder head and crankcase.

Scheme 127

Remove fine residues on sealing surfaces with special tool 11 4 472 from cylinder head and crankcase.

Scheme 128

There must be no fluids or contaminants in any of the threaded holes (1) for the cylinder head bolt connections.

Risk of cracking and corrosion!

Clean all threaded holes.

Installation note

Replace CYLINDER HEAD GASKET .

Scheme 129

Installation note

Fit new cylinder head screws.

Insert cylinder head bolts (1 to 10) with special tool 11 8 580 .

Tightening torque 11 12 1AZ .

Insert cylinder head bolts (11 to 14) with special tool 11 4 420 .

Tightening torque 11 12 2AZ .

Scheme 130

Note. Graphic shows intake and exhaust camshafts removed.

Observe sequence for tightening cylinder head bolts without fail

Installation note

1. Jointing torque
2. 1st angle of rotation
3. 2nd angle of rotation
4. 3rd angle of rotation

All cylinder head bolts 1 to 14 to 45°

Installation note

Replace screws (1).

Tightening torque 11 12 3AZ .

Assemble engine.

11 12 000 Removing and installing/sealing cylinder head cover (N54, N54T)

Necessary preliminary tasks

1. Disconnect «BATTERY»(/bmw/z4/e89-2009-2013/remont/horns/#general-electrical-system-repair)
2. Remove «ROD-TYPE IGNITION COILS»(/bmw/z4/e89-2009-2013/remont/gauges-instrument-panels/#engine-electrical-system-repair-n54__12-13-511-replacing-ignition-coils)
3. Unclip injector «WIRING HARNESS»(/bmw/z4/e89-2009-2013/remont/gauges-instrument-panels/#engine-electrical-system-repair-n54__12-51-100-replacing-wiring-harness)
4. Remove «INJECTORS»(/bmw/z4/e89-2009-2013/remont/fuel-system/#fuel-system-repair-n54__13-53-310-removing-and-installingreplacing)
5. Remove right «TENSION STRUT»(/bmw/z4/e89-2009-2013/remont/oem-general-information/#maintenance-and-general-information-repair-n54)

Disconnect vacuum lines (2) from vacuum lines (1).

Unclip vacuum lines (1).

Scheme 131

Disconnect vacuum lines (1) from vacuum lines (2).

Unclip vacuum line (2) and lay to one side.

Scheme 132

Release screw (1) with special tool 11 8 620 .

Scheme 133

Installation note: Slotted sleeves (2) for guiding ignition coils in cylinder head cover (1) must be replaced. Remove slotted sleeves (2).

Scheme 134

Release screws (1) on cylinder head cover.

Scheme 135

Release screws (1 and 2) along lines.

Tightening torque 11 12 4AZ .

Scheme 136

Installation note

Replace gasket (1).

Press gasket (1) into cylinder head cover.

Scheme 137

Assemble engine.

11 12 101 Replacing cylinder head gasket (N54, N54T)

Necessary preliminary tasks

1. Remove «CYLINDER HEAD»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-12-100-removing-and-installing) .

Insert 11 4 430 special tool into bore holes.

Remove head gasket.

Scheme 138

There must be no fluids or contaminants in any of the threaded holes (1) for the cylinder head bolt connections.

Scheme 139

Identification (1) of head gasket (N54).

Gasket (3) is a beaded metal gasket with rubber coating.

Scheme 140

Check adapter sleeves (1) for damage and firm seating.

Place head gasket (2) in direction of arrow on engine block.

Scheme 141

Note. Check cylinder head for DEVIATION FROM FLATNESS . Check cylinder head for WATER LEAKS .

Assemble engine.

11 13 000 Removing and installing, sealing or replacing oil sump (N54, N54T)

Necessary preliminary tasks

1. Remove engine guard
2. Secure engine in «INSTALLATION POSITION»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-00-670-securing-engine-in)
3. «LOWERING FRONT AXLE»(/bmw/z4/e89-2009-2013/remont/axle-shafts/#front-axle-repair__31-11-506-loweringraising-front-axle)
4. Observe tightening specifications without fail during installation.
5. Drain and add «ENGINE OIL»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-00-engine-oil-service-n54)

Note. On vehicles with option SA205 (automatic transmission), it is necessary to remove the transmission oil cooler lines from the oil sump.

Release bolts (3) on transmission.

Tightening torque 11 13 6AZ .

Detach return hose (2).

Scheme 142

Release bolts along line (1).

Tightening torque 11 13 2 AND 3AZ .

Installation note

Replace aluminum screws.

If necessary, release nuts (4). Remove oil level sensor.

Tightening torque 11 13 8AZ .

Installation note

Replace sealing ring.

Installation note

Replace all seals.

Assemble engine.

11 14 151 Replacing crankshaft radial seal (N54, N54T) up to 12.31.08

Necessary preliminary tasks

1. Remove transmission. See «2300018 REMOVING AND INSTALLING TRANSMISSION (GS6-53BZ) N54»(/bmw/z4/e89-2009-2013/remont/manual-trans/#manual-transmission-repair-n54__23-00-018-removing-and-installing) or «28 00 001 REMOVING AND INSTALLING TWIN-CLUTCH GEARBOX (GS7D36SG) N54»(/bmw/z4/e89-2009-2013/remont/automatic-trans/#double-clutch-gearbox-repair__28-00-001-removing-and-installing) .
2. Remove «FLYWHEEL»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-22-500-removing-and-installingreplacing) .

Note. Radial shaft seal has six removal openings for removal with special tool 11 9 200 .

Scheme 143

Note. If necessary, remove rubber coating (1) on top side of radial shaft seal and expose a removal opening (2) (see graphic).

Scheme 144

Fit special tool 11 9 200 . Insert sheet metal screws into removal opening of radial shaft seal and fasten without play (do not overtighten sheet metal screws).

Screw in spindle (1) slowly and carefully and detach radial shaft seal.

Scheme 145

Installation note

Clean sealing surface (1) and degrease thoroughly in area of housing partition.

Apply a light coat of oil to running surface (2) of radial shaft seal.

Scheme 146

Note. Support bush (4) is supplied with radial shaft seal (1). When radial shaft seal (1) is installed, only support bush (4) may be used as a slip bush. Radial shaft seal (1) has a groove (2) on both left and right sides.

Scheme 147

Note. The required parts are available from the BMW Parts Department (Electronic Parts Catalogue).

Remove screw caps (1) from injector (2).

Screw on metering needle.

Insert piston for pressing out.

Injector (2) contains the sealing compound Loctite, manufacturer's number 193140.

Bottle (3) contains the primer Loctite, manufacturer's number 171000.

Scheme 148

Installation note

Fit support bush (4) with radial shaft seal (1) on crankshaft.

Align groove (2) centrally to housing partition (3).

Coat both grooves (2) on radial shaft seal (1) with Loctite primer, manufacturer's number 171000, and expose to air for approx. one minute.

Push radial shaft seal (1) by hand as far as possible onto running surface.

Carefully remove support bush (4).

Scheme 149

Note. Spacer ring (1) is supplied with radial shaft seal. Screw special tool 11 9 182 with screws (special tool 11 9 184) to crankshaft. Fit spacer ring (1) on preassembled radial shaft seal.

Scheme 150

Draw in radial shaft seal and spacer ring with special tool 11 9 181 in conjunction with special tool 11 9 183.

Then remove spacer ring again.

Scheme 151

Before filling with sealing compound

Insert brush with Loctite primer, manufacturer's number 171000, as far as possible into grooves (1) on radial shaft seal and coat housing partition on engine block.

Scheme 152

Fill both grooves (1) flush with Loctite sealing compound, manufacturer's number 193140.

Scheme 153

Coat surface of sealing compound in both grooves (1) with Loctite primer, manufacturer's number 171000.

Note. Loctite primer, manufacturer's number 171000, binds the Loctite sealing compound, manufacturer's number 193140, and prevents leakage.

Assemble engine.

11 14 151 Replacing radial crankshaft seal on transmission side (N54N54T) from 01.01.09

Necessary preliminary tasks

1. Remove «FLYWHEEL»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-22-500-removing-and-installingreplacing)

Remove magnet wheel (1) from crankshaft.

Scheme 154

Release screw on pulse sensor (1).

Slide PULSE SENSOR (2) upwards.

Scheme 155

Drill a hole with a drill (1) in the radial shaft seal (see arrow).

Scheme 156

Immediately carefully remove shavings on the radial shaft seal (1).

Scheme 157

Screw in special tool 23 0 490 in direction of arrow.

Drive out radial shaft seal with impact weight in direction of arrow.

Scheme 158

Prepare radial shaft seal (1) on special tool 11 8 220.

Scheme 159

Position the radial shaft seal (1) with special tool 11 8 220 on the crankshaft.

Scheme 160

Brush radial shaft seal (1) over the special tool 11 8 220.

Move radial shaft seal (1) parallel up against the crankcase.

Scheme 161

Fasten special tool 11 9 182 (synchronizing key) with special tool 11 9 184 (screw) on the crankshaft.

Scheme 162

Installation note

Prepare special tool 11 9 181 (bush) for installation.

Connect special tool 11 9 185 (ring) onto special tool 11 9 181 (bush).

Scheme 163

Pull on radial shaft seal with special tools 11 9 181 (bush) and 11 9 185 (ring) in combination with special tool 11 9 183 (nut).

Scheme 164

Screw on radial shaft seal with special tool 11 9 183 (nut) to limit position.

Scheme 165

Remove all special tools.

Assemble engine.

11 14 005 Replacing front crankshaft seal (N54, N54T)

Necessary preliminary tasks

1. Remove «VIBRATION DAMPER»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-23-010-removing-and-installingreplacing)

Scheme 166

Turn back special tool 11 9 222.

Push special tool 11 9 221 onto crankshaft hub.

Insert screws (special tool 11 9 224) and tighten down to approx. 20 Nm.

Scheme 167

Screw special tool 11 0 371 to 80 Nm into crankshaft seal.

Screw in spindle 11 0 372.

Release crankshaft seal from crankcase.

Note. Repeat this operation several times if necessary.

Scheme 168

Carefully saw open crankshaft seal (1) at cutting line (2).

Remove crankshaft seal (1) from special tool 11 0 371.

Scheme 169

Installation note

Clean sealing surface (1) and degrease thoroughly in area of crankcase partition.

Apply a light coat of oil to running surface (2) of the crankshaft seal.

Note. Graphic shows an N42 engine by way of example.

Scheme 170

Screw special tool 11 9 232 with screws (special tool 11 9 234) to crankshaft hub.

Scheme 171

Note. Support bush (1) is supplied with crankshaft seal (2). When crankshaft seal (2) is installed, only support bush (1) may be used as a slip bush. Crankshaft seal (2) has a groove on both left and right sides.

Scheme 172

Note. The required parts are available from the BMW Parts Department (Electronic Parts Catalogue).

Remove screw caps (1) from injector (2).

Screw on metering needle.

Insert piston for pressing out or use special tool 11 4 370 .

Push support bush (1) with crankshaft seal (2) onto special tool 11 9 232.

Align groove (3) centrally to crankcase partition (4).

Coat both grooves (3) on crankshaft seal (2) with Loctite primer, manufacturer's number 171000, and expose to air for approx. one minute.

Scheme 173

Draw in crankshaft seal with special tool 11 9 231 in conjunction with special tool 11 9 233 until flush.

Scheme 174

Before filling with sealing compound

Insert brush with Loctite primer, manufacturer's number 171000, as far as possible into grooves (1) on crankshaft seal and coat crankcase partition on engine block.

Note. Graphic shows an N42 engine by way of example.

Scheme 175

Using injector/syringe (2), fill both grooves (3) flush with sealing compound.

Note. Graphic shows an N42 engine by way of example.

Scheme 176

Note. Loctite primer, manufacturer's number 171000, binds the Loctite sealing compound, manufacturer's number 128357, and prevents leakage. Coat surface of sealing compound in both grooves (1) with Loctite primer, manufacturer's number 171000.

Note. Graphic shows an N42 engine by way of example.

Scheme 177

11 14 010 Replacing sealing cap for vacuum pump (N54, N54T)

Necessary preliminary tasks

1. Remove «FAN COWL»(/bmw/z4/e89-2009-2013/remont/cooling-system-mechanical/#cooling-system-repair-n54__17-11-035-removing-and-installingreplacing)
2. Remove alternator «DRIVE BELT»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-28-010-replacing-drive-belt)
3. Remove both drive belt «TENSIONERS»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-28-020-replacing-tensioning-device)

Note. For purposes of clarity, graphics show alternator and power steering pump removed.

Secure special tool 11 8 535 with special tools 11 8 531 and 11 8 537.

Scheme 178

Position special tool 11 8 537 by hand on sealing cover.

Screw in special tool 11 8 534.

Note. The sealing cover is pressed out diagonally during this work step

Scheme 179

Screw in new sealing cover (1) with special tools 11 8 532 and 11 8 533 until flush with crankcase upper section.

Scheme 180

Assemble engine.

11 22 500 Removing and installing/replacing flywheel (N54, N54T)

Necessary preliminary tasks

1. Remove «28 00 001 REMOVING AND INSTALLING TWIN-CLUTCH GEARBOX (GS7D36SG) N54»(/bmw/z4/e89-2009-2013/remont/automatic-trans/#double-clutch-gearbox-repair__28-00-001-removing-and-installing)
2. Remove «CLUTCH»(/bmw/z4/e89-2009-2013/remont/clutches-manual-hydraulic/#clutch-repair-n54__21-21-500-removing-and-installingreplacing)

Enlarge special tool 11 9 260 with an elongated hole.

Enlarge elongated hole on special tool 11 9 260 to 8 mm.

Scheme 181

For vehicles with manual gearboxes

Secure flywheel with special tool 11 9 260 .

Release flywheel bolts with special tool 11 4 180 /

Tightening torque 11 22 2AZ .

Installation note

The flywheel is secured with a dowel pin.

Fit new flywheel screws

Scheme 182

For vehicles with automatic transmissions

Secure flywheel with special tool 11 9 260 .

Release flywheel screws with a suitable tool (1).

Tightening torque 11 22 1AZ .

Installation note

The flywheel is secured with a dowel pin.

Fit new flywheel screws

Scheme 183

Assemble engine.

11 21 531 Replacing all crankshaft main bearings (N54, N54T)

Necessary preliminary tasks

1. Remove «CRANKSHAFT»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-21-500-replacing-crankshaft-n54)

Check setting of oil spray nozzles, adjusting if necessary

Attach special tool 11 8 510 to main bearing screw connection, secure with bolt (1).

Installation note

The oil nozzle must be located precisely in the groove of special tool 11 8 510 .

If necessary, adjust oil nozzle.

Scheme 184

Adjust oil nozzle.

Release screw (1).

Tightening torque 11 11 5AZ .

Scheme 185

Remove bearing shells (2) and (3).

Note. Guide bearing shell (3) is a thrust bearing.

Observe bearing classification. See CRANKSHAFT AND BEARINGS ; CRANKSHAFT AND BEARINGS N54/B30 ; CRANKSHAFT AND BEARINGS N54/B30 or CRANKSHAFT AND BEARINGS N54/B30 .

Scheme 186

Installation note

Bearing shell (1) with lubricant groove must be fitted in crankcase upper section.

Bearing shell (2) without lubricant groove must be fitted in crankcase lower section (bedplate).

Scheme 187

Main bearing classification (1) for crankcase lower half (bedplate), code numbers 1 2 3, see table.

Observe bearing classification. See CRANKSHAFT AND BEARINGS ; CRANKSHAFT AND BEARINGS N54/B30 ; CRANKSHAFT AND BEARINGS N54/B30 ; CRANKSHAFT AND BEARINGS N54/B30 .

Bearing classification (2) of CONNECTING RODS code letters b and r.

Scheme 188

Main bearing classification (1) in crankcase, code letters A/B or C, see table.

Installation note

When all the letters and number code have been determined, the bearing shell color must be allocated.

Scheme 189

Installation note

The letter/number combination produces a bearing shell pairing.

Identification by different colors.

Code letters on crankcase

Code letter A = bearing shell (1) color Yellow.

Code letter B = bearing shell (1) color Green.

Code letter C = bearing shell (1) color Red.

Code numbers on crankshaft

Code number 1 = bearing shell (2) Yellow.

Code number 2 = bearing shell (2) Green.

Code number 3 = bearing shell (2) Red.

Installation example

For bearing 1 with code letter A on the crankcase and code number 1 on the crankshaft bearing shell (1) with the color Yellow is required for the crankcase and bearing shell (2) with the color Yellow for the crankcase lower half (bedplate).

Lager 2: A and 2 colors Yellow and Green.

Lager 3: B and 2 colors Green and Green.

Lager 4: C and 2 colors Red and Green.

Lager 5: B and 1 colors Green and Yellow.

Lager 6: C and 3 colors Red and Red.

Lager 7: C and 1 colors Green and Green.

The color combination Yellow and Red must not be fitted.

Installation note

Possible color combinations for mounting the crankshaft in the crankcase.

CRANKCASE COLOR CODE REFERENCE CHART

CRANKCASE COLOR CODE REFERENCE CHART

Insert all bearing shells (2 and 3).

Only use special tool 11 4 470 to clean sealing surfaces.

Determine bearing play with special tool 00 2 590 .

Installation note

All measuring points must be free from oil and grease.

Use used screws to determine bearing play.

Set up crankcase lower section (bedplate) with bearing shells.

Remove crankcase lower section (bedplate).

Read off bearing play at width of flattened plastic thread and measurement scale.

Crankshaft bearing play radial .

Installation note

Remove plastic thread.

Apply a light coat of oil to bearing shells and crankshaft.

Scheme 190

Install crankcase lower section (bedplate).

Assemble engine.

11 21 500 Replacing crankshaft (N54, N54T)

Necessary preliminary tasks

1. Remove «ENGINE»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-00-050-removing-and-installing)
2. Mount engine on «ASSEMBLY STAND»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-00-mounting-engine-on-assembly)
3. Remove «VIBRATION DAMPER»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-23-010-removing-and-installingreplacing)
4. Remove «OIL SUMP»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-13-000-removing-and-installing)
5. Remove «OIL PUMP»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-41-000-removing-and-installing)
6. Remove «TRIANGULAR DRIVE»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-41-010-removing-and-installingreplacing) for oil pump
7. Remove «TIMING CHAIN MODULE»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-31-051-replacing-timing-chain)
8. Remove «CYLINDER HEAD»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-12-100-removing-and-installing) .
9. Remove «FLYWHEEL»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-22-500-removing-and-installingreplacing)
10. Removing all «PISTONS»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-25-530-removing-and-installingreplacing)

Release screws (1).

Tightening torque 11 13 5AZ .

Installation note

Replace aluminum screws.

Remove oil deflector (2).

Scheme 191

Release screws (1).

Tightening torque 11 11 2AZ .

Unfasten screws (2).

Tightening torque 11 11 3AZ .

Installation note

Replace aluminum screws.

Scheme 192

Release screws (1).

Tightening torque 11 11 4AZ .

Unfasten screws (2).

Tightening torque 11 11 2AZ .

Installation note

Replace aluminum screws.

Release steel screws (1 to 14) from outside inwards.

Tightening torque 11 11 1AZ .

Scheme 193

Release screws (1).

Tightening torque 11 11 3AZ .

Installation note

Replace aluminum screws.

Remove crankshaft lower section in upward direction.

Scheme 194

Remove both crankshaft seals (1).

Note. Graphic shows N46.

Scheme 195

Remove MAIN BEARING SHELLS (2 and 3), replace if necessary.

Remove and install crankshaft (1) in direction of arrow.

Check guide sleeves (1) for damage and correct seating.

Reinstall crankshaft.

Installation note

Lubricate all bearing points with engine oil.

Clean all sealing surfaces.

Note. Graphic shows N46.

Scheme 196

Tighten steel screws (1 to 14) from inside outwards.

Tightening torque 11 11 1AZ .

Tighten screws (2) from inside outwards.

Tightening torque 11 11 2AZ .

Tighten screws (1).

Tightening torque 11 11 4AZ .

Installation note

Replace aluminum screws.

Tighten aluminum screws exclusively with special tool 00 9 120 .

Scheme 197

Set up stand with magnetic base on special tool 11 4 440.

Set up special tool 00 2 510 on stand.

Position special tool 00 2 510 on crankshaft.

Move crankshaft in direction of arrow.

Determine bearing play. See CRANKSHAFT AND BEARINGS ; CRANKSHAFT AND BEARINGS N54/B30 ; CRANKSHAFT AND BEARINGS N54/B30 ; or CRANKSHAFT AND BEARINGS N54/B30 .

Scheme 198

Installation note

Always replace nozzles (1).

Drive in both nozzles (1) with special tool 11 9 360 on left and right into crankcase.

Scheme 199

Installation note

CRANKSHAFT SEAL - replace front.

CRANKSHAFT SEAL - replace rear.

Installation note

Use PRIMER 1.3 AND LIQUID GASKET 1.4 .

Prepare liquid sealing compound (1) in special tool 11 4 370 .

Screw on nozzle for injecting liquid gasket.

Slowly insert liquid sealing compound (1) with special tool 11 4 370 in direction of arrow.

Scheme 200

Stop (seal off) escaping liquid sealing compound with primer 1.3.

(Graphic shows N40).

Assemble engine.

11 21 505 Sealing crankcase lower section (N54, N54T)

Necessary preliminary tasks

1. Remove «ENGINE»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-00-050-removing-and-installing) .
2. «MOUNT ENGINE ON ASSEMBLY STAND»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-00-mounting-engine-on-assembly) .
3. Remove «CLUTCH»(/bmw/z4/e89-2009-2013/remont/clutches-manual-hydraulic/#clutch-repair-n54__21-21-500-removing-and-installingreplacing) (if fitted).
4. Remove left and right engine support arm. See «2211100 REPLACING RIGHT ENGINE SUPPORT ARM (N54)»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-and-gearbox-suspension-repair-n54__22-11-100-replacing-right-engine) ; or «2211110 REPLACING LEFT ENGINE SUPPORT ARM (N54)»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-and-gearbox-suspension-repair-n54__22-11-110-replacing-left-engine)
5. Remove «OIL SUMP»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-13-000-removing-and-installing) .

Release screws (1).

Pull out oil pump intake pipe (2).

Tightening torque: 11 13 5AZ

Scheme 201

Release screws (1).

Tightening torque: 11 13 5AZ .

Installation note

Replace aluminum screws.

Remove oil deflector (2).

Secure oil pump drive gear with 6.0 mm dia. steel pin (3) to oil pump.

Release central bolt (2).

Tightening torque: 11 41 4AZ .

Scheme 202

Unfasten screws (2).

Tightening torque: 11 41 3AZ .

Installation note

Replace aluminum screws.

Scheme 203

Remove screw plug (1) from crankcase at front.

Note. Replace gasket.

Scheme 204

Release screw (1) for oil pump triangular drive with special tool 11 8 640 .

Note. It is not necessary to remove the triangular drive.

Scheme 205

Version 1

Installation note

Replace aluminum screws.

Scheme 206

Version 2

Installation note

Replace aluminum screws.

Scheme 207

Detach sprocket (1) in direction of arrow.

Note. The chain tensioner pushes the timing chain (3) of the triangular drive upward.

Do not remove camshaft sprocket.

Remove oil pump (2) in direction of arrow.

Scheme 208

Installation note

Check spacer bushings (1) for secure seating and damage; replace if necessary.

Align twin surface (3) on oil pump (2) to sprocket wheel.

Install oil pump (2).

Scheme 209

Note. The dowel hole for the TDC setting is located on the intake side underneath the starter motor.

Rotate engine at central bolt and secure flywheel in position with special tool 11 0 300 .

Scheme 210

Secure flywheel with special tool (1) 11 9 260 and special tool (2) 11 9 266.

Note. Make sure that the special tool (1) completely engages in the flywheel teeth (see arrow)

Scheme 211

Automatic transmission

Release flywheel bolts (1).

Release special tool (2).

Remove flywheel (3).

Scheme 212

Manual transmission

Remove dual-mass flywheel.

Secure flywheel with special tool 11 9 260 .

Remove VIBRATION DAMPER .

Release flywheel bolts with special tool 11 4 180 /

Scheme 213

Scheme 214

Release all crankcase bolts (1) along line (2).

Scheme 215

Release crankcase bolts M10 in sequence 14 to 1.

Release crankcase lower section (1) from crankcase upper section (2) with suitable tool (3)

Remove crankcase lower section (1) upwards.

Scheme 216

Carefully remove radial shaft seal (1).

Catch escaping engine oil with a cloth (2).

Scheme 217

Carefully remove radial shaft seal (1) towards front.

Catch escaping engine oil with a cloth (2).

Scheme 218

Scheme 219

Remove sealing compound residues (1) with special tool 11 4 470 .

Remove injector nozzles (2) for liquid sealing compound on left and right.

Installation note

Replace injector nozzles (2).

Clean all threads with compressed air.

Scheme 220

Position crankcase lower section (1) on crankcase upper section.

Screw in all M10 crankcase bolts.

Joint all M10 crankcase bolts (1) 20 NM from inside outwards.

Scheme 221

Identify all M10 crankcase bolts with a colored marking (1) for checking.

Scheme 222

Secure crankcase bolts M10 in sequence 1 to 14 with special tool 00 9 120 .

Tightening torque: 11 11 1AZ.

Insert all crankcase bolts (1).

Tightening torque: 11 11 2, 3 AND 4AZ.

Tighten screw (1) for oil pump triangular drive with special tool 11 8 640 .

Note. Replace screw.

Tightening torque: 11 41 4 AZ .

Tighten screw plug on front of crankcase.

Tightening torque: 11 41 8.

Installation note

Replace sealing ring.

Prepare radial shaft seal (1) on special tool 11 8 220.

Position radial shaft seal (1) with special tool 11 8 220 on crankshaft.

Brush radial shaft seal (1) over special tool 11 8 220.

Move radial shaft seal (1) parallel up against the crankcase.

Screw special tool 11 9 182 with screws (special tool 11 9 184) to crankshaft.

Scheme 223

Installation note

Prepare special tool 11 9 181 for installation. Connect special tool 11 9 185 onto special tool 11 8 181.

Pull on radial shaft seal with special tool 11 9 181 and 11 9 185 in combination with special tool 11 9 183.

Scheme 224

Screw on radial shaft seal with special tool 11 9 183 to limit position.

Installation note

Clean sealing surface (1) and degrease thoroughly in area of housing partition.

Apply a light coat of oil to running surface (2) of radial shaft seal.

Note. Graphic N42.

Push radial shaft seal (1) 11 9 235carefully in direction of arrow on the special tool.

Scheme 225

Screw special tool 11 9 235 with special tool 11 9 234 on crankshaft.

Scheme 226

Align groove (2) of radial shaft seal (1) centered to the housing partition (3.

Scheme 227

Draw in radial shaft seal with special tool 11 9 231 in conjunction with special tool 11 9 233 until flush.

Scheme 228

Drive both injector nozzles (1) on left and right with special tool 11 9 360 into crankcase up to stop.

After fitting both sealing rings, check both sealing ducts for clearance.

Blow compressed air (1) at max. 6 bar into injector nozzle (2).

Compressed air must emerge at both sealing rings on left and right from the outlet bores.

Scheme 229

Installation note

Use PRIMER 1.3 AND LIQUID SEAL 1.4 .

Prepare liquid sealing compound (1) in special tool 11 4 370 .

Injector nozzles for injecting sealing compound are not required.

Scheme 230

Slowly insert liquid sealing compound (1) with special tool 11 4 370 in direction of arrow.

Liquid sealing compound must emerge at radial shaft seals at front and rear.

Stop (seal off) escaping liquid sealing compound with primer 1.3.

Stop (seal off) escaping liquid sealing compound with primer 1.3.

Assemble engine.

Necessary preliminary tasks

1. Remove «TWIN-CLUTCH GEARBOX (GS7D36SG) N54»(/bmw/z4/e89-2009-2013/remont/automatic-trans/#double-clutch-gearbox-repair__28-00-001-removing-and-installing)
2. Remove «CLUTCH»(/bmw/z4/e89-2009-2013/remont/clutches-manual-hydraulic/#clutch-repair-n54__21-21-500-removing-and-installingreplacing)

Enlarge special tool 11 9 260 with an elongated hole.

Enlarge elongated hole on special tool 11 9 260 to 8 mm .

For vehicles with manual gearboxes

Secure flywheel with special tool 11 9 260 .

Release flywheel bolts with special tool 11 4 180 /

Tightening torque 11 22 2AZ .

Installation note

The flywheel is secured with a dowel pin.

Fit new flywheel screws

For vehicles with automatic transmissions

Secure flywheel with special tool 11 9 260 .

Release flywheel screws with a suitable tool (1).

Tightening torque 11 22 1AZ .

Installation note

The flywheel is secured with a dowel pin.

Fit new flywheel screws

Scheme 231

Assemble engine.

11 22 513 Replacing roller bearing for dual-mass flywheel

Necessary preliminary tasks

1. «TRANSMISSION»(/bmw/z4/e89-2009-2013/remont/manual-trans/#manual-transmission-repair-n54__23-00-018-removing-and-installing) removed.
2. Remove «CLUTCH RELEASE BEARING»(/bmw/z4/e89-2009-2013/remont/clutches-manual-hydraulic/#clutch-repair-n54__21-51-500-removing-and-installing)

Pressing out roller bearing

Install special tool 23 4 031 in front of drive shaft spline teeth.

Screw in grease spindle 23 4 033 completely.

Brass tip must immerse fully into roller bearing.

Press in grease with grease gun 23 4 040 until roller bearing is disengaged from drive shaft.

When tensioning spring is compressed to full extent, release grease spindle and twist out slightly until spring is relieved.

Repeat grease press-in procedure until roller bearing has released completely.

Scheme 232

Remove special tool 23 4 031.

Remove pressed-in grease (1) from drive shaft completely.

Then reinstall special tool.

Scheme 233

Pressing in roller bearing

Slide in pressure spindle 23 4 035.

Attach thrust piece 23 4 036 to pressure spindle.

Push roller bearing (1) onto thrust piece.

Scheme 234

Screw in pressure spindle (1) until roller bearing is fully pressed in.

Scheme 235

11 23 010 Removing and installing/replacing vibration damper (N54, N54T)

Necessary preliminary tasks

1. Remove front underbody protection
2. Remove drive belt

Release screws (1).

Tightening torque 11 23 1AZ .

Remove vibration damper (2).

Scheme 236

Assemble engine.

11 24 571 Replacing all connecting rod bearings (N54, N54T)

Necessary preliminary tasks

1. Remove all «PISTONS»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-25-530-removing-and-installingreplacing) .

Possible classifications per connecting rod at top and bottom

r: Connecting rod = Yellow.

Connecting rod bearing cap = Red.

b: Connecting rod = Violet.

Connecting rod bearing cap = Blue.

Scheme 237

Only one color may be fitted per connecting rod and connecting rod bearing cap.

In direction of arrow from (1 to 2) crank pin (1 to 6).

Example

Possible classification: rbbrrb.

Zyl 1: Classification r = rod side Yellow bearing cap side Red.

Zyl 2: Classification b = rod side Violet bearing cap side Blue.

Zyl 3: Classification b = rod side Violet bearing cap side Blue.

Zyl 4: Classification r = rod side Yellow bearing cap side Red.

Zyl 5: Classification r = rod side Yellow bearing cap side Red.

Zyl 6: Classification b = rod side Violet bearing cap side Blue.

Install new connecting rod bearing shells.

In each case insert only one color of bearing shell (1 and 2) for each connecting rod.

Scheme 238

Check connecting rod bearing clearance.

Piston in BDC position.

Fit special tool 00 2 590 (Plastigage type PG 1) to oil-free crankshaft.

Fit bearing cap so that pairing letters match up.

Scheme 239

Use the old connecting rod bolts to check connecting rod clearance.

Tighten down connecting rod bolts with special tool 00 9 120 .

Tightening torque 11 24 1AZ .

Scheme 240

Remove bearing cap. Read off bearing clearance at width of crushed plastic thread with aid of measuring scale.

CONNECTING ROD BEARING PLAY.

1. Remove plastic thread
2. Coat crankshaft and bearing shells with oil.
3. Install new connecting rod bolts and tighten down with special tool «00 9 120»(/bmw/z4/e89-2009-2013/remont/oem-general-information/#maintenance-and-general-information-special-tools-n54) .

Tightening torque 11 24 1AZ .

Scheme 241

Assemble engine.

11 25 530 Removing and installing or replacing all pistons (N16)

Connecting rods and connecting rod bearing caps are denoted with the same pairing letters; mixing them up will result in engine damage.

Piston and gudgeon pins are paired and must not be fitted individually.

Necessary preliminary tasks

1. Remove engine.
2. Mount engine on assembly stand.
3. Remove intake plenum.
4. Remove cylinder head.
5. Remove oil sump.
6. Remove oil pump.

Note. In event of heavy oil carbon residue: Carefully remove oil carbon residue from cylinder wall.

Note. Graphic shows N46.

Scheme 242

Note. Mark all pistons and conrods with a pen prior to removing.

Example N14

Direction of arrow (1) points to camshaft drive.

Cylinder allocation (2) per cylinder.

Scheme 243

Note. Mark all pistons and conrods with a pen prior to removing.

Example

Mark cylinder assignment (1) for the respective cylinder.

Direction of arrow (2) points to timing chain drive.

Scheme 244

Release connecting rod bolts (1).

Tightening torque, 11 24 1AZ .

Remove conrod bearing cap.

Scheme 245

11 9 620 Attach special tool in conrod big end.

Press out connecting rod and piston to cylinder head side.

Scheme 246

Lever out piston pin circlip with a screwdriver in direction of arrow.

Scheme 247

If necessary, replace connecting rods.

Installation note

The gudgeon pin must be able to be pressed through the liner by hand with little force and must not display any significant play.

Scheme 248

Measure piston installation clearance

Measure piston diameter with micrometer at measuring point A from lower edge of piston and offset by 90° to piston pin axis.

Piston diameter at measuring point A.

Scheme 249

Adjust micrometer to cylinder bore of engine block. Set internal calliper on micrometer to zero. Measure bottom, center and top of cylinder bore in direction of travel and direction of engine rotation.

Diameter of cylinder bore.

Piston installation clearance.

Total permissible wear tolerance.

If necessary, replace piston.

Scheme 250

Install all piston rings.

Install all bearing shells.

Coat piston and piston rings with oil.

11 9 670 Pre-install piston in special tool.

Screw special tool 11 9 620 into connecting rod.

Installation note

11 9 620 Check protective lugs on special tool for correct position and damage.

Scheme 251

Insert piston with connecting rod in cylinder.

Insert piston (1) so that arrow on piston crown points to camshaft drive.

If reusing the pistons, assign cylinder allocation (2) to correct cylinder.

Press in piston with special tool 11 9 670.

Scheme 252

Both pairing letters (2) must be together on one side.

Scheme 253

Apply a light coat of oil to crankshaft journals.

Attach connecting rod to crankshaft journal.

Remove special tool 11 9 620.

Fit bearing caps (2) so that pairing letters match up.

Check cylinder identification markings (1).

Direction of arrow (2) points to timing chain drive.

Install new connecting rod bolts (1).

00 9 120 Carry out torsion angle tightening of conrods with special tool.

Tightening torque: 11 24 1AZ

Assemble engine.

11 25 530 Removing and installing/replacing all pistons (N54, N54T)

Necessary preliminary tasks

1. Remove «ENGINE»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-00-050-removing-and-installing)
2. Mount engine on «ASSEMBLY STAND»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-00-mounting-engine-on-assembly)
3. Remove intake «PLENUM»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-61-050-removing-and-installing)
4. Remove «CYLINDER HEAD»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-12-100-removing-and-installing)
5. Remove «OIL SUMP»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-13-000-removing-and-installing)
6. Remove «OIL PUMP»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-41-000-removing-and-installing)

Note. In event of heavy oil carbon residue

Carefully remove oil carbon residue from cylinder wall.

Note. Graphic shows N46.

Do not release screw (1).

OIL SPRAY NOZZLE (2) must not be maladjusted or bent.

If necessary, readjust (risk of damage).

Scheme 254

Release connecting rod bolts (1).

Tightening torque 11 24 1AZ .

Remove connecting rod bearing cap (2) in direction of arrow.

Scheme 255

Screw special tool 11 8 590 into big end of connecting rod.

Press out connecting rod and piston to cylinder head side.

Scheme 256

Preliminary work

Secure special tool 11 8 561 in vice.

Secure piston (1) with connecting rod to special tool 11 8 561.

Scheme 257

To lever out piston circlip (1), support with special tool 11 5 464 on piston (2).

Lever out piston circlip (1) with special tool 11 5 464 in direction of arrow.

Scheme 258

Installation note

If necessary, replace connecting rods.

Installation note

The gudgeon pin must be able to be pressed through the liner by hand with little force and must not display any significant play.

Measuring PISTON INSTALLATION CLEARANCE

Measure piston diameter with micrometer at measuring point A from bottom edge of piston and offset at 90° to the axis of the gudgeon pin.

Piston diameter at measuring point A.

Adjust micrometer to cylinder bore of engine block. Set internal calliper on micrometer to zero. Measure bottom, center and top of cylinder bore in direction of travel and direction of engine rotation.

Diameter of cylinder bore.

Piston installation clearance.

TOTAL PERMISSIBLE WEAR TOLERANCE .

Installation note

If necessary, replace piston.

Insert piston circlip (2) into groove of special tool 11 8 562.

Bring piston circlip (2) into working position (1).

Scheme 259

Slide on special tool 11 8 563 up to piston pin circlip (2)

Special tools 11 8 562 and 11 8 563 are prepared.

Scheme 260

Opening on special tool 11 8 562 must point to piston crown; only then can special tool 11 8 563 be fitted correctly.

If the special tools 11 8 562 and 11 8 563 are not positioned correctly, the piston pin circlip must be driven in using a plastic hammer in direction of arrow.

Note. See graphic.

Scheme 261

Piston pin circlip is correctly installed when opening (1) points downwards.

Scheme 262

Note. B 30.

Install all PISTON RINGS .

Install all BEARING SHELLS .

Coat piston and piston rings with oil.

Pre-install piston (2) in special tool 11 8 141.

Screw on special tool 11 8 590 in connecting rod (2).

Installation note

Make sure protective lugs (1) on special tool 11 8 590 are positioned correctly and check for damage.

Scheme 263

Insert piston with connecting rod in cylinder.

Insert piston so that arrow on piston crown points to camshaft drive.

Press in piston (1) with special tool 11 8 141.

Scheme 264

Scheme 265

Apply a light coat of oil to crank pin.

Assemble connecting rod and crankshaft journal.

Screw off special tool 11 8 560 in anticlockwise direction.

Fit bearing caps (2) so that pairing letters match up.

Install new connecting rod bolts (1).

Tightening torque 11 24 1AZ .

Scheme 266

Adjust torsion angle of connecting rod with special tool 00 9 120 (see illustration).

Tightening torque 11 24 1AZ .

Scheme 267

Assemble engine.

11 25 671 Replacing piston rings on all pistons (N54, N54T)

Necessary preliminary tasks

1. Remove all «PISTONS»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-25-530-removing-and-installingreplacing) .

Measuring axial clearance of piston rings in piston ring groove.

TECHNICAL DATA.

Note. It is not possible to measure the axial clearance of the oil scraper rings.

Scheme 268

Remove compression ring and stepped ring upwards with piston ring pliers.

Oil scraper ring comprises two steel band rings and a support spring.

Note. Oil scraper ring cannot be removed with piston ring pliers. Put aside piston rings in correct sequence and installation position. It might not be possible to find the identification on used piston rings.

Installation note

New pistons may only be installed together with new piston rings.

Scheme 269

Determine See ENGINE BLOCK, CYLINDER CRANKCASE N54/B30 or PISTONS WITH RINGS AND PINS N54/B30 with a feeler gauge.

Scheme 270

Note. Schematic diagram of piston rings.

Installation note

Piston rings with "TOP" identification must point to piston crown.

1. Plain compression ring
2. Piston ring "top"
3. Two-part oil scraper ring

Scheme 271

Note. Oil control ring comprises two steel band rings (1) and a support spring (2).

Installation note

Insert support spring (2) into piston ring groove and then fit steel band rings (1) so that contact points are offset by approx. 120°.

Scheme 272

Offset the contact points (1) of the piston rings by approx. 120° to each other but do not position above the gudgeon pin boss.

Note. See graphic N52.

Scheme 273

Assemble engine.

11 28 010 Replacing drive belt for alternator (N54, N54T)

Necessary preliminary tasks

1. Remove «FAN COWL»(/bmw/z4/e89-2009-2013/remont/cooling-system-mechanical/#cooling-system-repair-n54__17-11-035-removing-and-installingreplacing)

Unfasten hose clip (1).

Release quick-connect fastener (3) 90° on boost pressure hose in direction of arrow.

Pull off air hose (2).

Installation note

Bring lock (3) back 90° into installation position.

Recirculated air hose must audibly snap into place.

Scheme 274

Unclip line (1) from holder (2) in direction of arrow.

Scheme 275

Release coolant hose (1) from bracket (2).

Scheme 276

Release screw (1).

Fold air duct (2) down.

Note. Do not remove air duct (2).

Scheme 277

Turn belt tensioner (1) in direction of arrow until bore is flush on housing.

Secure belt tensioner in place with special tool 11 3 340 .

Scheme 278

Remove drive belt (1).

Installation note

Mark the direction of rotation of the drive belt if it is to be reused.

Pretension tensioning pulley (1) in direction of arrow.

Remove special tool 11 3 340 .

Scheme 279

Installation note

Note arrangement of drive belt

Arrow shows the direction of rotation.

Scheme 280

Assemble engine.

Installation note

Risk of damage!

Check that drive belt is in correct installation position.

11 28 020 Replacing tensioning device for alternator drive belt (N54, N54T)

Necessary preliminary tasks

1. Remove «DRIVE BELT»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-28-010-replacing-drive-belt)

Remove protective cap on deflection pulley.

Remove special tool 11 3 340 .

Release screw (1) on belt tensioner.

Tightening torque 11 28 1AZ .

Scheme 281

Arrangement and direction of rotation of drive belt.

Assemble engine.

11 31 505 Adjusting camshaft timing (N54, N54T)

Necessary preliminary tasks

1. Remove «CYLINDER HEAD COVER»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-12-000-removing-and-installingsealing)

Remove fastener (1) in direction of arrow.

Installation note

Install fastener (1) with bore facing outwards.

Scheme 282

Rotate crankshaft at central bolt into TDC position.

Slide in special tool 11 0 300 in direction of arrow and block crankshaft.

Scheme 283

If the flywheel is secured in the correct bore with special tool 11 0 300 , the engine can no longer be moved at the central bolt.

Fit special tool 11 4 283 with screws (1).

Fit special tool 11 4 281 on special tool 11 4 283.

Scheme 284

With cylinder No. 1 in ignition TDC position, cams of exhaust camshaft (2) and intake camshaft (1) at 6th cylinder point downwards at an angle.

Note. If the timing is adjusted while the engine is installed, the position of the camshaft can only be checked with a mirror.

Scheme 285

Release central bolt (1) of exhaust camshaft.

Installation note

Replace screw (1).

Tightening torque 11 36 1AZ .

Release central bolt (2) of inlet camshaft.

Installation note

Replace screw (2).

Scheme 286

Tightening torque 11 36 1AZ .

Rotate increment wheels until retaining pins on special tool 11 8 520 match up.

Push special tool 11 8 520 onto cylinder head.

Secure special tool 11 8 520 with bolts (1 and 2).

Note. Bolts M6 x 45 (1 and 2) with captive washer.

Scheme 287

REMOVE CHAIN TENSIONER (1).

Screw special tool 11 9 340 into cylinder head.

Pre-tension timing chain with special tool 00 9 250 to 0.6 Nm.

Tighten central bolts (2 and 3) with special tool 00 9 120 .

Tightening torque 11 36 1AZ .

Scheme 288

Remove all special tools.

Assemble engine.

11 31 005 Checking camshaft timing (N54, N54T)

Necessary preliminary tasks

1. Remove «CYLINDER HEAD COVER»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-12-000-removing-and-installingsealing)
2. Remove front «UNDERBODY PROTECTION»(ref-381258-S36346312162010122800000)

Remove fastener (1) in direction of arrow.

Installation note

Install fastener (1) with bore facing outwards.

Scheme 289

Rotate crankshaft at central bolt into TDC position.

Slide in special tool 11 0 300 in direction of arrow and block crankshaft.

If the flywheel is secured in the correct bore with special tool 11 0 300 , the engine can no longer be moved at the central bolt.

With 1st cylinder in ignition TDC position, cams of intake camshaft (1) at 6th cylinder point downwards at an angle.

With 1st cylinder in ignition TDC position, cams of exhaust camshaft (2) at 6th cylinder point downwards at an angle.

Roller cam follower is not actuated.

Note. If the timing is checked while the engine is installed, the position of the camshaft can only be checked with a mirror.

Secure special tool 11 4 283 on cylinder head with screws (1).

Mount special tool 11 4 281 on intake and exhaust camshafts.

If the special tools 11 4 281 cannot be attached, the TIMING must be adjusted.

Remove all special tools.

Assemble engine.

11 31 090 Installing and removing/replacing chain tensioner piston (N54, N54T)

Necessary preliminary tasks

Remove COOLANT EXPANSION TANK (E89 only)

Release chain tensioner (1).

Tightening torque: 11 31 5AZ .

Scheme 290

Installation note

No sealing ring is fitted during series-production assembly.

A sealing ring must be fitted by service personnel when the chain tensioner is fitted.

If the chain tensioner is reused, its oil chamber must be drained. Place chain tensioner on a level working surface and slowly compress.

Repeat procedure twice.

Scheme 291

Assemble engine.

11 31 028 Removing and installing/replacing exhaust camshaft (N54/N54T)

Necessary preliminary tasks

1. Remove «CYLINDER HEAD COVER»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-12-000-removing-and-installingsealing)
2. Remove «EXHAUST ADJUSTING UNIT»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-36-046-removing-and-installingreplacing) for exhaust camshaft.
3. Adjust «VALVE TIMING»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-31-505-adjusting-camshaft-timing)

Release bearing cap screw connections from outside inwards.

Lift out lower and upper bearing strips (1) with camshaft.

Note. Graphic shows N52.

Scheme 292

A Exhaust camshaft.

E Intake camshaft

Scheme 293

Plain compression rings (1) are engaged at joint.

Press plain compression rings (1) apart upwards and downwards and removed towards front.

Scheme 294

Installation note

Before installing the exhaust camshaft, make sure the roller cam follower is correctly seated on the hydraulic valve clearance compensating element and the valve.

Scheme 295

Installing camshaft bearing strip

Pre-install special tool 11 8 551 on cylinder no. 2.

Observe markings E and A

E: Intake side

A: Exhaust side

Insert special tool 11 8 552 in screw connection of cylinder head cover.

Press down roller cam follower (1) on cylinder no. 2 with spindle nut of special tool 11 8 551.

Scheme 296

Lay lower bearing strip (1) on cylinder head.

Installation note

Lubricate all bearing points with engine oil.

Scheme 297

Insert exhaust camshaft (1) in lower bearing strip.

Installation note

Lubricate all bearing positions and cams with engine oil.

Scheme 298

Installation position (1) of exhaust camshaft (2) at cylinder no. 1.

Scheme 299

Join exhaust camshaft to lower and upper bearing strips with torque wrench from inside outwards to 8 Nm.

Release all screws of bearing strip (1) from outside inwards by 90°.

Check position of exhaust camshaft (2) at cylinder no. 6.

Roller cam follower (1) is not actuated.

Scheme 300

Installation note

Lower and upper bearing strips must be aligned to each other at ground surfaces (1 and 2).

Bring thrust piece and legs of special tools 11 8 553 into contact at milled surfaces.

Scheme 301

Note. Schematic depiction of special tool 11 8 553 at upper bearing strip (1) and lower bearing strip (2).

Scheme 302

Position special tool 11 8 553 over screw connection of bearing strips.

Note. Make sure that legs come into exact contact on ground surfaces, lower bearing strip (1) and upper bearing strip (2).

Scheme 303

Initially tighten screw of special tool 11 8 553 to ground surfaces of lower bearing strip (2) and upper bearing strip (1).

Scheme 304

Pre-tension all special tools 11 8 553 with special tool 11 4 350 only.

Scheme 305

Mount special tools 11 8 553 with screw (1) to inside of cylinder head.

On cylinder no. 2 mount special tool 11 8 553 with screw (1) facing outwards.

Position special tools 11 4 350 so that screw connections (2) of bearing strip are easily accessible.

Scheme 306

Tighten lower and upper bearing strips with special tool 00 9 120 .

Position special tool 11 8 553 over screw connection of bearing strips.

Tightening torque 11 31 1AZ .

Scheme 307

Assemble engine.

11 31 025 Removing and installing/replacing intake camshaft (N54/N54T)

Necessary preliminary tasks

Remove CYLINDER HEAD COVER

1. Remove «INTAKE ADJUSTER»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-36-046-removing-and-installingreplacing) of intake camshaft

Release bearing cap screw connections from outside inwards.

Lift out lower and upper bearing strips (1) with camshaft.

Note. Graphic shows N52.

Remove upper bearing shell.

Remove intake camshaft (1) marked with (E).

Scheme 308

Mixing up the two camshafts will result in engine damage.

A Exhaust camshaft

E Intake camshaft

Plain rectangular compression rings (1) are engaged at joint.

Press plain compression rings (1) apart upwards and downwards and removed towards front.

Scheme 309

Installing camshaft bearing strip

Pre-install special tool 11 8 551 on cylinder nos. 2 and 3.

Insert special tool 11 8 552 in screw connection of cylinder head cover.

Special tool 11 8 551 is marked with letters E and A.

E= Intake side

A= Exhaust side

Press down roller cam follower on cylinder no. 3 with spindle nut (2) of special tool 11 8 551.

Installation note

Before installing intake camshaft, make sure roller cam follower is correctly seated on hydraulic valve clearance compensating element and valve.

Installation note

Pre-install bearing strip of intake camshaft.

Lubricate all bearing points in lower bearing strip with engine oil.

Installation note

Lay intake camshaft (1) in bearing strip.

Rotate intake camshaft (1) at cylinder no. 1 into position (2).

Scheme 310

Installation note

Lower and upper bearing strips must be aligned to each other at ground surfaces (1 and 2).

Bring thrust piece and legs of special tools 11 8 553 into contact at milled surfaces.

Note. Schematic depiction of special tool 11 8 553 at lower bearing strip (1) and upper bearing strip (2).

Position special tool 11 8 553 over screw connection of bearing strips.

Make sure that legs come into exact contact on ground surfaces, lower bearing strip (1) and upper bearing strip (2).

Initially tighten screw of special tool 11 8 553 to ground surfaces of lower bearing strip (1) and upper bearing strip (2).

Install upper and lower bearing strips (1).

Pre-install all special tools 11 8 553.

Scheme 311

Install intake camshaft with bearing strips (1) on cylinder head.

Scheme 312

Check position of intake camshaft (1) at cylinder no. 6.

Roller cam follower (2) is not actuated.

Scheme 313

Tighten lower and upper bearing strips with special tool 00 9 120 .

Tightening torque 11 31 1AZ .

Scheme 314

Adjust VALVE TIMING .

Assemble engine.

11 31 051 Replacing timing chain (N54, N54T)

Necessary preliminary tasks

1. Remove «FAN COWL»(/bmw/z4/e89-2009-2013/remont/cooling-system-mechanical/#cooling-system-repair-n54__17-11-035-removing-and-installingreplacing)
2. Remove «CYLINDER HEAD COVER»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-12-000-removing-and-installingsealing)
3. Remove all spark plugs
4. Remove «CHAIN TENSIONER»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-31-090-installing-and-removingreplacing) .
5. Remove «CRANKSHAFT SEAL»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-14-005-replacing-front-crankshaft) at front
6. Remove «BELT TENSIONER»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-28-020-replacing-tensioning-device)
7. Remove «VIBRATION DAMPER»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-23-010-removing-and-installingreplacing)
8. Remove «INTAKE AND EXHAUST ADJUSTERS»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-36-046-removing-and-installingreplacing)

Remove fastener (1) in direction of arrow.

Installation note

Install fastener (1) with bore facing outwards.

Secure engine in TDC firing position of cylinder no. 1 with special tool 11 0 300 .

Mark flywheel and transmission housing with a line (1).

Note. Graphic shows automatic transmission.

Scheme 315

Do not remove special tool 11 4 280 .

Procedure, transmission removed

Secure flywheel (crankshaft) with special tool 11 9 260 .

Scheme 316

Block flywheel (crankshaft) with special tool 11 8 660 on gearbox.

Scheme 317

Fit special tool 11 8 180 with screws (1).

Secure flywheel in direction of arrow.

Scheme 318

Release central bolt with a 3/4" socket (1) and if necessary with a 3/4" extension (2).

Tightening torque 11 21 1AZ .

Remove central bolt with hub towards front.

Scheme 319

Open plug (1).

Tightening torque 11 31 6AZ .

Scheme 320

Open plug (1).

Tightening torque 11 31 6AZ .

Scheme 321

Release screw (1) on chain drive at top.

Tightening torque 11 31 2AZ .

Scheme 322

Release screw (1) on chain drive at bottom.

Tightening torque 11 31 3AZ .

Scheme 323

Release screws (1).

Tightening torque 11 31 2AZ .

Remove timing chain module with timing chain and sprocket upwards in direction of arrow.

Scheme 324

Scheme 325

Pull timing chain (1) upwards until sprocket (2) engages chain guide (3).

Install timing chain (1) and sprocket (2) in this position.

Installation note

Always hold timing chain under tension.

Timing chain (1) may jam on chain module (3).

Scheme 326

Friction plates (1 and 2) are clipped into place on sprocket wheel/oil pump module.

Scheme 327

Make sure friction plate (3) is in correct installation position.

Scheme 328

Push on friction plate (1) without retainers.

Scheme 329

Insert chain module from above and secure with bolt (1).

Make sure gear wheels (2) are in correct installation position.

Insert hub (3) with friction plate.

Tightening torque 11 21 1AZ .

Scheme 330

Secure special tool 00 9 140 with magnet to engine support (1).

Scheme 331

Secure central bolt with special tool 00 9 140 .

Scheme 332

Remove CRANKSHAFT SEAL at front

Install INTAKE AND EXHAUST ADJUSTERS .

Install CHAIN TENSIONER .

Crank engine twice.

Check TIMING .

Assemble engine.

11 33 050 Removing and installing or replacing all rocker arms (N54, N54T)

Necessary preliminary tasks

1. Remove «CYLINDER HEAD COVER»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-12-000-removing-and-installingsealing)
2. Remove «INTAKE CAMSHAFT»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-31-025-removing-and-installingreplacing)
3. Remove «EXHAUST CAMSHAFT»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-31-028-removing-and-installingreplacing) .

Detach roller cam followers (1) from hydraulic valve clearance compensating element and remove.

Set down roller cam followers in tidy and orderly fashion; if necessary, set down in special tool 11 4 480 .

Installation note

Before installing exhaust and inlet camshafts, make sure roller cam followers are correctly seated.

Remove hydraulic valve clearance compensating element in direction of arrow.

Installation note

If the hydraulic valve clearance compensating elements are reused, they must be placed together with the roller cam followers in neat order if necessary in special tool 11 4 480 .

Scheme 333

Assemble engine.

11 34 552 Removing and installing or replacing all valves (N54, N54T)

Necessary preliminary tasks

1. Remove «CYLINDER HEAD»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-12-100-removing-and-installing) .
2. Remove «INTAKE CAMSHAFT»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-31-025-removing-and-installingreplacing) .
3. Remove «EXHAUST CAMSHAFT»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-31-028-removing-and-installingreplacing) .
4. Remove «ROLLER CAM FOLLOWER»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-33-050-removing-and-installing) .
5. Remove «VALVE SPRINGS»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-34-715-replacing-all-valve) .
6. Remove «VALVE STEM SEALS»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-34-560-replacing-all-valve) .

Arrangement

1. Valve
2. Valve stem seal with spring plate, bottom
3. Valve spring
4. Top plate spring
5. Valve keys

If the valves are to be reused, set them down in special tool 11 4 480 in a tidy and orderly fashion.

Scheme 334

Assemble engine.

Check function of DME.

11 34 715 Replacing all valve springs (N54, N54T)

Necessary preliminary tasks

1. Remove cylinder head cover
2. Remove «CYLINDER HEAD»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-12-100-removing-and-installing) .
3. Remove «EXHAUST CAMSHAFT»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-31-028-removing-and-installingreplacing) .
4. Remove «INTAKE CAMSHAFT»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-31-025-removing-and-installingreplacing)
5. Remove «ROLLER CAM FOLLOWERS»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-33-050-removing-and-installing)

Intake valves

Fit cylinder head on special tool 11 9 000 .

Press valve spring down on spring cup with special tools 11 0 009 and 11 9 017.

Scheme 335

Exhaust valves

Fit cylinder head on special tool 11 9 000 .

Press valve spring down on spring cup with special tools 11 0 009 and 11 0 346.

Scheme 336

Remove valve tapers with a magnet.

Remove valve spring and spring retainer.

Set down on special tool 11 4 480 in a tidy and orderly fashion.

Scheme 337

Color marking (1) is normally on lower end of valve spring.

Installation note

Inlet valve: Violet/green or violet/yellow

Exhaust: White/green or white/yellow

If the colors on the valve springs can no longer be identified, these must be replaced for safety reasons.

Scheme 338

Arrangement

1. Valve
2. Valve stem seal with spring plate, bottom
3. Valve spring
4. Top plate spring
5. Valve keys

Assemble engine.

Check function of DME control unit.

11 34 560 Replacing all valve stem seals (N54, N54T)

Necessary preliminary tasks

1. Remove «CYLINDER HEAD»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-12-100-removing-and-installing) .
2. Remove «INTAKE CAMSHAFT»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-31-025-removing-and-installingreplacing) .
3. Remove «EXHAUST CAMSHAFT»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-31-028-removing-and-installingreplacing) .
4. Remove «ROLLER CAM FOLLOWER»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-33-050-removing-and-installing) .
5. Remove all «VALVE SPRINGS»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-34-715-replacing-all-valve) .

Firmly press special tool 11 1 480 onto old valve stem seals.

Detach valve stem seal from valve stem by turning and simultaneously pulling special tool 11 1 480 .

Installation note

Insert all VALVES .

Scheme 339

Note. For use on the N54 engine, special tool 11 6 380 must be remachined according to the sketch with a 10 mm drill bit dia. to a depth of B = approx. 23 mm. This modification has already been taken into account for reordering.

Scheme 340

Valve dia. 5 mm: valve stem seal is red or brown.

Valve dia. 6 mm: valve stem seal is green or light green.

Scheme 341

Installation note

Fit the mounting sleeves (plastic sleeves) supplied in the spare part on the valve stem end

Lubricate mounting sleeve.

Press on valve stem seal with special tool 11 6 380 by hand up to stop.

Note. Graphic shows N46.

Scheme 342

Assemble engine.

11 36 655 Removing and installing/replacing both solenoid valves (N54, N54T)

1. Rough running
2. OBD incorrect entry
3. Poor exhaust gas values
4. Low engine power

Necessary preliminary tasks

1. Read out fault memory in DME control unit
2. Switch off ignition
3. Remove «FAN COWL»(/bmw/z4/e89-2009-2013/remont/cooling-system-mechanical/#cooling-system-repair-n54__17-11-035-removing-and-installingreplacing)

Note. Carefully press coolant hose and pressure line (not shown) to one side.

Note. Solenoid valve (2) controls the intake adjuster. Solenoid valve (3) controls the exhaust adjuster.

Disconnect plug connections (1 and 4).

Installation note

Do not mix up plug connections (1 and 4) of solenoid valves.

Scheme 343

Plug connections (1 and 4) must snap audibly into place!

Unfasten screws (3 and 4).

Tightening torque 11 36 3AZ .

Carefully pull out solenoid valves (1 and 2).

Scheme 344

Installation note

Replace sealing ring (1) on solenoid valve (2).

Note. Moisten sealing ring (1) with engine oil.

Avoid damaging, e.g. notches or scratches, the solenoid valve (2).

Scheme 345

Carefully insert solenoid valves (1 and 2) up to stop.

Ensure correct installation position.

Insert screws (3 and 4) and tighten down.

Tightening torque 11 36 3AZ .

Assemble engine.

Delete fault memory.

Check function of DME control unit.

11 36 046 Removing and installing/replacing intake and exhaust camshaft adjusters (N54, N54T)

Necessary preliminary tasks

1. Remove cylinder head cover

Remove fastener (1) in direction of arrow.

Scheme 346

Slide in special tool 11 0 300 in direction of arrow.

Rotate flywheel (1) at central bolt until firing TDC position at cylinder no. 1 is reached.

With cylinder No. 1 in ignition TDC position, intake camshaft (1) at 6th cylinder points downwards at an angle to the left.

With cylinder No. 1 in ignition TDC position, exhaust camshaft (2) at 6th cylinder points downwards at an angle to the right.

Installation note

If the timing is checked while the engine is installed, this is only possible with a mirror.

Fit special tool 11 4 283 with screws (1).

Fit special tool 11 4 281 on special tool 11 4 283.

Release central bolt of exhaust camshaft adjuster (1).

Release central bolt of intake camshaft adjuster (2).

Tightening torque 11 36 1AZ .

Release CHAIN TENSIONER .

Detach exhaust camshaft adjuster (1) from exhaust camshaft.

Detach intake camshaft adjuster (2) from intake camshaft.

Installation note

To facilitate removal and installation of the intake and exhaust adjusters, turn the increment wheels at the aperture downwards.

Scheme 347

The intake and exhaust camshaft adjusters are different.

The variable camshaft timing control is marked with AUS and EX for the exhaust camshaft.

The variable camshaft timing control is marked with EIN and IN for the intake camshaft.

The increment wheels can be fitted alternatively.

Scheme 348

Position intake and exhaust adjusters on camshafts.

Installation position of intake and exhaust adjusters can be freely selected.

Installation note

Replace screws (1 and 2).

Insert screws (1 and 2).

Adjust VALVE TIMING .

Fit CHAIN TENSIONER .

Make sure that timing chain is guided in tensioning rail (1).

Note. Schematic representation on removed chain drive.

Scheme 349

Remove all special tools.

Assemble engine.

11 40 000 Checking engine oil pressure (N54, N54T)

Necessary preliminary tasks

1. Remove front «IGNITION COIL COVER»(/bmw/z4/e89-2009-2013/remont/oem-general-information/#maintenance-and-general-information-repair-n54__11-removing-and-installingreplacing-acoustic-cover)

Disconnect plug connection (1) on oil pressure switch.

Installation note

Plug connection (1) must snap audibly into place!

Remove oil pressure switch (2).

Tightening torque 12 61 1AZ .

Scheme 350

Screw in special tool 11 4 050 with sealing ring (1).

Scheme 351

Checking engine oil pressure with BMW diagnosis system

Connect special tools 13 6 054 and 13 6 051.

Checking engine oil pressure with pressure gauge

Connect special tools 13 3 063 and 13 3 061.

Start engine and check engine oil pressure.

Compare actual values with prescribed SETPOINT VALUES .

Scheme 352

Assemble engine.

11 41 000 Removing and installing oil pump (N54, N54T)

Necessary preliminary tasks

1. Remove «OIL SUMP»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-13-000-removing-and-installing)

Release screws (1).

Tightening torque 11 41 1AZ .

Installation note

Replace aluminum screws

Remove intake pipe (2) in direction of arrow.

Secure oil pump drive gear with special tool 11 0 300 to oil pump.

Tightening torque 11 41 4AZ .

Scheme 353

Unfasten screws (2).

Tightening torque 11 41 3AZ .

Release screws (1).

Tightening torque 11 41 2AZ .

Installation note

Replace aluminum screws

Pull of drive gear (1) in direction of arrow.

Note. The chain tensioner pushes the timing chain (3) of the triangular drive upward. Do not remove drive gear.

Remove oil pump (2) in direction of arrow.

Installation note

Check spacer bushes (1) for damage and firm seating.

Replace spacer bushes (1) if necessary

Align mounting flats (3) on oil pump (2) to drive gear.

Install oil pump (2).

Assemble engine.

11 66 000 Removing and installing or replacing vacuum/oil pump (N47 D20 O1)

Necessary preliminary work

1. Removing oil sump.

Release screws (1).

Remove intake snorkel in direction of arrow.

Scheme 354

Release screw (1).

Scheme 355

Release screws (1).

Installation note

Clean and blow out thread

Scheme 356

Release screws (1).

When installed, the oil pump chain must be fed out from the sprocket wheel of the oil pump drive gear; the sprocket wheel cannot be removed.

Note. Illustration shows gear case cover removed.

Scheme 357

Oil vacuum pump must be fed out at chain drive (1).

Scheme 358

Feed out oil vacuum pump (1) in direction of arrow and remove.

Installation in reverse sequence.

Installation note

Clean all sealing surfaces.

Scheme 359

Install all screws (1) and tighten down.

Tightening torque: 11 41 1AZ .

Install and tighten down screws (1).

Installation note

Clean and blow out thread

Insert and secure screw (1).

Secure screw (1) with special tool 00 9 120 .

Tightening torque: 11 41 2AZ .

Assemble engine.

11 41 010 Removing and installing/replacing chain module for oil pump/vacuum pump (N54, N54T)

Necessary preliminary tasks

1. Remove «CYLINDER HEAD COVER»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-12-000-removing-and-installingsealing)
2. Remove «OIL SUMP»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-13-000-removing-and-installing)
3. Remove «DRIVE BELT»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-28-010-replacing-drive-belt)
4. Remove drive belt «TENSIONER»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-28-020-replacing-tensioning-device)
5. Remove «VIBRATION DAMPER»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-23-010-removing-and-installingreplacing)
6. Remove vacuum pump «SEALING CAP»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-14-010-replacing-sealing-cap)
7. Remove «CHAIN TENSIONER»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-31-090-installing-and-removingreplacing) .

Turn sprocket (3) at central bolt (crankshaft) into position.

Screw special tool 11 8 650 into crankcase.

Position special tool 11 0 290 on sprocket

and on special tool 11 8 650 .

Release screw (1).

Tightening torque 11 66 2AZ .

Scheme 360

Press timing chain with chain tensioner (1) in direction of arrow.

Secure chain module with special tool 11 4 120 in hole (2).

Feed out sprocket (3) at hexagon head (4) of vacuum pump.

Installation note

A lock pin is pre-installed if the triangular drive is replaced.

Scheme 361

Unfasten screws (2).

Tightening torque 11 41 3AZ .

Note. Sprocket must be blocked in order to release central bolt (2). Insert pin (1) with 6 mm dia. between sprocket and housing of oil pump.

Release oil pump central bolt (2).

Tightening torque 11 41 5AZ .

Scheme 362

Secure CRANKSHAFT AND CAMSHAFT .

Do not remove special tools 11 0 300 and 11 4 280 .

Fit special tool 11 9 280.

Release central screw (1).

Note. A 3/4 inch tool is needed to release the central bolt.

A second person is required.

Scheme 363

Remove hub (2) towards front.

Installation note

Replace front CRANKSHAFT SEAL .

Scheme 364

Open screw plug on bedplate.

Installation note

Replace seal.

Release screw (1) with special tool 11 8 640 on triangular drive.

Tightening torque 11 41 3AZ .

Installation note

Replace aluminum screws.

Scheme 365

Remove triangular drive (1) in direction of arrow.

Scheme 366

Collar on sprocket (2) points to timing chain drive.

Incorrect assembly will result in engine damage.

Friction plates (1 and 2) must be clipped into place on the oil pump module sprocket.

The third friction plate is attached to the crankshaft hub.

Feed in oil pump chain module.

Secure oil pump chain module with screws (2).

Tightening torque 11 41 3AZ .

Secure screw (1) with special tool 11 8 640 .

Tightening torque 11 41 3AZ .

Installation note

Check both friction plates (3) with retainers for correct installation position.

Push on friction plate (1) without retainers.

Fit central bolt (1).

Scheme 367

Insert special tools 11 8 650 and 11 0 290 .

Tighten bolt (1).

Tightening torque 11 66 2AZ .

Install special tool 11 0 300 .

Tighten bolt (2).

Tightening torque 11 41 4AZ .

Tighten down special tool 11 5 200 with screws (1) to hub.

Do not remove special tools 11 0 300 and 11 4 280 .

Scheme 368

Tighten central bolt to jointing torque.

Tightening torque 11 21 1AZ .

Mark torsion angle tightening on tool with stroke of paint (1).

See graphic.

Scheme 369

Installation note

Replace front CRANKSHAFT SEAL .

Assemble engine.

11 42 198 Removing and installing oil feed line for exhaust turbocharger (N54)

Remove exhaust turbocharger.

Release screw (2). Tightening torque 11 42 9AZ.

Important! Where necessary, to release the oil feed line (3), do not place pliers on the pipe. Risk of damage!

Scheme 370

If necessary, release oil feed line (3) with suitable pliers at connection and remove.

Installation note: Replace O-rings.

Assemble engine.

11 42 250 Removing and installing oil return line for exhaust turbocharger (N54)

Remove both catalytic converters.

Remove right engine support arm.

Undo screws (1 and 2)

Scheme 371

Tightening torque 11 42 7AZ. .

Remove oil return line in direction of arrow.

Installation note: Renew O-rings and gaskets.

Assemble engine.

11 42 248 Removing and installing/renewing the oil return line for exhaust turbocharger cyl. 1-3 (N54)

Necessary preliminary tasks

1. Partially release the track rod end on the right.
2. Partially release the holder on the steering gear.
3. Disconnect the plug connection at the coolant pump.
4. Remove heat shield.
5. Remove coolant hose from coolant pump.

Release screws (1 and 2).

Scheme 372

Tightening torque: 11 42 7AZ.

Remove oil return line in direction of arrow.

Installation note: Renew O-rings and gaskets.

Assemble engine.

11 42 020 Removing and installing/replacing full-flow oil filter (N54, N54T)

Necessary preliminary tasks

1. Remove «INTAKE PLENUM»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-61-050-removing-and-installing)
2. Drain «COOLANT»(/bmw/z4/e89-2009-2013/remont/cooling-system-mechanical/#cooling-system-repair-n54__17-00-008-draining-and-adding)
3. Unlock coolant hose and detach
4. Remove «OIL-TO-WATER HEAT EXCHANGER»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-44-000-removing-and-installingreplacing)

Release oil filter cover with special tool 11 9 240 . Tightening torque 11 42 1AZ .

Note. Engine oil flows out of the oil filter housing and back into the oil sump.

Installation note

Replace sealing rings on oil filter cover.

Moisten sealing rings with engine oil.

Scheme 373

Release screws (1).

Release screw (2).

Note. Have cleaning cloth ready to catch residual oil.

Tightening torque: 11 42 2AZ.

Installation note

Replace all seals.

If necessary, replace filter element.

Modify oil pressure switch when replacing.

Scheme 374

Assemble engine.

11 42 035 Removing and installing/replacing thermostat housing (N54, N54T)

Necessary preliminary tasks

1. Drain «COOLANT»(/bmw/z4/e89-2009-2013/remont/cooling-system-mechanical/#cooling-system-repair-n54__17-00-008-draining-and-adding) t.
2. Remove «FAN COWL»(/bmw/z4/e89-2009-2013/remont/cooling-system-mechanical/#cooling-system-repair-n54__17-11-035-removing-and-installingreplacing) .

Release screw (1). Tightening torque 11 42 3AZ . Pull engine oil pipe down off the thermostat housing. Installation note: Replace O-rings.

Scheme 375

Release screws (1) on thermostat housing. Remove oil-coolant heat exchanger towards front. Picture shows E9x Installation note: Replace gasket.

Scheme 376

Reassemble vehicle and set in horizontal position. Vent COOLING SYSTEM and check for water leaks. Start engine and run at idle until oil pressure warning lamp goes out. Turn off engine. Wait approx. 5 minutes and check oil level. Top up engine oil if necessary.

11 44 000 Removing and installing/replacing oil-to-water heat exchanger (N54, N54T)

Necessary preliminary tasks

1. Drain «COOLANT»(/bmw/z4/e89-2009-2013/remont/cooling-system-mechanical/#cooling-system-repair-n54__17-00-008-draining-and-adding)
2. Remove «FAN COWL»(/bmw/z4/e89-2009-2013/remont/cooling-system-mechanical/#cooling-system-repair-n54__17-11-035-removing-and-installingreplacing)

Release screw (1).

Tightening torque 11 42 3AZ .

Do not detach engine oil pipe from oil-to-water heat exchanger in downward direction.

Installation note

Replace O-rings.

Release bolts (1) on oil-coolant heat exchanger.

Remove oil-coolant heat exchanger towards front.

Picture shows E9x

Installation note

Replace seal.

Scheme 377

Reassemble car and set in horizontal position.

Vent COOLING SYSTEM and check for water leaks.

Start engine and run at idle until oil pressure warning lamp goes out.

Turn off engine.

Wait approx. 5 minutes and check oil level.

Top up engine oil if necessary.

11 51 000 Removing and installing/renewing coolant pump (N54, N54T)

Recycling

Catch and dispose of drained coolant in a suitable container.

Observe country-specific waste disposal regulations.

Necessary preliminary tasks

1. Remove «COOLANT THERMOSTAT»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-53-000-removing-and-installingreplacing)
2. Remove «RIGHT DIAGONAL STRUT»(ref-381258-S01404793622010122800000)

Release coolant hose (1).

Release coolant hose (3).

Disconnect plug connection (2).

Release screws (5).

Installation note

Replace aluminum screws.

Tightening torque 11 51 1AZ .

Installation note

If a coolant pump is reused, it must be mechanically rotated once (breakaway torque at pump gears).

Scheme 378

One coolant pump rotation will be sufficient.

Assemble engine.

VENTING INSTRUCTIONS must be observed without fail.

11 53 000 Removing and installing/replacing coolant thermostat (N54, N54T)

Recycling

Catch and dispose of drained coolant in a suitable collecting vessel.

Observe country-specific waste disposal regulations.

Protect plug connections against coolant and dirt contamination.

Cover plug connections with suitable materials.

Necessary preliminary work

1. Remove «FAN COWL»(/bmw/z4/e89-2009-2013/remont/cooling-system-mechanical/#cooling-system-repair-n54__17-11-035-removing-and-installingreplacing) .
2. Remove front «UNDERBODY PROTECTION»(ref-381258-S36346312162010122800000)
3. Release «FRONT STABILIZER»(/bmw/z4/e89-2009-2013/remont/axle-shafts/#front-axle-repair__31-35-000-removing-and-installingreplacing) on front axle.

Release screws (1) (only on front axle support)

Tightening torque 17 10 5AZ .

Scheme 379

Note. Illustration shows coolant thermostat removed.

Disconnect coolant hoses (arrows) on the thermostat (1) with clamping tongs.

Scheme 380

Release hose clamp (1) and detach coolant hose.

Release hose clamp (2) and detach coolant hose.

Unlock and detach coolant hose (3).

Unlock and detach coolant hose (4).

Disconnect plug connection (5).

Release screws (6).

Tightening torque 11 53 1AZ .

Scheme 381

Assemble engine.

Fill the COOLING SYSTEM .

Check function of cooling system.

11 53 740 Removing and installing/replacing feed line (N54, N54T)

Recycling

Catch and dispose of drained coolant in a suitable container.

Observe country-specific waste disposal regulations.

Necessary preliminary tasks

1. Drain «COOLANT»(/bmw/z4/e89-2009-2013/remont/cooling-system-mechanical/#cooling-system-repair-n54__17-00-008-draining-and-adding)
2. Remove both catalytic exhaust-gas converters. See «1832050 REMOVING AND INSTALLING/REPLACING CATALYTIC EXHAUST-GAS CONVERTER FOR CYLINDERS 1-3 (N54)»(/bmw/z4/e89-2009-2013/remont/exhaust/#exhaust-system-repair-n54__18-32-050-removing-and-installingreplacing) or «1832060 REMOVING AND INSTALLING/REPLACING CATALYTIC EXHAUST-GAS CONVERTER FOR CYLINDERS 4-6 (N54)»(/bmw/z4/e89-2009-2013/remont/exhaust/#exhaust-system-repair-n54__18-32-060-removing-and-installingreplacing) .

Unfasten hose clip (1).

Tightening torque 11 51 4AZ .

Detach coolant hose of feed line in direction of arrow from coolant pump (2).

Scheme 382

Release screws (1 and 2).

Tightening torque 11 53 10AZ .

If necessary, release coolant feed lines (3 and 4) with suitable pliers at connection.

Installation note

Replace O-rings.

Scheme 383

Note. For purposes of clarity, the graphic shows the released coolant feed lines removed.

Release screws (1).

Tightening torque 11 53 3AZ .

Remove feed line (2).

Installation note

Replace seal.

Scheme 384

Assemble engine.

Top up COOLANT .

BLEEDING INSTRUCTIONS must be observed without fail.

11 61 365 Removing and installing/replacing left charge air duct (N54, N54T)

Necessary preliminary tasks

1. Remove «FAN COWL»(/bmw/z4/e89-2009-2013/remont/cooling-system-mechanical/#cooling-system-repair-n54__17-11-035-removing-and-installingreplacing)
2. Remove front «UNDERBODY PROTECTION»(ref-381258-S36346312162010122800000)
3. Remove «INTAKE SILENCER HOUSING»(/bmw/z4/e89-2009-2013/remont/fuel-system/#fuel-system-repair-n54__13-71-000-removing-and-installingreplacing)

Unlock quick-connect coupling.

Detach charge air duct (1) from charge air cooler (2).

Installation note

1. Coat sealing rings of snap fasteners with lubricant.
2. Pressure pipes must audibly snap into place.

Scheme 385

Release quick-connect couplings (1) by turning lock through 90°.

Detach recirculated-air hoses (2) and lay to one side.

Disconnect plug connection (3).

Unlock quick-connect coupling (5) and detach charge air duct (6) from throttle valve actuator.

Pull charge air duct (6) out of rubber grommet (4) and remove towards top.

Scheme 386

Installation note

Bring lock (1) back 90° into installation position.

Pay attention to markings.

Recirculated-air hoses must snap audibly into place.

Scheme 387

Attach charge air duct (1) with special tool 11 8 670 to charge air cooler (2).

Installation note

Texts refer to and illustrations show the right side.

The procedure is identical for the left side.

Scheme 388

11 61 362 Removing and installing/replacing right charge air duct (N54, N54T)

Necessary preliminary tasks

1. Remove «COOLANT EXPANSION TANK»(/bmw/z4/e89-2009-2013/remont/cooling-system-mechanical/#cooling-system-repair-n54__17-11-100-removing-and-installingreplacing)
2. Remove «UNDERBODY PROTECTION»(ref-381258-S36346312162010122800000)
3. Remove right «TENSION STRUT»(ref-381258-S30910208292010122800000)

Mark vacuum hoses (1) and detach.

Mark vacuum hose (2) and detach.

Unscrew nuts (3).

Release screw (4).

Tightening torque, screw 11 65 6AZ .

Raise bracket slightly.

Mark vacuum hose (5) on underside of pressure accumulator.

Remove vacuum accumulator with bracket.

Scheme 389

Release nuts (1) and screws (2), remove heat shield (3).

Scheme 390

Release clamps (1, 2), detach charge air duct (3).

Scheme 391

Installation note

Faulty O-rings must be replaced.

Prior to fitting, coat O-ring with suitable antiseize agent.

Scheme 392

Unlock and detach coolant hose (1).

Unlock quick-connect coupling.

Detach charge air duct (2) from charge air cooler (3) and remove towards top.

Scheme 393

Special tool 11 8 670 is mandatory.

Attach charge air duct (1) with special tool 11 8 670 to charge air cooler.

Installation note

1. Coat sealing rings of quick-connect couplings with antiseize agent.
2. Pressure pipes must audibly snap into place

Assemble engine.

Check DME (turbocharger) for correct operation.

11 61 050 Removing and installing intake plenum (N54, N54T)

Necessary preliminary tasks

1. Remove «INTAKE FILTER HOUSING»(/bmw/z4/e89-2009-2013/remont/fuel-system/#fuel-system-repair-n54__13-71-000-removing-and-installingreplacing)
2. «REMOVE ENGINE COVER»(/bmw/z4/e89-2009-2013/remont/oem-general-information/#maintenance-and-general-information-repair-n54__11-removing-and-installingreplacing-acoustic-cover)
3. If necessary, remove «TENSION STRUT»(ref-381258-S30910208292010122800000) (risk of damage to charging pressure sensor)
4. Release screws on «CHARGE AIR DUCT»(/bmw/z4/e89-2009-2013/remont/fuel-system/#fuel-system-repair-n54__13-71-170-removing-and-installingreplacing) at rear (do not remove)

Pull off vacuum hose (1).

Detach tank vent valve (2) from mounting.

Release hose (3) and lay to one side.

Scheme 394

Disconnect plug connection (1) on oil pressure switch (2).

Disconnect plug connection (2).

Note. Do not detach fuel line. Unscrew nuts (3). Release screw (4). Tightening torque 11 61 1AZ .

Scheme 395

Raise intake air manifold.

Release screws (1).

Place cable duct (2) to one side.

Scheme 396

Cut cable tie (1).

Installation note

Replace all seals (3).

Scheme 397

Installation note

Replace all seals.

Assemble engine.

11 65 022 Removing and installing/replace exhaust turbocharger for cylinders 1-3 (N54, N54T)

Necessary preliminary tasks

1. Remove both catalytic converters. See «1832050 REMOVING AND INSTALLING/REPLACING CATALYTIC EXHAUST-GAS CONVERTER FOR CYLINDERS 1-3 (N54)»(/bmw/z4/e89-2009-2013/remont/exhaust/#exhaust-system-repair-n54__18-32-050-removing-and-installingreplacing) or «1832060 REMOVING AND INSTALLING/REPLACING CATALYTIC EXHAUST-GAS CONVERTER FOR CYLINDERS 4-6 (N54)»(/bmw/z4/e89-2009-2013/remont/exhaust/#exhaust-system-repair-n54__18-32-060-removing-and-installingreplacing)
2. Release right «TIE ROD»(/bmw/z4/e89-2009-2013/remont/manual-power-steering/#steering-and-wheel-alignment-repair__32-21-231-replacing-removing-and) from steering gear
3. Drain «COOLANT»(/bmw/z4/e89-2009-2013/remont/cooling-system-mechanical/#cooling-system-repair-n54__17-00-008-draining-and-adding)
4. Remove coolant «EXPANSION TANK»(/bmw/z4/e89-2009-2013/remont/cooling-system-mechanical/#cooling-system-repair-n54__17-11-100-removing-and-installingreplacing)
5. Remove «COOLANT THERMOSTAT»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-53-000-removing-and-installingreplacing)
6. Remove «COOLANT PUMP»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-51-000-removing-and-installingrenewing)
7. Remove both vacuum accumulators with bracket
8. Remove right «CHARGE-AIR DUCT»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-61-362-removing-and-installingreplacing)
9. Drain «ENGINE OIL»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-00-engine-oil-service-n54) and collect in a clean container, oil is reused

Release screws (1) and remove protective plate (2) above tie rod.

Scheme 398

Release screws (1).

Tightening torque 11 42 7AZ .

Installation note

Replace gasket.

Release screw (2).

Tightening torque 11 42 8AZ .

Remove oil return pipe in direction of arrow.

Installation note

Replace O-ring.

Undo screws (1 and 2)

Tightening torque 11 53 10AZ .

Release coolant feed lines (3 and 4) if necessary with suitable pliers.

Scheme 399

Release screws (1).

Tightening torque 11 53 3AZ .

Remove feed line (2).

Installation note

Replace O-ring.

Scheme 400

Release screw (1).

Tightening torque 11 53 8AZ .

Release coolant return pipe at connection (2) if necessary with suitable pliers.

Release screw (3).

Tightening torque 11 53 9AZ .

Release coolant return pipe at connection (4) if necessary with suitable pliers.

Unfasten coolant return pipe.

Scheme 401

Release screws (1).

Tightening torque 11 65 2AZ .

Remove retaining plate (2).

Release screws (3).

Tightening torque 11 65 2AZ .

Scheme 402

Remove heat shield (1) in direction of arrow.

Note. Carefully swing out heat shield (1) in direction of arrow. Risk of damage! Coolant feed pipe can be removed with heat shield (1).

Scheme 403

Release screws (1).

Tightening torque 11 65 3AZ .

Set holder (2) down on cylinder head cover.

Scheme 404

Release screw (1).

Tightening torque 11 42 4AZ .

Detach oil feed line in direction of arrow.

Installation note

Replace O-ring.

Scheme 405

Release screw (1).

Tightening torque 11 42 5AZ .

Release oil pressure line (2) if necessary with suitable pliers.

Installation note

Replace O-rings.

Scheme 406

Detach vacuum hose from vacuum unit (wastegate valve).

Unscrew nuts (1).

Tightening torque 11 65 1AZ .

Remove turbocharger towards top.

Scheme 407

Release screw (2).

Tightening torque 11 42 5AZ .

If necessary, release oil feed line (3) with suitable pliers at connection and remove.

Installation note

Replace O-rings.

Installation note

Replace graphite sealing rings (1).

Note. Picture shows turbocharger for cylinders 4 to 6.

Assemble engine.

Delete fault memory in Digital Engine Electronics.

Check air intake system for leaks.

Observe DME instructions.

11 65 024 Removing and installing/replace exhaust turbocharger for cylinders 4-6 (N54, N54T)

Necessary preliminary tasks

1. Remove both catalytic converters. See «1832050 REMOVING AND INSTALLING/REPLACING CATALYTIC EXHAUST-GAS CONVERTER FOR CYLINDERS 1-3 (N54)»(/bmw/z4/e89-2009-2013/remont/exhaust/#exhaust-system-repair-n54__18-32-050-removing-and-installingreplacing) or «1832060 REMOVING AND INSTALLING/REPLACING CATALYTIC EXHAUST-GAS CONVERTER FOR CYLINDERS 4-6 (N54)»(/bmw/z4/e89-2009-2013/remont/exhaust/#exhaust-system-repair-n54__18-32-060-removing-and-installingreplacing)
2. Drain «COOLANT»(/bmw/z4/e89-2009-2013/remont/cooling-system-mechanical/#cooling-system-repair-n54__17-00-008-draining-and-adding)
3. Remove coolant «EXPANSION TANK»(/bmw/z4/e89-2009-2013/remont/cooling-system-mechanical/#cooling-system-repair-n54__17-11-100-removing-and-installingreplacing)
4. Remove both vacuum reservoirs
5. Remove right «CHARGE AIR DUCT»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-61-362-removing-and-installingreplacing)
6. Drain «ENGINE OIL»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-repair-n54__11-00-engine-oil-service-n54) and collect in a clean container, oil is reused
7. Remove «RIGHT ENGINE SUPPORT ARM»(/bmw/z4/e89-2009-2013/remont/mechanical/#engine-and-gearbox-suspension-repair-n54__22-11-100-replacing-right-engine)

Release screws (1).

Tightening torque 11 42 7AZ .

Installation note

Replace gasket.

Release screw (2).

Tightening torque 11 42 8AZ .

Remove oil return pipe in direction of arrow.

Installation note

Replace O-ring.

Release screws (1 and 2).

Tightening torque 11 53 10AZ .

Release coolant feed lines (3 and 4) if necessary with suitable pliers.

Installation note

Replace O-rings.

Release screws (1).

Tightening torque 11 53 3AZ .

Remove feed line (2).

Installation note

Replace O-ring.

Release snap ring (1) from linkage of wastegate valve and disengage linkage.

Release screw (5).

Tightening torque 11 53 9AZ .

Release coolant return pipe if necessary with suitable pliers.

Release screw (4).

Tightening torque 11 53 8AZ .

Release coolant feed pipe (2) if necessary with suitable pliers.

Release coolant return pipe (3) if necessary with suitable pliers and remove.

Scheme 408

Installation note

Replace O-rings.