Engine - Repair Instructions - x5 (4.4l) BMW X5 E53

00 00 249 BMW engine oil service (M60 / M62 / M73)

Change engine oil and oil filter.

Note. Do not damage main flow oil filter cover. Only open and tighten with socket wrench. Unfasten main flow oil filter cover - engine oil now flows back into oil pan.

Installation

Tightening torque, refer to 11 42 2AZ in ENGINE - TIGHTENING TORQUES .

Scheme 1

Remove oil filter from oil filter cover.

Note direction of installation of oil filter insert.

Oil filter insert must locate in oil filter cover.

Scheme 2

Replace sealing ring and coat with oil.

Scheme 3

After draining oil from oil-filter housing, unscrew oil drain plug or draw out oil with a vacuum unit.

Replace sealing ring.

Tightening torque, refer to 11 13 1AZ in ENGINE - TIGHTENING TORQUES .

Scheme 4

Pour in engine oil.

Switch on engine and run at idle until oil indicator lamp goes out.

Stop engine and check oil level.

Note. Position car on a flat, horizontal surface.

11 00 039 Checking compression of all cylinders (M60 / M62 / M73 / S62 / M54)

Special tools required

1. 11 0 224
2. 11 0 226

Preliminary Information

Cut off power supply to ignition coils (disconnect plug connection at DME control unit).

Necessary preliminary tasks

1. Connect charger or a second battery.
2. Read out fault memory of DME control unit
3. Pull fuel pump relay or fuel pump fuse.
4. Start engine and allow residual fuel to drain out (pressure reduction).
5. Remove all spark plugs. «12 12 011 REPLACING ALL SPARK PLUGS»(/bmw/x5/e53-1999-2003/remont/gauges-instrument-panels/#engine-electrical-system-repair-instructions-x5-44l__12-12-011-replacing-all-spark)

Screw special tool 11 0 226 by hand into spark plug thread and connect special tool 11 0 224.

Note. Check that sealing ring is in perfect condition (see arrow).

Scheme 5

Depress accelerator and actuate starter until compression stops rising.

Compression pressure.

Scheme 6

Assemble engine.

Now clear the fault memory.

Scheme 7

1. Connect DIS tester
2. BMW measuring technology
3. Preset measurements
4. Absolute compression The further procedure is described in Help Help on preset measurements Adaptation of "Absolute compression"
5. Clear fault memory

11 00 050 Removing and installing engine (M62)

Instructions for disconnecting and connecting battery

refer to 12 00 ... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .

Disconnect negative battery lead.

Remove heater bulkhead, refer to 51 71 080 REMOVING AND INSTALLING/REPLACING HEATER BULKHEAD .

Lift engine hood into assembly position.

Note. The following work must be carried out with a second person assisting. Work instruction applies to left and right sides. Gently raise retaining clip and simultaneously push upwards. Hold engine hood, unhook damper on hood. Open engine hood fully and reattach damper with special tool 51 2 170 to hood.

Scheme 8

Turn fasteners on acoustic cover 90° counterclockwise, remove acoustic cover.

Scheme 9

Release bellows on throttle. Remove intake filter housing with air-mass flow sensor.

Remove windshield washing reservoir.

Open hose clip (1). Disconnect hose (2) for brake booster from suction jet pump.

Scheme 10

Disconnect fuel feed line from injection pipe and seal hose ends with special tool 13 5 281 and special tool 13 5 282.

Instructions for removing and installing fuel hoses

refer to 13 53 540 REPLACING, SEALING FUEL HOSES .

Remove front splash guard.

Remove reinforcement plate.

Open coolant drain plug on right side of engine block.

Drain and dispose of coolant.

Replace sealing ring.

Tightening torque

see 11 11 5AZ in ENGINE - TIGHTENING TORQUES .

Remove alternator drive belt

refer to 11 28 010 REPLACING ALTERNATOR DRIVE BELT (M62) .

Remove power steering pump.

Note. Lines remain connected.

Evacuate A/C system.

Disconnect lines between A/C compressor and condenser. Disconnect suction line from A/C compressor and tie to one side.

Note. A/C compressor remains on engine.

Remove transmission

refer to appropriate article in TRANSMISSION section.

Remove heat shield from starter motor.

Release cable connections to starter motor.

Remove starter motor.

Detach oil lines to transmission on heat exchanger for transmission and remove.

Remove heat exchanger for transmission from radiator.

Remove radiator

refer to ENGINE RADIATOR .

is connect water hoses on alternator and thermostat housing.

Note. Illustration with engine removed.

Unfasten coolant hoses from coolant manifold.

Scheme 11

Detach coolant hoses (1) from heater.

Scheme 12

Disconnect plug connection (1).

Remove heating valve (2) completely with hoses.

Scheme 13

Press lock (1) and detach hose (2) from tank venting valve.

Scheme 14

Disconnect wiring harness section for engine in control unit box and place on engine.

Remove positive lead from support point and place on engine.

Disconnect wiring harness section for transmission in control unit box.

Pull out wiring harness section for transmission and oxygen sensors and place on engine.

Remove expansion tank

refer to RADIATOR EXPANSION .

Open cap (1), draw off hydraulic fluid from supply reservoir for power steering pump. Dispose of hydraulic fluid.

Observe country-specific waste-disposal regulations.

Refit cap (1).

Detach supply reservoir from carrier.

Note. Lines remain connected.

Scheme 15

Note. Grounding strap (1) is screwed to main flow oil filter housing.

Detach main flow oil filter housing from holder, feed out of carrier and suspend from engine.

Note. Lines remain connected.

Provisionally reinstall supply reservoir for power steering pump.

Scheme 16

Note. The engine leans forward once the swivel bearings and output shafts have been removed. Support engine with a block of wood (1). If necessary, secure wood with a cable tie to front axle support.

Scheme 17

Remove left and right swivel bearings

refer to AXLE SHAFTS - X5 .

Remove output shafts

refer to AXLE SHAFTS - X5 .

Remove propeller shaft at front

refer to 26 20 000 REMOVING AND INSTALLING FRONT PROPELLER SHAFT .

Note. To remove and install engine with exhaust manifold, you must remove partition wall (3). Unclip hose and cable, disconnect plug connection (1). Feed out wiring harness (2). Release nut and screws, remove partition wall (3).

Unfasten ground tape from right of engine support.

Unfasten top left and right nuts on engine mount.

Scheme 18

Fit engine to special tool 11 0 000.

Scheme 19

11 12 004 Removing and installing/sealing both cylinder head covers (M62)

Instructions for disconnecting and connecting battery

refer to 12 00 ... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .

Disconnect battery negative terminal.

Remove heater bulkhead

refer to 51 71 080 REMOVING AND INSTALLING/REPLACING HEATER BULKHEAD .

Turn fasteners on acoustic cover 90° counterclockwise, remove acoustic cover.

Scheme 20

Release bellows on throttle. Remove upper section of suction filter housing with mass air flow sensor. Remove lower section of suction filter housing.

Detach battery positive lead from support point on firewall. Feed out battery positive lead and lay to one side.

Cylinder head cover of cylinder bank 1 to 4

Remove washer fluid reservoir.

Cylinder head cover of cylinder bank 5 to 8

Unclip water hoses from holder on heater valve and press to one side.

Note. Water pipes remain connected.

Note. Vent line for front axle differential and positive lead is laid under cover of ignition coils.

Scheme 21

1. Vent line for front axle differential
2. Positive lead

Remove ignition coils

refer to 12 13 511 REPLACING IGNITION COIL (M60, M62) .

Scheme 22

Cylinder bank 5 to 8

Detach vent hose (1) from cylinder head cover.

Scheme 23

Unfasten left and right cable ducts and fold inwards.

Scheme 24

Unfasten retaining elements on left and right sides.

Scheme 25

Layout of retaining elements

Scheme 26

1. Nut
2. Washer
3. Rubber mount

Check seal, replace if necessary.

Coat outer and inner grooves and sealing face of cylinder head cover all round with anti-friction rubber coating, e.g. glycerine.

Press internal gasket into groove in cover without torsional stress, starting at the four corner radii.

Scheme 27

Align outer gasket loosely on groove in cover. Secure gasket in groove in cover, starting in the corner radii at the back (1) and locate without torsional stress in the groove.

Scheme 28

Clean gasket residue from sealing surface.

Apply coat of Drei Bond 1209 to contact surfaces of joint.

Scheme 29

Note. Illustration with engine removed.

Clean gasket residue from sealing surface.

Apply thin, uniform bead of Drei Bond 1209 to transmission area on half-moon sections.

Scheme 30

Note. Illustration with engine removed.

Check that side of gasket is correctly seated and check back of cylinder head.

Scheme 31

Screw two retaining elements to the locating points, without preload at this stage, and align the cover. Install all other retaining elements and tighten crosswise from inside to outside.

Scheme 32

11 12 005 Removing and installing / sealing left cylinder head cover (M62)

This operation is described in section on removing and installing / sealing both cylinder head covers

refer to 11 12 004 REMOVING AND INSTALLING/SEALING BOTH CYLINDER HEAD COVERS (M62)

11 12 006 Removing and installing / sealing right cylinder head cover (M62)

This operation is described in section on removing and installing / sealing both cylinder head covers

refer to 11 12 004 REMOVING AND INSTALLING/SEALING BOTH CYLINDER HEAD COVERS (M62)

11 12 105 Removing and installing left cylinder head (M62)

(cylinder bank 5 to 8)

Remove left exhaust manifold

refer to 11 62 060 REMOVING AND INSTALLING/REPLACING LEFT EXHAUST MANIFOLD (M62/N62) .

Unfasten drain plug for coolant on left engine block.

Drain and dispose of coolant.

Replace sealing ring.

Tightening torque

refer to 11 11 5AZ in ENGINE - TIGHTENING TORQUES

Top up coolant. Vent cooling system and check for leaks

refer to 17 00 005 DRAINING AND TOPPING UP COOLANT .

Remove both cylinder head covers

refer to 11 12 004 REMOVING AND INSTALLING/SEALING BOTH CYLINDER HEAD COVERS (M62) .

Remove spark plugs

refer to 12 12 011 REPLACING ALL SPARK PLUGS .

Remove intake air manifold

refer to 11 61 050 REMOVING AND INSTALLING INTAKE AIR MANIFOLD (M62) .

Remove coolant manifold

refer to 11 53 325 REMOVING AND INSTALLING/REPLACING COOLANT MANIFOLD (M62) .

Removal

Removal of cylinder head is described separately from installation.

Remove left camshaft adjustment unit

refer to 11 36 610 REMOVING AND INSTALLING/REPLACING LEFT CAMSHAFT ADJUSTMENT UNIT (M62 VANOS FROM 9/98) .

Pull back special tool 11 5 180 until flywheel is no longer secured in place.

Scheme 33

Lift timing chain and hold under tension.

Note. Note marks.

Crank engine at central bolt against direction of rotation to 45° before TDC position.

Scheme 34

Remove special tools 11 2 444 / 443 / 442 / 446.

Scheme 35

Detach guide rail from cylinder head.

Scheme 36

Release cylinder head bolts in sequence 10 to 1.

Lift off cylinder head.

Scheme 37

Installation of cylinder head is described separately from removal.

Clean sealing faces of cylinder head and engine block, if necessary using wooden scraper to remove gasket debris. Ensure that no gasket debris drops into the oil and coolant ducts.

Threaded bores in engine block must be free of dirt and oil (danger of cracking the block)

Coat joint between engine block and timing case cover with Drei Bond 1209.

Scheme 38

Check that dowel sleeves are undamaged and correctly located.

Place new cylinder head gasket in position.

Scheme 39

Put the cylinder head on. Install new cylinder head bolts. Do not wash off bolt coating.

Note. Use special tool 00 9 120 as a torsion angle bracket.

Scheme 40

Tighten down cylinder head bolts in sequence 1 to 10.

Tightening torque

refer to 11 12 8AZ in ENGINE - TIGHTENING TORQUES .

Scheme 41

Insert and tighten down guide rail screw.

Scheme 42

Rotate camshafts until camshaft markings face upwards.

Scheme 43

Align camshafts.

Fit special tool 11 2 446 / 442 to camshafts on cylinder bank 5 to 8.

Scheme 44

Align camshafts with an open-end wrench so that special tools 11 2 442 / 446 rest without a gap on the cylinder head.

Scheme 45

Fit special tool 11 2 443 to special tool 11 2 446 / 442 and secure with special tool 11 2 444 using the spark plug thread.

Scheme 46

Lift timing chain and hold under tension.

Crank engine from 45° before TDC position in direction of rotation up to TDC position.

Secure crankshaft with special tool 11 5 180 in TDC position.

Scheme 47

Remove left camshaft adjustment unit

refer to 11 36 610 REMOVING AND INSTALLING/REPLACING LEFT CAMSHAFT ADJUSTMENT UNIT (M62 VANOS FROM 9/98) .

Assemble engine.

11 12 106 Removing and installing right cylinder head (M62 VANOS from 9/98)

(cylinder bank 1 to 4)

Remove right exhaust manifold, refer to 11 62 065 REMOVING AND INSTALLING/REPLACING RIGHT EXHAUST MANIFOLD (M62/N62) .

Unfasten drain plug for coolant on right engine block.

Drain and dispose of coolant.

Replace sealing ring.

Tightening torque, refer to 11 11 5AZ in ENGINE - TIGHTENING TORQUES

Top up coolant. Vent cooling system and check for leaks, refer to 17 00 005 DRAINING AND TOPPING UP COOLANT .

Remove both cylinder head covers, refer to 11 12 004 REMOVING AND INSTALLING/SEALING BOTH CYLINDER HEAD COVERS (M62) .

Remove spark plugs, refer to 12 12 011 REPLACING ALL SPARK PLUGS .

Remove fan clutch with fan impeller, refer to 11 52 020 REMOVING AND INSTALLING OR REPLACING FAN COUPLING (M62) .

Remove intake air manifold, refer to 11 61 050 REMOVING AND INSTALLING INTAKE AIR MANIFOLD (M62) .

Remove coolant manifold, refer to 11 53 325 REMOVING AND INSTALLING/REPLACING COOLANT MANIFOLD (M62) .

Removal of cylinder head is described separately from installation.

Remove right camshaft adjustment unit, refer to 11 36 615 REMOVING AND INSTALLING/REPLACING RIGHT CAMSHAFT ADJUSTMENT UNIT (M62 VANOS FROM 9/98) .

E53 (X5)

Pull back special tool 11 5 180 until flywheel is no longer secured in place.

Scheme 48

Lift timing chain and hold under tension.

Note. Note marks.

Crank engine at central bolt against direction of rotation to 45° before TDC position.

Scheme 49

Remove special tools 11 2 444 / 443 / 445 / 441.

Scheme 50

Release cylinder head bolts in sequence 10 to 1.

Lift off cylinder head.

Scheme 51

Installation of cylinder head is described separately from removal.

Clean sealing faces of cylinder head and engine block, if necessary using wooden scraper to remove gasket debris. Ensure that no gasket debris drops into the oil and coolant ducts.

Threaded bores in engine block must be free of dirt and oil (danger of cracking).

Coat joint between engine block and timing case cover with Drei Bond 1209.

Scheme 52

Check that dowel sleeves are undamaged and correctly located.

Place new cylinder head gasket in position.

Scheme 53

Put the cylinder head on. Install new cylinder head bolts. Do not wash off bolt coating.

Note. Use special tool 00 9 120 for torsion angle tightening.

Scheme 54

Tighten down cylinder head bolts in sequence 1 to 10.

Tightening torque, refer to 11 12 8AZ in ENGINE - TIGHTENING TORQUES

Scheme 55

Rotate camshafts until camshaft markings face upwards.

Scheme 56

Fit special tool 11 2 445 / 441 to camshafts on cylinder bank 1 to 4.

Scheme 57

Align camshafts with an open-end wrench so that special tools 11 2 441 / 445 rest without a gap on the cylinder head.

Scheme 58

Fit special tool 11 2 443 to special tool 11 2 445 / 441 and secure with special tool 11 2 444 using the spark plug thread.

Scheme 59

Lift timing chain and hold under tension.

Crank engine from 45° before TDC position in direction of rotation up to TDC position.

Secure crankshaft with special tool 11 5 180 in TDC position.

Scheme 60

Install right camshaft adjustment unit, refer to 11 36 615 REMOVING AND INSTALLING/REPLACING RIGHT CAMSHAFT ADJUSTMENT UNIT (M62 VANOS FROM 9/98) .

Assemble engine.

11 12 107 Removing and installing both cylinder heads (M62)

Remove both cylinder heads.

These tasks are described in Removing and installing right/left cylinder head

refer to 11 12 105 REMOVING AND INSTALLING LEFT CYLINDER HEAD (M62) / 106.

11 12 110 Replacing left cylinder head gasket (M62 / S62 / N62)

(cylinder bank 5 to 8)

This task is described in Removing and installing left cylinder head.

11 12 111 Replacing right cylinder head gasket (M62 / S62 / N62)

(cylinder bank 1 to 4)

This task is described in the section Removing and installing right cylinder head.

11 12 503 Dismantling and reassembling cylinder head (M62)

(cylinder head removed)

Screw special tool 11 0 213 to special tool 11 1 065.

Scheme 61

Secure special tool 11 1 065 to special tool 00 1 490.

Provide special tools for cylinder head disassembly

Scheme 62

Scheme 63

1. special tool 11 1 071
2. special tool 11 1 067
3. special tool 11 0 192
4. special tool 11 1 045
5. special tool 11 0 345
6. special tool 11 0 342
7. special tool 11 0 343
8. special tool 11 0 211

Note. At this point, do not install special tool 11 0 211 (support board) in special tool 11 1 065.

Scheme 64

Fit cylinder head on special tool 11 1 065 and secure with two cylinder head screws.

Scheme 65

Remove camshafts. This task is described in the section "Removing left/right camshafts"

refer to 11 31 011 REPLACING LEFT CAMSHAFTS (M62 VANOS FROM 9/98) / 11 31 015.

Remove all valve springs

Refer to 11 34 715 REPLACING ALL VALVE SPRINGS (M62) .

Remove all valve stem seals

refer to 11 34 560 REPLACING ALL VALVE STEM SEALS (M62, S62) .

Remove all valves

refer to 11 34 552 REMOVING AND INSTALLING / REPLACING ALL VALVES (M62) .

11 12 527 Remachining a valve seat (M62, S62)

(cylinder head dismantled)

Machine valve seat surface with special tool 00 3 520 or 00 3 580 in accordance with tool manufacturer's instructions.

Scheme 66

After machining the valve-seat face on OD and bore diameter, rework to specified diameter with correction milling tool until valve seat width (5) is obtained.

1. Valve-seat angle
2. Correction angle, external diameter
3. Correction angle, internal diameter
4. Outside "OSLASH" of the seat face
5. Valve seat width

Specified values (1 to 5)

refer to ENGINE - TECHNICAL DATA - X5 .

Scheme 67

11 12 595 Checking a valve guide for wear (M62, S62)

(valve removed)

To measure tilt clearance, insert new valve so that valve stem end is flush with valve guide.

Mount dial gage and measure tilt clearance.

Note. Max. permissible tilt clearance

refer to ENGINE - TECHNICAL DATA - X5

Scheme 68

Note. If tilt clearance is excessive, valve guide is reamed out and a repair valve with a larger shaft diameter is installed.

If necessary, ream out valve guide

refer to 11 12 600 REAMING A VALVE GUIDE (M62, S62) .

Scheme 69

11 12 600 Reaming a valve guide (M62, S62)

(valve removed)

Note. In event of excessive clearance between valve stem and valve guide

1. Ream out valve guide
2. Install repair valve with larger stem diameter

Assemble the reaming tool and guide taper (1) from the special tool kit 00 4 210 depending on the shaft diameter. Press guide taper (1) onto valve seat. Starting from combustion chamber side, ream valve guide dry. Rotate reaming tool once in downwards direction.

Note. After reaming out, remachine valve seat

refer to 11 12 527 REMACHINING A VALVE SEAT (M62, S62) .

Scheme 70

11 12 719 Milling down cylinder head gasketing face (M62)

(Cylinder head dismantled)

Check flatness of cylinder head gasketing face with straightedge (standard).

Deviation max. 0.05 mm.

Note. Machine limit, refer to ENGINE - TECHNICAL DATA - X5 .

Scheme 71

Note. The repair cylinder head gasket is designated at the back with a bore beside the 4th or 8th cylinder.

Scheme 72

11 12 729 Checking cylinder head for water leaks (M62)

(Cylinder head dismantled)

Seal coolant apertures with special tool kit 11 1 470.

Note. Special tool 11 1 473 for cylinder bank 1-4 Special tool 11 1 474 for cylinder bank 5-8

Scheme 73

Immerse cylinder head in a water bath. Inspection pressure 4.5 bar.

Check cylinder head for escaping air (cracks).

Note. If necessary, add cleaning agent to water bath.

Scheme 74

11 13 010 Removing and installing/replacing upper section of oil sump (M62)

Note. For removal of oil sump, front axle support must be lowered. There is no need to perform a front axle alignment check.

Instructions for disconnecting and connecting battery

refer to 12 00 ... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .

Disconnect negative battery lead.

Remove heater bulkhead

refer to 51 71 080 REMOVING AND INSTALLING/REPLACING HEATER BULKHEAD .

Lift engine hood into assembly position.

Note. The following work must be carried out with a second person assisting. Work instruction applies to left and right sides. Gently raise retaining clip and simultaneously push upwards. Hold engine hood, unhook damper on hood. Open engine hood fully and reattach damper with special tool 51 2 170 to hood.

Scheme 75

Turn fasteners on acoustic cover 90° counterclockwise, remove acoustic cover.

Scheme 76

Release bellows on throttle. Remove upper section of suction filter housing with mass air flow sensor.

Release guide tube for oil dipstick on right side of timing case cover.

Scheme 77

Note. The supports (1) of special tool 00 0 208 must make contact with the screws on the side walls. Fit special tool 00 0 200 to special tool 00 0 201 / 202 / 204 / 208 and attach.

Scheme 78

Tighten the screws (1 and 2).

Scheme 79

Unfasten top left and right nuts on engine mount.

Scheme 80

Raise engine with special tool 00 0 200 approx. 10 to 12 mm.

Scheme 81

Remove front splash guard and reinforcement plate. See FRONT AXLE SUPPORT .

Detach positive lead from starter motor and unclip from cable guides.

Remove left and right swivel bearings

refer to AXLE SHAFTS - X5 .

Remove output shafts

refer to AXLE SHAFTS - X5 .

Remove bearing pedestal of right output shaft from oil sump

Remove propeller shaft at front

refer to PROPELLER SHAFT - REPAIR INSTRUCTIONS .

Unfasten steering spindle from steering gear. This task is described in the work step "Removing and installing steering gear"

refer to POWER STEERING GEAR

Provisionally reinstall left and right swivel bearings and connect with a screw to spring strut.

Provisionally connect tension strut, control arm and tie rod to swivel bearing.

Remove front axle differential

refer to FRONT DIFFERENTIALS .

As shown in illustration, support front axle support with special tool 00 2 030 in conjunction with special tool 31 2 220 and a block of wood.

Scheme 82

Note. Steering gear remains bolted to front axle support. Return hose of steering gear must not be overstretched when front axle support is lowered.

Detach front axle support from engine carrier and carefully lower by approx. 90 to 100 mm.

Tightening torque and installation instructions for front axle support

refer to SUSPENSION - FRONT .

Remove alternator drive belt

refer to 11 28 010 REPLACING ALTERNATOR DRIVE BELT (M62) .

Remove vane pump from oil sump

Note. Lines remain connected. Tie vane pump to one side.

Relieve tension on A/C compressor drive belt and remove adjustable plate from oil sump

refer to 11 28 050 REPLACING DRIVE BELT FOR A/C COMPRESSOR (M60 / M62 / M73) .

Open oil drain plug and drain off engine oil.

Remove lower oil sump section

refer to 11 13 020 REMOVING AND INSTALLING/REPLACING LOWER SECTION OF OIL SUMP (M62) .

Unfasten guide tube for dipstick on oil sump.

Replace O-ring.

Insert O-ring and washer in oil sump bore.

Scheme 83

Detach oil return line coming from oil separator from oil sump.

Scheme 84

Replace sealing ring.

Tightening torque

refer to 11 42 8AZ in ENGINE - TIGHTENING TORQUES .

Detach oil return line coming from main flow oil filter to oil sump.

Scheme 85

Replace sealing ring.

Tightening torque

refer to 11 42 5AZ in ENGINE - TIGHTENING TORQUES

Remove snorkel on oil pump.

Scheme 86

Replace O-ring.

If necessary, secure O-ring with grease in oil pump.

Scheme 87

Unfasten screws inside oil sump.

Scheme 88

Remove cable guide (1) for positive lead.

Scheme 89

Unfasten screws to sealing cover.

Scheme 90

Unfasten remaining screws from oil sump.

Remove upper oil sump section towards rear.

Sealing faces clean and free of seal debris.

Coat engine block at gap to end cover and to timing case cover with Drei Bond 1209 sealing compound.

Scheme 91

1. Replace gasket
2. Install oil sump.
3. Insert all oil sump screws.
4. Insert screws in transmission end without preload at this stage.
5. Tighten down screws in engine end.
6. Tighten down screws in transmission end.

11 13 020 Removing and installing/replacing lower section of oil sump (M62)

Open cover on main flow oil filter, engine oil returns to oil sump.

Remove reinforcement plate. See FRONT AXLE SUPPORT .

Open oil drain plug. Drain engine oil.

Unfasten plug connection on oil level switch.

Unclip cable guide.

Release screws (1) and remove lower oil sump section.

Clean sealing surfaces.

Replace seal.

Insert all screws (1) and tighten down.

Tightening torque

refer to 11 13 2AZ in ENGINE - TIGHTENING TORQUES

Scheme 92

11 14 080 Removing and installing timing case cover, top left (M62 VANOS from 9/98)

Remove left cylinder head cover. These tasks are described in the work step Removing and installing/sealing both cylinder head covers

refer to 11 12 004 REMOVING AND INSTALLING/SEALING BOTH CYLINDER HEAD COVERS (M62) .

Remove fan clutch with impeller

refer to 11 52 020 REMOVING AND INSTALLING OR REPLACING FAN COUPLING (M62) .

Remove solenoid valve of camshaft adjustment unit, left

refer to 11 36 585 REMOVING AND INSTALLING/REPLACING SOLENOID VALVE OF CAMSHAFT ADJUSTMENT UNIT, LEFT (M62 VANOS FROM 9/98) .

Disconnect plug connection to check valve.

Detach secondary-air line on timing case cover, top left and right.

Detach secondary-air line on bracket and remove.

Clean sealing faces on cylinder head, replace sealing ring on secondary-air line and apply a thin coat of grease as anti-friction agent.

Scheme 93

Unfasten timing case cover.

Scheme 94

Remove rubber sealing strip.

Clean groove for rubber profile seal and sealing surfaces of remains of seal.

Scheme 95

Keep sealing faces clean and free of oil.

Apply coat of Drei Bond 1209 to joint between cylinder head and lower timing case cover.

Scheme 96

Seat new rubber seal in groove.

Scheme 97

Ensure that seal is correctly seated, then fit timing case cover with inserted screw (1).

Note. It is not possible to insert screw (1) after fitting the timing case cover.

Scheme 98

Install screws (1) and fit flush with cylinder head.

Scheme 99

Remove outer and inner gasket from cylinder head cover.

Insert special tool 11 6 432 from special tool kit 11 6 430 in groove of cover and fit cylinder head cover.

Scheme 100

Install cover nuts (1) and tighten down uniformly in 1/2 turn steps.

Tightening Torque

refer to 11 12 11AZ in ENGINE - TIGHTENING TORQUES

Note. The timing case cover is pressed down onto level of cylinder head by cylinder head cover.

Scheme 101

Tighten screws (1) on timing case cover in two passes.

Scheme 102

Remove cylinder head cover and remove special tool 11 6 432.

Scheme 103

Remove solenoid valve of camshaft adjustment unit, left

refer to 11 36 585 REMOVING AND INSTALLING/REPLACING SOLENOID VALVE OF CAMSHAFT ADJUSTMENT UNIT, LEFT (M62 VANOS FROM 9/98) .

Assemble engine.

11 14 085 Removing and installing timing case cover, top right (M62 VANOS from 9/98)

Disconnect plug connection to check valve.

Detach secondary-air line on timing case cover, top left and right.

Detach secondary-air line on bracket and remove.

Clean sealing faces on cylinder head, replace sealing ring on secondary-air line and apply a thin coat of grease as anti-friction agent.

Scheme 104

Unfasten top screw from dipstick tube.

Scheme 105

Remove right cylinder head cover. These tasks are described in the work step Removing and installing/sealing both cylinder head covers

refer to 11 12 004 REMOVING AND INSTALLING/SEALING BOTH CYLINDER HEAD COVERS (M62) .

Remove piston for chain tensioner

refer to 11 31 090 INSTALLING AND REMOVING / REPLACING PISTON FOR CHAIN TENSIONER (M62) .

Release screws on sealing flange.

Scheme 106

Note. The sealing flange seals the timing case cover via the solenoid valve.

If necessary, clean solenoid valve with a cloth.

Remove sealing flange (1).

Scheme 107

If necessary, remove camshaft sensor or disconnect plug connection to cable duct.

Release screws and remove timing case cover at top.

Scheme 108

Remove rubber sealing strip.

Clean groove for rubber profile seal and sealing surfaces of remains of seal.

Scheme 109

Replace sealing ring in cylinder head for oil supply of chain tensioner.

Scheme 110

Keep sealing faces clean and free of oil.

Apply coat of Drei Bond 1209 to joint between cylinder head and lower timing case cover.

Scheme 111

Seat new rubber seal in groove.

Scheme 112

Ensure that seals are correctly seated.

Press bow cover inwards and fit timing case cover.

Install screws (1) and fit flush with cylinder head.

Scheme 113

Remove outer and inner gasket from cylinder head cover.

Insert special tool 11 6 431 from special tool kit 11 6 430 in groove of cover and fit cylinder head cover.

Scheme 114

Install cover nuts (1) and tighten down uniformly in 1/2 turn steps.

Tightening Torque

see 11 12 11AZ in ENGINE - TIGHTENING TORQUES

Note. The timing case cover is pressed down onto level of cylinder head by cylinder head cover.

Scheme 115

Tighten screws (1) on timing case cover in two passes.

Scheme 116

Remove cylinder head cover and remove special tool 11 6 431.

Scheme 117

Clean solenoid valve (1) and sealing face (2).

Scheme 118

Check sealing flange (1), replace if necessary.

Apply a light coat of oil to inside of sealing flange (1) at sealing face to solenoid valve and carefully install.

Scheme 119

Insert screws on sealing flange and tighten down.

Assemble engine.

Scheme 120

11 14 110 Removing and installing timing case cover, bottom (M62 VANOS from 9/98)

Instructions for disconnecting and connecting battery

refer to 12 00 ... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .

Disconnect negative battery lead.

Unfasten drain plug for coolant on right engine block.

Drain and dispose of coolant.

Replace sealing ring on drain plug.

Tightening Torque

refer to 11 11 5AZ in ENGINE - TIGHTENING TORQUES

Top up coolant. Vent cooling system and check for leaks

refer to 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR LEAKS .

Remove timing case covers, top left and right

refer to 11 14 080 REMOVING AND INSTALLING TIMING CASE COVER, TOP LEFT (M62 VANOS FROM 9/98) .

Remove hub for vibration damper

refer to 11 23 031 REMOVING AND INSTALLING/REPLACING HUB FOR VIBRATION DAMPER (M62) .

Remove water pump with thermostat housing

refer to 11 51 000 REMOVING AND INSTALLING/REPLACING WATER PUMP (M62 / S62) .

Note. When the liquid-cooled alternator is removed, a residual quantity of coolant emerges from the timing case cover. Catch and dispose of residual quantity of coolant.

Remove liquid-cooled alternator.

Remove upper oil sump section

refer to 11 13 010 REMOVING AND INSTALLING/REPLACING UPPER SECTION OF OIL SUMP (M62) .

Press bow cover against the timing chain. Secure bow cover with a plastic strap (1).

Remove lower timing case cover.

Scheme 121

Clean and remove grease from sealing surfaces of the engine block.

Check dowel sleeves (1) for damage and correct installation position.

Replace seals (2 and 3).

Apply thin coat of Drei Bond 1209 to front and back edges of seals.

Scheme 122

Install timing case cover, insert all screws and initially tighten to approx. 5 N.m.

Firmly tighten all screws in alternate sequence.

Tightening Torque

refer to 11 14 1AZ in ENGINE - TIGHTENING TORQUES

Replace radial seal in timing case cover at bottom

refer to 11 14 141 REPLACING RADIAL SEAL BELOW TIMING CASE COVER (M62) .

Scheme 123

11 14 141 Replacing radial seal below timing case cover (M62)

Removing hub for vibration damper

refer to 11 23 031 REMOVING AND INSTALLING/REPLACING HUB FOR VIBRATION DAMPER (M62)

Fit special tool 11 2 383 to crankshaft.

Scheme 124

Screw on special tool 11 2 380 until it is securely connected to the radial seal.

Remove radial sealing ring by tightening in the screw.

Scheme 125

Coat sealing lips of new radial sealing ring with oil.

Using special tool 11 1 220 and central screw, install radial seal until flush with timing case cover.

Scheme 126

11 14 151 Replacing crankshaft radial seal (M62/S62)

(transmission side)

1. Remove gearbox
2. Drain off engine oil
3. Remove flywheel

Unfasten screws.

Scheme 127

Unfasten screw on rear end cover.

Carefully unfasten oil sump gasket from end cover and remove end cover.

Scheme 128

Note. The end cover is in the set with the radial sealing ring. If necessary, lift out the radial seal and drive in new sealing ring using special tool 11 1 230 in conjunction with special tool 00 5 500.

Scheme 129

Check for correct fit of hollow bushes.

Replace seal.

Coat contact points on joint along oil sump with Drei Bond 1209.

Scheme 130

Fit special tool 11 2 390 on crankshaft.

Coat sealing lip of radial sealing ring with oil.

Slide on end cover.

Carefully remove special tool 11 2 390.

Scheme 131

Replace the sealing washers under the screws (1).

Insert all screws and tighten down end cover.

Scheme 132

11 21 500 Replacing crankshaft (M62)

(engine removed)

Unscrew oil sump.

Remove oil pump.

Remove timing case cover at bottom

refer to 11 14 110 REMOVING AND INSTALLING TIMING CASE COVER, BOTTOM (M62 VANOS FROM 9/98) .

Remove piston

refer to 11 25 530 REMOVING AND INSTALLING / REPLACING ALL PISTONS (M62) .

Remove flywheel

refer to 11 22 500 REMOVING AND INSTALLING/REPLACING FLYWHEEL (M62 / S62) / 11 22 510.

Remove rear end cover. This task is described in the section Replacing crankshaft radial seal

refer to 11 14 151 REPLACING CRANKSHAFT RADIAL SEAL (M62/S62) .

Unfasten taper screw mount on main bearing. (Collar screws and spacer screws.)

Scheme 133

Remove screws securing main bearing caps.

Scheme 134

Remove main bearing caps 1 to 5.

Lever out crankshaft.

Scheme 135

refer to ENGINE - TECHNICAL DATA - X5 .

Scheme 136

If necessary, remove sprocket wheel from crankshaft.

Fit special tool 11 2 383 to crankshaft.

Remove sprocket wheel with special tool 11 2 001 in conjunction with special tool 11 2 005 and special tool 11 2 004.

Scheme 137

Shrink-fit sprocket wheel to crankshaft.

Check wedge for correct position.

Heat sprocket wheel with a hot-air blower or on a heating plate to max. 150° C.

Replace main crankshaft bearing shells

refer to 11 21 531 REPLACING MAIN CRANKSHAFT BEARING SHELL (M62) .

Replace conrod bearing shells

refer to 11 24 571 REPLACING ALL CONROD BEARINGS (M62) .

Replace deep-groove ball bearings in crankshaft

refer to 11 21 571 REPLACING GROOVED BALL BEARING IN CRANKSHAFT (M62 / S62) .

11 21 531 Replacing main crankshaft bearing shell (M62)

(engine dismantled)

Clean components before installation.

Preliminary tasks are described under Replacing Crankshaft

refer to 11 21 500 REPLACING CRANKSHAFT (M62) .

refer to ENGINE - TECHNICAL DATA - X5 .

Scheme 138

Note. Install main bearing shells (1) in the motor block with lubrication groove. Install main bearing shells (2) without lubrication groove in the main bearing caps.

Scheme 139

Note. When crankshaft or main bearing shells are being replaced, the classification for the arrangement of the main bearing shells in the crankcase is no longer of significance. Install yellow main bearing shells in crankcase.

Scheme 140

Note. The crankshaft is marked with yellow, green or white paint according to the tolerance of the main journal.

Coat bearing shells with oil.

Install crankshaft.

Scheme 141

Note. Place main bearing shells with same color code as that of crankshaft in main bearing caps.

Scheme 142

Release hex head in main bearing cap.

Scheme 143

Note. (3) Install stop disk for collar bearing (in engine block). (4) Install stop disk for collar bearing (in main bearing cap).

Insert stop disks for collar bearing on both sides between crankshaft and engine block at main bearing 5.

Scheme 144

Align thrust washers with contact face of main bearing caps.

Scheme 145

Note. Main bearing caps (1 to 3) are marked with punch numbers. The main bearing caps 4 and 5 are not marked.

Note. Main bearing cap no. 5 can be identified by the recesses for the stop disks of the thrust bearing.

Scheme 146

Insert stop disks on both sides into grooves of main bearing cap no. 5.

Scheme 147

Checking main bearing clearance

Do not twist crankshaft.

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

Scheme 148

Position main bearing caps (1 to 5) so that retaining grooves of main bearing shells are on one side.

Align main bearing cap flush with side of bearing seat.

Scheme 149

To check crankshaft bearing clearance, use old main bearing screws.

No oil is permitted in the blind bores (danger of cracking).

1. Tighten all screws on main bearing cover with jointing torque.
2. Tighten down all bolts on main bearing cap with special tool 00 9 120 with torsion angle.

Tightening Torque

refer to 11 11 2AZ in ENGINE - TIGHTENING TORQUES

Scheme 150

Remove main bearing cover and read off main bearing clearance from thickness of crushed plastic thread with the help of the measuring scale.

Main bearing clearance

refer to ENGINE - TECHNICAL DATA - X5

Scheme 151

Remove plastic thread.

Lubricate crankshaft and main bearing shells.

Position main bearing caps (1 to 5) so that retaining grooves of main bearing shells are on one side.

Align main bearing cap flush with side of bearing seat.

Scheme 152

Note. The main bearing cap screws must always be replaced by new ones. Do not wash off bolt coating. No oil is permitted in the blind bores (risk of cracking)!

Tightening specifications for main bearing

1. Tighten all screws on main bearing cover with jointing torque.
2. Unfasten screws on main bearing cover 5
3. Strike back and front of crankshaft with plastic hammer to center thrust bearing (do not damage crankshaft).
4. Tighten screws of main bearing cover 5 with jointing torque.
5. Tighten down all bolts on main bearing cap with special tool 00 9 120 with torsion angle.

For Tightening Torque

refer to 11 11 2AZ in ENGINE - TIGHTENING TORQUES

Scheme 153

Check axial play.

Axial play

refer to Technical Data in ENGINE - TECHNICAL DATA - X5

Check guide bearing shell, crankshaft and crankcase if necessary.

Scheme 154

Tighten threaded protective bushes.

Tightening Torque

refer to 11 11 3AZ in ENGINE - TIGHTENING TORQUES

Scheme 155

Replace collar screws.

Tighten taper screw mount on main bearing (collar screws and spacer pins).

Tightening Torque

refer to 11 11 3AZ in ENGINE - TIGHTENING TORQUES

Scheme 156

11 21 571 Replacing grooved ball bearing in crankshaft (M62 / S62)

(Clutch removed)

Remove grooved ball bearing with special tool 11 2 340 in conjunction with special tool 11 2 016.

Scheme 157

Install new thrust bearing and drive firmly home with special tool 11 2 350 in conjunction with special tool 00 5 500.

Scheme 158

11 22 500 Removing and installing/replacing flywheel (M62 / S62)

(clutch removed)

Block flywheel with special tool 11 2 070.

Scheme 159

Release and tighten the flywheel (ZMS) only with special tool 11 4 180.

Tightening Torque

see 11 22 1AZ in ENGINE - TIGHTENING TORQUES .

Scheme 160

Clean thread for flywheel screws in crankshaft.

Scheme 161

The flywheel (ZMS) is located with a special (shorter) dowel sleeve.

Scheme 162

The position of the dowel sleeve (1) in the dual-mass flywheel is marked with two notches beside the respective screw bore.

Scheme 163

Tightening Torque

refer to 11 22 1AZ in ENGINE - TIGHTENING TORQUES

11 22 510 Removing and installing/replacing flywheel (M62)

(Transmission removed)

Block the flywheel using special tool 11 2 070.

Scheme 164

Unfasten flywheel screws.

Remove drive plate (1).

Remove flywheel (2).

Scheme 165

Clean threads on flywheel screws in crankshaft.

Scheme 166

The flywheel is secured with a dowel sleeve.

Scheme 167

Fit flywheel (2) and mount drive plate (1) for torque converter correctly. Holes in drive plate (1) and flywheel (2) must be aligned over one another.

Fit new flywheel screws.

Tightening torque

refer to 11 22 1AZ in ENGINE - TIGHTENING TORQUES

Scheme 168

11 23 010 Removing and installing/replacing vibration damper (M62)

Unscrew and remove splash guard.

Remove alternator drive belt

refer to 11 28 010 REPLACING ALTERNATOR DRIVE BELT (M62)

Remove drive belt for a/c compressor

refer to 11 28 050 REPLACING DRIVE BELT FOR A/C COMPRESSOR (M60 / M62 / M73)

Release screws and remove vibration damper.

Scheme 169

The vibration damper is located with a dowel pin. Replace screws.

Tightening torque

refer to 11 23 3AZ in ENGINE - TIGHTENING TORQUES

Scheme 170

11 23 031 Removing and installing/replacing hub for vibration damper (M62)

Remove fan cowl

refer to 17 11 031 REPLACING FAN COWL (M62 / M54) .

Remove vibration damper

refer to 11 23 010 REMOVING AND INSTALLING/REPLACING VIBRATION DAMPER (M62) .

Note. When releasing and tightening down the central bolt, you must support the special tool 11 2 450 on the engine carrier. Accessibility is achieved after removal of the power steering pump and the mounting plate with oil-water heat exchanger from radiator.

Note. Lines of power steering pump, oil-water heat exchanger and water hoses remain connected.

Remove power steering pump from oil sump.

Note. Lines remain connected.

Crank engine at central bolt and align dowel pin (1) to bore in special tool 11 2 450.

Scheme 171

Screw down special tool 11 2 450 with hub for vibration damper.

Note. Protect engine bracket from damage. Insert wood between engine support and special tool 11 2 450.

Release central bolt (1).

Remove hub for vibration damper.

Scheme 172

Align groove in hub for vibration damper to featherkey.

Install hub (1) for vibration damper.

Scheme 173

Note. Lines on oil-water heat exchanger and water hoses remain connected.

Release screw (1) and expansion rivet (2), remove mounting plate with oil-water heat exchanger from radiator.

Scheme 174

Replace central screw.

Crank engine at central bolt and align dowel pin (1) to bore in special tool 11 2 450.

Scheme 175

Pull mounting plate downwards as far as water hoses permit.

Feed in special tool 11 2 450 between oil-water heat exchanger (1) and engine carrier.

Scheme 176

Screw down special tool 11 2 450 with hub for vibration damper.

Note. Protect engine bracket from damage. Insert wood between engine support and special tool 11 2 450. Tighten down central bolt (1) to joining torque. Tightening torque, refer to 11 23 2AZ in ENGINE - TIGHTENING TORQUES

Scheme 177

Place special tool 11 3 460 on special tool 11 2 450.

Note. Special tool 11 3 460 is magnetic.

Scheme 178

Select 0° location and mark on insertion nut. Tighten the central screw with torsion angle.

Tightening torque

refer to 11 23 2AZ in ENGINE - TIGHTENING TORQUES

Scheme 179

11 24 571 Replacing all conrod bearings (M62)

(piston removed)

refer to ENGINE - TECHNICAL DATA - X5 .

Install new conrod bearing shells.

Insert one red and one blue bearing shell for each conrod.

Install pistons

refer to 11 25 530 REMOVING AND INSTALLING / REPLACING ALL PISTONS (M62) .

Scheme 180

Check connecting-rod bearing clearance

Piston in BDC position.

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

Place bearing caps in position, making sure that matching numbers are paired.

Scheme 181

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

Tighten down conrod screws with special tool 00 9 120 or special tool 11 2 110, respectively.

Tightening Torque

refer to 11 24 1AZ in ENGINE - TIGHTENING TORQUES

Scheme 182

Remove bearing cover and read off bearing clearance across width of pinched plastic thread with the help of the measuring scale.

Conrod bearing clearance

see ENGINE - TECHNICAL DATA - X5

1. Remove plastic thread.
2. Lubricate crankshaft and bearing shells.
3. Insert new conrod bolts and tighten down.

Tightening Torque

refer to 11 24 1AZ in ENGINE - TIGHTENING TORQUES

Scheme 183

Special tools required

1. 11 2 470
2. 11 9 500

(engine removed)

Removal of pistons is described separately from installation. The assembly sequence for removal and installation is different.

1. Remove both cylinder heads.
2. Remove upper oil sump section.
3. Remove oil pump.

Conrod and conrod bearing cover are designated with same pair number: do not interchange / confuse.

Unfasten screw and remove spray nozzle.

Scheme 184

Unscrew conrod bearing cover.

Scheme 185

Insert special tool 11 2 470 in conrod.

Remove conrod with piston from cylinder head side.

Scheme 186

Lift out retaining ring and press out piston pin.

Scheme 187

Installation of pistons is described separately from removal. The assembly sequence for removal and installation is different.

If necessary, replace connecting rods.

Note. The conrods can also be replaced individually. The piston pin must be able to be pressed through the liner by hand with little force and must not display any significant play.

Scheme 188

Before installation, measure 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 piston pin.

Measuring point A.

Scheme 189

Adjust micrometer to cylinder bore of engine block, set internal caliper 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.

Scheme 190

Install conrod bearing.

Fit conrod with piston pin to piston in such a way that both of the visible pair numbers on the installation direction arrow on the piston point to the right.

Scheme 191

Install retaining ring.

Scheme 192

Install special tool 11 2 470 in conrod.

Scheme 193

M62 B46 only

Lightly coat pistons and piston rings with oil.

Align contact points of piston rings (offset at approx. 120°, but not over piston pin lug).

Compress piston rings with special tool 11 9 500.

Keep piston rings compressed with special tool 11 9 500.

Install piston so that arrow points to camshaft drive.

Press in piston only with finger force (do not knock in!).

Scheme 194

M62 B35 / B44 only

Lightly coat pistons and piston rings with oil.

Align contact points of piston rings (offset at approx. 120°, but not over piston pin lug).

Press together piston rings using special tool 11 2 260.

Scheme 195

Install piston so that arrow points to camshaft drive.

Entire circumference of tightening strap must rest firmly on engine block.

Press in piston only with finger force (do not knock in!).

Scheme 196

Attach crankpin to connecting rod.

Scheme 197

Apply light coat of oil to connecting-rod bearing shells.

Fit bearing caps so that pair numbers match up.

Install new conrod bolts.

Scheme 198

Tighten down conrod bearing with special tool 00 9 120 or with special tool 11 2 110.

Tightening torque, see 11 24 1AZ in ENGINE - TIGHTENING TORQUES

Scheme 199

Install spray nozzle and tighten down screw.

Scheme 200

11 25 671 Replacing piston rings on all pistons (M62)

(Piston removed)

Remove piston rings with a piston-ring compressing pliers.

Note. It might not be possible to find the identification on used piston rings. Put aside piston rings in correct sequence and installation position. New pistons may only be installed together with new piston rings.

Scheme 201

Insert piston rings with the word "TOP" facing piston crown.

1. Plain compression ring
2. Stepped taper-face ring "TOP"
3. Three-piece steel band ring

Arrange piston ring contact points with offset of approx. 120° to one another, but not over piston pin eye.

Scheme 202

End float

refer to ENGINE - TECHNICAL DATA - X5

Scheme 203

Gap in cylinder

refer to ENGINE - TECHNICAL DATA - X5

Scheme 204

11 28 010 Replacing alternator drive belt (M62)

Note. If the drive belt is to be subsequently reused: Mark direction of travel and reinstall drive belt in same direction of travel.

Remove fan clutch with impeller, refer to 11 52 020 REMOVING AND INSTALLING OR REPLACING FAN COUPLING (M62) .

Layout of drive belt.

Scheme 205

Slacken screws (1) and relieve tension on belt drive.

Note. Release screws (1 and 2) to remove complete belt tensioner.

Remove drive belt.

Scheme 206

Check drive belt for coolant and oil residue and replace if necessary.

Mount drive belt and check that it is correctly positioned on belt pulleys.

Pretension adjustable plate at hexagon head (1) up to end of elongated hole (2) and tighten down screws (3).

Scheme 207

11 28 050 Replacing drive belt for a/c compressor (M60 / M62 / M73)

Note. If the drive belt is to be reused, mark direction of travel and reinstall drive belt in same direction of rotation.

If necessary, remove splash guard.

Remove alternator drive belt, refer to 11 28 010 REPLACING ALTERNATOR DRIVE BELT (M62)

Loosen nuts (2 and 3) and remove compressor drive belt.

Check drive belt for coolant and oil residue and replace if necessary.

Scheme 208

Fit drive belt and check it is correctly located on pulleys.

Tighten hex head (1) to remove adjustment plate up to end of long bore, then tighten nut (3) followed by nut (2).

Scheme 209

Special tools required

1. 00 9 250
2. 11 2 300
3. 11 2 441
4. 11 2 442
5. 11 2 443
6. 11 2 444
7. 11 2 445
8. 11 2 446
9. 11 4 230
10. 11 4 231
11. 11 4 232
12. 11 5 180
13. 11 6 440
14. 11 6 450
15. 11 6 451
16. 11 6 452
17. 11 7 380

Remove intake filter housing with air-mass flow sensor.

Remove fan impeller with fan clutch and fan cowl.

Remove both cylinder head covers.

Remove spark plugs. See 12 12 011 REPLACING ALL SPARK PLUGS

Note. In firing TDC position, the inlet camshaft 1 to 4 rotates in the teeth of the camshaft adjustment unit.

Scheme 210

Remove oil lines on left and right of cylinder head.

Scheme 211

Turn engine in direction of rotation as far as TDC firing position of first cylinder.

Scheme 212

Secure crankshaft with special tool 11 5 180 in TDC firing position of first cylinder.

Scheme 213

Remove chain tensioning piston.

Remove both timing case covers at top.

Release nut (1) on sensor gear screw connection on cylinder bank 1 to 4.

Scheme 214

Remove sensor gear (2) on cylinder bank 1 to 4.

Scheme 215

Release nut (1) on sensor gear screw connection on cylinder bank 5 to 8.

Scheme 216

Remove sensor gear (2) on cylinder bank 5 to 8.

Scheme 217

When releasing camshaft screw connection grip camshaft at hexagon head.

Scheme 218

When releasing camshaft screw connection grip camshaft at hexagon head.

Slacken screw connection (1) of exhaust camshaft on cylinder bank 5 to 8 by approx. a half turn.

Scheme 219

When releasing camshaft screw connection grip camshaft at hexagon head.

Slacken screw connection (1) of exhaust camshaft on cylinder bank 1 to 4 by approx. a half turn.

Scheme 220

When releasing camshaft screw connection grip camshaft at hexagon head.

Slacken screw connection (2) of inlet camshaft on cylinder bank 5 to 8 by approx. a half turn.

Scheme 221

When releasing camshaft screw connection grip camshaft at hexagon head.

Slacken screw connection (2) of inlet camshaft on cylinder bank 1 to 4 by approx. a half turn.

Scheme 222

Align camshafts.

Attach special tool 11 2 445 / 11 2 441 to camshafts, cylinder bank 1 to 4.

Scheme 223

Attach special tool 11 2 443 to special tool 11 2 445 / 11 2 441 and secure with special tool 11 2 444 via spark plug thread.

Scheme 224

Align camshafts.

Attach special tool 11 2 446 / 11 2 442 to camshafts, cylinder bank 5 to 8.

Scheme 225

Attach special tool 11 2 443 to special tool 11 2 446 / 11 2 442 and secure with special tool 11 2 444 via spark plug thread.

Scheme 226

Fit special tool 11 7 380 to right cylinder head on cylinder bank 1 to 4.

Scheme 227

Note. The special tool kit 11 3 390 can no longer be fitted in the E53 (X5) with M62 engine due to the altered space conditions. With the market launch of the E53 (X5) with M62 engine, the special tool kit 11 3 390 is dropped. The shorter special tool kit 11 4 230 comprising special tools 11 4 231 and 11 4 232 replaces the special tool kit 11 3 390.

Scheme 228

Insert special tool kit 11 4 230 in special tool 11 7 380.

Screw in adjustment screw on tensioning rail, but do not tighten yet.

Scheme 229

Note. The continuity test with the multimeter described in the following is not possible on the M62 B46 because of the different design of the camshaft adjustment unit. The remaining procedure is identical.

Connect a commercially available multimeter to a contact pin on camshaft adjustment unit and to the screw connection on oil line on cylinder bank 5 to 8.

Set multimeter to acoustic continuity test.

Scheme 230

Attach special tool 11 6 440 to camshaft adjustment unit on cylinder bank 5 to 8 and move at 40 N.m to left-hand stop.

Check left-hand stop of camshaft adjustment unit with acoustic continuity test on multimeter.

Scheme 231

Note. Rotating the camshaft adjustment unit at 40 N.m to the left-hand stop ensures that the end position is reached and there is no longer an "oil cushion" before the left-hand stop of the camshaft adjustment unit. In the camshaft adjustment unit, there are three contacts which are closed when the unit is at the left-hand stop. During the acoustic continuity test with the multimeter, a sound signal can be heard when the camshaft adjustment unit is at the left-hand stop.

Tighten screw connection (2) of inlet camshaft on cylinder bank 5 to 8 to an initial torque of 15 N.m and then slacken off again by a 1/4 turn.

Scheme 232

Tighten screw connection (1) of exhaust camshaft on cylinder bank 5 to 8 to an initial torque of 15 N.m and then slacken off again by a 1/4 turn.

Scheme 233

Note. The continuity test with the multimeter described in the following is not possible on the M62 B46 because of the different design of the camshaft adjustment unit. The remaining procedure is identical.

Connect a commercially available multimeter to a contact pin on camshaft adjustment unit and to the screw connection on oil line on cylinder bank 1 to 4.

Set multimeter to acoustic continuity test.

Scheme 234

Attach special tool 11 6 440 to camshaft adjustment unit on cylinder bank 1 to 4 and move at 40 N.m to left-hand stop.

Check left-hand stop of camshaft adjustment unit with acoustic continuity test on multimeter.

Scheme 235

Tighten screw connection (2) of inlet camshaft on cylinder bank 1 to 4 to an initial torque of 15 N.m and then slacken off again by a 1/4 turn.

Scheme 236

Tighten screw connection (1) of exhaust camshaft on cylinder bank 1 to 4 to an initial torque of 15 N.m and then slacken off again by a 1/4 turn.

Scheme 237

Pretension tensioning rail by turning adjusting screw on special tool 11 4 230 with special tool 00 9 250 to 0.7 N.m.

Note. If installation tolerance is unfavorable, attach special tool 00 9 250 from underside.

Scheme 238

Note. Pretensioning the timing chain moves the camshaft adjustment unit and the unit must therefore be reset to the left-hand stop.

Attach special tool 11 6 440 to camshaft adjustment unit on cylinder bank 5 to 8 and move at 40 N.m to left-hand stop.

Check left-hand stop of camshaft adjustment unit with acoustic continuity test on multimeter.

Scheme 239

When tightening down camshaft screw connection grip camshaft at hexagon head.

Scheme 240

Tighten down screw connection (2) of inlet camshaft on cylinder bank 5 to 8.

Tightening torque, see 11 36 14AZ in ENGINE - TIGHTENING TORQUES

Scheme 241

When tightening down camshaft screw connection grip camshaft at hexagon head.

Tighten down screw connection (1) of exhaust camshaft on cylinder bank 5 to 8.

Tightening torque, see 11 36 13AZ in ENGINE - TIGHTENING TORQUES

Scheme 242

Attach special tool 11 6 440 to camshaft adjustment unit on cylinder bank 1 to 4 and move at 40 N.m to left-hand stop.

Check left-hand stop of camshaft adjustment unit with acoustic continuity test on multimeter.

Scheme 243

When tightening down camshaft screw connection grip camshaft at hexagon head.

Tighten down screw connection (2) of inlet camshaft on cylinder bank 1 to 4.

For tightening torque, see 11 36 14AZ in ENGINE - TIGHTENING TORQUES

Scheme 244

When tightening down camshaft screw connection grip camshaft at hexagon head.

Tighten down screw connection (1) of exhaust camshaft on cylinder bank 1 to 4.

Tightening torque, see 11 36 13AZ in ENGINE - TIGHTENING TORQUES

Scheme 245

Attach sensor gear (2) to cylinder bank 1 to 4.

Scheme 246

Fit nut (1) of sensor gear screw connection on cylinder bank 1 to 4 and initially tighten without play, but do not tighten down yet.

Scheme 247

Note. Special tool kit 11 6 450 comprises: Special tool 11 6 451 for cylinder bank 1 to 4 Special tool 11 6 452 for cylinder bank 5 to 8

Align locating bore (1) on sensor gear of cylinder bank 1 to 4 to positioning pin on special tool 11 6 451. Fit special tool 11 6 451, insert screws and initially tighten without play. Press special tool 11 6 451 downwards and align to cylinder head. Tighten down special tool 11 6 451.

Scheme 248

Tighten down nut (1) on sensor gear screw connection.

Tightening torque, see 11 36 15AZ ENGINE - TIGHTENING TORQUES

Scheme 249

Remove special tool 11 6 451 from right cylinder head on cylinder bank 1 to 4.

Scheme 250

Attach sensor gear (2) to cylinder bank 5 to 8.

Scheme 251

Fit nut (1) of sensor gear screw connection on cylinder bank 5 to 8 and initially tighten without play, but do not tighten down yet.

Scheme 252

Note. Special tool kit 11 6 450 comprises: Special tool 11 6 451 for cylinder bank 1 to 4 Special tool 11 6 452 for cylinder bank 5 to 8

Align locating bore (1) on sensor gear of cylinder bank 5 to 8 to positioning pin on special tool 11 6 452. Fit special tool 11 6 452, insert screws and initially tighten without play. Press special tool 11 6 452 downwards and align to cylinder head. Tighten down special tool 11 6 452.

Scheme 253

Tighten down nut (1) on sensor gear screw connection.

Tightening torque, see 11 36 15AZ in ENGINE - TIGHTENING TORQUES

Scheme 254

Remove special tool 11 6 452 from left cylinder head on cylinder bank 5 to 8.

Scheme 255

Remove special tools 11 2 444 / 11 2 443 / 11 2 445 / 11 2 441.

Scheme 256

Remove special tools 11 2 444 / 11 2 443 / 11 2 442 / 11 2 446.

Scheme 257

Relieve tension on special tool 11 4 230.

Remove special tool 11 7 380 from right cylinder head on cylinder bank 1 to 4.

Scheme 258

Install oil lines on left and right of cylinder head.

Scheme 259

Install both timing case covers at top.

Install chain tensioning piston.

Install both cylinder head covers.

Remove special tool 11 5 180.

Assemble engine.

Scheme 260

11 31 011 Replacing left camshafts (M62 VANOS from 9/98)

Special tools required

1. 11 2 300
2. 11 2 442
3. 11 2 443
4. 11 2 444
5. 11 2 446
6. 11 5 180

(if necessary inlet or exhaust side)

Cylinder bank 5 to 8

Unscrew and remove splash guard.

Remove both cylinder head covers.

Remove all spark plugs. See 12 12 011 REPLACING ALL SPARK PLUGS

Removal of camshafts is described separately from installation.

Remove chain tensioning piston.

Remove timing case covers at top left and top right.

Remove left camshaft adjustment unit.

Remove distributor on left camshaft adjustment unit.

Pull special tool 11 5 180 back until flywheel is no longer secured in position.

Scheme 261

Lift timing chain and hold under tension.

Note. Note markings!

Crank engine against direction of rotation at central bolt into 45° before TDC position.

Scheme 262

Remove special tools 11 2 444 / 11 2 443 / 11 2 442 / 11 2 446.

Scheme 263

Scheme 264

Rotate exhaust camshaft at hexagon head until exhaust cam on cylinder 6 is facing upwards.

Rotate inlet camshaft at hexagon head until inlet cam on cylinder 8 is facing upwards.

Note. The camshafts are now in the removal position.

Scheme 265

Release bearing caps of exhaust and inlet camshafts on cylinder bank 5 to 8 in 1/2 turn increments uniformly from outside to inside.

Remove bearing covers on cylinder bank 5 to 8 and place to one side in order.

Lift out camshafts.

Scheme 266

Installation of camshafts is described separately from removal.

Insert exhaust and inlet camshafts on cylinder bank 5 to 8.

Rotate exhaust camshaft until exhaust cam on cylinder 6 is facing upwards.

Rotate inlet camshaft until inlet cam on cylinder 8 is facing upwards.

Scheme 267

Fit bearing caps.

Exhaust camshaft bearing caps are marked A1 to A5 from inlet side.

Inlet camshaft bearing caps are marked E1 to E5 from inlet side.

Scheme 268

Tighten down bearing caps of camshafts on cylinder bank 5 to 8 in 1/2 turn increments uniformly from inside to outside.

Tightening torque, see 11 31 1AZ in ENGINE - TIGHTENING TORQUES

Scheme 269

Rotate camshafts until camshaft designation points upwards.

Scheme 270

Attach special tool 11 2 446 / 11 2 442 to camshafts, cylinder bank 5 to 8.

Scheme 271

If necessary, machine open-end wrench accordingly.

Align inlet and exhaust camshafts with open-end wrench in such a way that special tools 11 2 446 / 11 2 442 rest without a gap on cylinder head.

Scheme 272

Attach special tool 11 2 443 to special tool 11 2 446 / 11 2 442 and secure with special tool 11 2 444 via spark plug thread.

Scheme 273

Crank engine from 45° before TDC position in direction of rotation up to TDC position.

Hold crankshaft in TDC position with special tool 11 5 180.

Scheme 274

Install distributor on left camshaft adjustment unit.

Install left camshaft adjustment unit.

Install timing case covers at top left and top right.

Install chain tensioning piston.

Install both cylinder head covers.

Assemble engine.

11 31 015 Replacing right camshaft (M62 VANOS from 9/98)

Special tools required

1. 11 2 300
2. 11 2 441
3. 11 2 443
4. 11 2 444
5. 11 2 445
6. 11 5 180

(if necessary inlet or exhaust side)

Cylinder bank 1 to 4

Unscrew and remove splash guard.

Remove both cylinder head covers.

Remove all spark plugs. See 12 12 011 REPLACING ALL SPARK PLUGS

Removal of camshafts is described separately from installation.

Remove chain tensioning piston.

Remove timing case covers at top left and top right.

Remove right camshaft adjustment unit.

Remove distributor on right camshaft adjustment unit.

Pull special tool 11 5 180 back until flywheel is no longer secured in position.

Scheme 275

Lift timing chain and hold under tension.

Note. Note markings!

Crank engine against direction of rotation at central bolt into 45° before TDC position.

Scheme 276

Note. Grip inlet camshaft 1 to 4 with open-end wrench when removing special tool 11 2 441.

Scheme 277

Remove special tools 11 2 444 / 11 2 443 / 11 2 441 / 11 2 445.

Scheme 278

Scheme 279

Rotate exhaust camshaft at hexagon head until exhaust cam on cylinder 2 is facing upwards.

Rotate inlet camshaft at hexagon head until inlet cam on cylinder 1 is facing upwards.

Note. The camshafts are now in the removal position.

Scheme 280

Release bearing caps of exhaust and inlet camshafts on cylinder bank 1 to 4 in 1/2 turn increments uniformly from outside to inside.

Remove bearing covers on cylinder bank 1 to 4 and place to one side in order.

Lift out camshafts.

Scheme 281

Installation of camshafts is described separately from removal.

Insert exhaust and inlet camshafts on cylinder bank 1 to 4.

Rotate exhaust camshaft until exhaust cam on cylinder 2 is facing upwards.

Rotate inlet camshaft until inlet cam on cylinder 1 is facing upwards.

Scheme 282

Fit bearing caps.

Exhaust camshaft bearing caps are marked A1 to A5 from inlet side.

Inlet camshaft bearing caps are marked E1 to E5 from inlet side.

Scheme 283

Tighten down bearing caps of camshafts on cylinder bank 1 to 4 in 1/2 turn increments uniformly from inside to outside.

Tightening torque, 11 31 1AZ. ENGINE - TIGHTENING TORQUES

Scheme 284

Rotate camshafts until camshaft designation points upwards.

Scheme 285

Attach special tool 11 2 445 / 11 2 441 to camshafts, cylinder bank 1 to 4.

Scheme 286

Align inlet and exhaust camshafts with open-end wrench in such a way that special tools 11 2 445 / 11 2 441 rest without a gap on cylinder head.

Scheme 287

Attach special tool 11 2 443 to special tool 11 2 445 / 11 2 441 and secure with special tool 11 2 444 via spark plug thread.

Scheme 288

Crank engine from 45° before TDC position in direction of rotation up to TDC position.

Hold crankshaft in TDC position with special tool 11 5 180.

Scheme 289

Install distributor on right camshaft adjustment unit.

Install right camshaft adjustment unit.

Install timing case covers at top left and top right.

Install chain tensioning piston.

Install both cylinder head covers.

Assemble engine.

11 31 051 Replacing timing chain (M62 VANOS from 9/98)

Special tools required

1. 00 9 250
2. 11 2 300
3. 11 2 441
4. 11 2 442
5. 11 2 443
6. 11 2 444
7. 11 2 445
8. 11 2 446
9. 11 4 230
10. 11 4 231
11. 11 4 232
12. 11 5 180
13. 11 6 440
14. 11 6 450
15. 11 6 451
16. 11 6 452
17. 11 7 380

Removal of timing chain is described separately from installation. Assembly sequence for removal and installation is different.

Remove spark plugs. See 12 12 011 REPLACING ALL SPARK PLUGS

Remove both cylinder head covers.

Note. In firing TDC position, the inlet camshaft 1 to 4 rotates in the teeth of the camshaft adjustment unit.

Scheme 290

Remove oil lines on left and right of cylinder head.

Scheme 291

Remove vibration damper.

Slacken central screw of hub for vibration damper. This task is described in the section "Removing and installing hub for vibration damper".

Rotate engine at slackened central bolt in direction of rotation until the first cylinder is in TDC firing position.

Scheme 292

Note. When the first cylinder is in TDC firing position, the camshaft markings face upwards.

Scheme 293

Secure crankshaft in TDC position with special tool 11 5 180.

Scheme 294

Remove chain tensioning piston.

Remove both timing case covers at top.

Release nut (1) on sensor gear screw connection on cylinder bank 1 to 4.

Scheme 295

Remove sensor gear (2) on cylinder bank 1 to 4.

Scheme 296

Release nut (1) on sensor gear screw connection on cylinder bank 5 to 8.

Scheme 297

Remove sensor gear (2) on cylinder bank 5 to 8.

Scheme 298

When releasing camshaft screw connection grip camshaft at hexagon head.

Scheme 299

Slacken screw connection (1) of exhaust camshaft on cylinder bank 5 to 8 by approx. a half turn.

Scheme 300

When releasing camshaft screw connection grip camshaft at hexagon head.

Slacken screw connection (1) of exhaust camshaft on cylinder bank 1 to 4 by approx. a half turn.

Scheme 301

When releasing camshaft screw connection grip camshaft at hexagon head.

Slacken screw connection (2) of inlet camshaft on cylinder bank 5 to 8 by approx. a half turn.

Scheme 302

When releasing camshaft screw connection grip camshaft at hexagon head.

Slacken screw connection (2) of inlet camshaft on cylinder bank 1 to 4 by approx. a half turn.

Scheme 303

Align camshafts.

Attach special tool 11 2 445 / 11 2 441 to camshafts, cylinder bank 1 to 4.

Scheme 304

Attach special tool 11 2 443 to special tool 11 2 445 / 11 2 441 and secure with special tool 11 2 444 via spark plug thread.

Scheme 305

Align camshafts.

Attach special tool 11 2 446 / 11 2 442 to camshafts, cylinder bank 5 to 8.

Scheme 306

Attach special tool 11 2 443 to special tool 11 2 446 / 11 2 442 and secure with special tool 11 2 444 via spark plug thread.

Scheme 307

Remove slackened central bolt and remove hub for vibration damper.

Remove special tool 11 5 180.

Scheme 308

Remove upper oil sump section.

Remove water pump with thermostat housing.

Remove lower timing case cover.

Release retaining screw on tensioning rail.

Open plastic strap (1).

Remove tensioning rail with oil guide.

Scheme 309

Note. Engines in E53 (X5) have an external oil separator. Screw (1) is not fitted.

Release screw (1) for oil separator.

Release retaining screw (2) for guide rail.

Scheme 310

Using a small screwdriver, carefully push back retaining lug on guide rail and detach guide rail.

Scheme 311

Feed timing chain (1) out of camshaft adjustment unit and remove.

Scheme 312

Note. Engines in E53 (X5) have an external oil separator. Grub screw (1) is not fitted.

If necessary, remove reversing rail.

Unfasten grub screw (1).

Release retaining screws (2 and 3) on reversing rail and remove reversing rail.

Scheme 313

Installation of timing chain is described separately from removal. Assembly sequence for removal and installation is different.

Check guide, reversing and tensioning rails, replace if necessary.

Note. There is a small bore in the throttle ring (1). Check throttle ring (1), replace if necessary.

1. Insert throttle ring (1) in reversing rail
2. Replace O-ring (2) and insert in reversing rail
3. Replace O-ring (3)

Coat O-ring (3) with oil as lubricant.

Scheme 314

Install reversing rail and insert screws (2 and 3).

Note. Screws (2) with M6 thread. Screws (3) with M7 thread.

Tighten screws (2 and 3).

Tightening torque for screws (2 and 3), see 11 31 10AZ in ENGINE - TIGHTENING TORQUES

Scheme 315

Note. Engines in E53 (X5) have an external oil separator. Grub screw (1) and angle section are not fitted.

Replace grub screw (1).

Insert grub screw only until it makes contact with angle section (1) without play, do not tighten down.

Note. The grub screw (1) secures the angle bracket in the cylinder head.

Scheme 316

Note. The position of the camshaft adjustment unit when fitting and feeding on the timing chain is not assigned and can be freely selected.

Install timing chain over reversing rail, camshaft adjustment unit of cylinder bank 5 to 8 and over crankshaft sprocket wheel.

Note. Install timing chain inside screw-in pin (1).

Scheme 317

Feed timing chain (1) onto camshaft adjustment unit of cylinder bank 1 to 4.

Scheme 318

Raise timing chain slightly in area of guide rail.

Slide guide rail over guide pin until retaining lug can be heard snapping into place on lower guide pin.

Align timing chain to guide rail.

Scheme 319

Note. Engines in E53 (X5) have an external oil separator. Screw (1) is not fitted.

Insert screws (1 and 2).

Tighten screw (2).

Tighten down screw (1) for oil separator.

Scheme 320

Replace O-ring (1).

Install oil guide for bow cover in the pivot rail.

Insert screw on tensioning rail.

Scheme 321

Press bow cover against the timing chain. Secure bow cover with a plastic strap (1).

Tighten down screw on tensioning rail.

Scheme 322

Install timing case cover at bottom.

Install upper oil sump section.

Scheme 323

Secure crankshaft in TDC position with special tool 11 5 180.

Scheme 324

Fit special tool 11 7 380 to right cylinder head on cylinder bank 1 to 4.

Scheme 325

Note. The special tool kit 11 3 390 can no longer be fitted in the E53 (X5) with M62 engine due to the altered space conditions. With the market launch of the E53 (X5) with M62 engine, the special tool kit 11 3 390 is dropped. The shorter special tool kit 11 4 230 comprising special tools 11 4 231 and 11 4 232 replaces the special tool kit 11 3 390.

Scheme 326

Insert special tool 11 4 230 in special tool 11 7 380.

Screw in adjustment screw on tensioning rail, but do not tighten yet.

Scheme 327

Note. The continuity test with the multimeter described in the following is not possible on the M62 B46 because of the different design of the camshaft adjustment unit. The remaining procedure is identical.

Connect a commercially available multimeter to a contact pin on camshaft adjustment unit and to the screw connection on oil line on cylinder bank 5 to 8.

Set multimeter to acoustic continuity test.

Scheme 328

Attach special tool 11 6 440 to camshaft adjustment unit on cylinder bank 5 to 8 and move at 40 N.m to left-hand stop.

Check left-hand stop of camshaft adjustment unit with acoustic continuity test on multimeter.

Scheme 329

Note. Rotating the camshaft adjustment unit at 40 N.m to the left-hand stop ensures that the end position is reached and there is no longer an "oil cushion" before the left-hand stop of the camshaft adjustment unit. In the camshaft adjustment unit, there are three contacts which are closed when the unit is at the left-hand stop. During the acoustic continuity test with the multimeter, a sound signal can be heard when the camshaft adjustment unit is at the left-hand stop.

Tighten screw connection (2) of inlet camshaft on cylinder bank 5 to 8 to an initial torque of 15 N.m and then slacken off again by a 1/4 turn.

Scheme 330

Tighten screw connection (1) of exhaust camshaft on cylinder bank 5 to 8 to an initial torque of 15 N.m and then slacken off again by a 1/4 turn.

Scheme 331

Note. The continuity test with the multimeter described in the following is not possible on the M62 B46 because of the different design of the camshaft adjustment unit. The remaining procedure is identical.

Connect a commercially available multimeter to a contact pin on camshaft adjustment unit and to the screw connection on oil line on cylinder bank 1 to 4.

Set multimeter to acoustic continuity test.

Scheme 332

Attach special tool 11 6 440 to camshaft adjustment unit on cylinder bank 1 to 4 and move at 40 N.m to left-hand stop.

Check left-hand stop of camshaft adjustment unit with acoustic continuity test on multimeter.

Scheme 333

Tighten screw connection (2) of inlet camshaft on cylinder bank 1 to 4 to an initial torque of 15 N.m and then slacken off again by a 1/4 turn.

Scheme 334

Tighten screw connection (1) of exhaust camshaft on cylinder bank 1 to 4 to an initial torque of 15 N.m and then slacken off again by a 1/4 turn.

Scheme 335

Pretension tensioning rail by turning adjusting screw on special tool 11 4 230 with special tool 00 9 250 to 0.7 N.m.

Note. If installation tolerance is unfavorable, attach special tool 00 9 250 from underside.

Scheme 336

Note. Pretensioning the timing chain moves the camshaft adjustment unit and the unit must therefore be reset to the left-hand stop.

Attach special tool 11 6 440 to camshaft adjustment unit on cylinder bank 5 to 8 and move at 40 N.m to left-hand stop.

Check left-hand stop of camshaft adjustment unit with acoustic continuity test on multimeter.

Scheme 337

If necessary, machine open-end wrench accordingly.

When tightening down camshaft screw connection grip camshaft at hexagon head.

Scheme 338

Tighten down screw connection (2) of inlet camshaft on cylinder bank 5 to 8.

For tightening torque, see 11 36 14AZ in ENGINE - TIGHTENING TORQUES

Scheme 339

When tightening down camshaft screw connection grip camshaft at hexagon head.

Tighten down screw connection (1) of exhaust camshaft on cylinder bank 5 to 8.

For tightening torque, see 11 36 13AZ in ENGINE - TIGHTENING TORQUES

Scheme 340

Note. The continuity test with the multimeter described in the following is not possible on the M62 B46 because of the different design of the camshaft adjustment unit. The remaining procedure is identical.

Attach special tool 11 6 440 to camshaft adjustment unit on cylinder bank 1 to 4 and move at 40 N.m to left-hand stop.

Check left-hand stop of camshaft adjustment unit with acoustic continuity test on multimeter.

Scheme 341

When tightening down camshaft screw connection grip camshaft at hexagon head.

Tighten down screw connection (2) of inlet camshaft on cylinder bank 1 to 4.

For tightening torque, see 11 36 14AZ in ENGINE - TIGHTENING TORQUES

Scheme 342

When tightening down camshaft screw connection grip camshaft at hexagon head.

Tighten down screw connection (1) of exhaust camshaft on cylinder bank 1 to 4.

For tightening torque, see 11 36 13AZ in ENGINE - TIGHTENING TORQUES

Scheme 343

Attach sensor gear (2) to cylinder bank 1 to 4.

Scheme 344

Fit nut (1) of sensor gear screw connection on cylinder bank 1 to 4 and initially tighten without play, but do not tighten down yet.

Scheme 345

Note. Special tool kit 11 6 450 comprises: Special tool 11 6 451 for cylinder bank 1 to 4 Special tool 11 6 452 for cylinder bank 5 to 8

Align locating bore (1) on sensor gear of cylinder bank 1 to 4 to positioning pin on special tool 11 6 451. Fit special tool 11 6 451, insert screws and initially tighten without play. Press special tool 11 6 451 downwards and align to cylinder head. Tighten down special tool 11 6 451.

Scheme 346

Tighten down nut (1) on sensor gear screw connection.

For tightening torque, see 11 36 15AZ in ENGINE - TIGHTENING TORQUES

Scheme 347

Remove special tool 11 6 451 from right cylinder head on cylinder bank 1 to 4.

Scheme 348

Attach sensor gear (2) to cylinder bank 5 to 8.

Scheme 349

Fit nut (1) of sensor gear screw connection on cylinder bank 5 to 8 and initially tighten without play, but do not tighten down yet.

Scheme 350

Note. Special tool kit 11 6 450 comprises: Special tool 11 6 451 for cylinder bank 1 to 4 Special tool 11 6 452 for cylinder bank 5 to 8

Align locating bore (1) on sensor gear of cylinder bank 5 to 8 to positioning pin on special tool 11 6 452. Fit special tool 11 6 452, insert screws and initially tighten without play. Press special tool 11 6 452 downwards and align to cylinder head. Tighten down special tool 11 6 452.

Scheme 351

Tighten down nut (1) on sensor gear screw connection.

Tightening torque, 11 36 15AZ. ENGINE - TIGHTENING TORQUES

Scheme 352

Remove special tool 11 6 452 from left cylinder head on cylinder bank 5 to 8.

Scheme 353

Remove special tools 11 2 444 / 11 2 443 / 11 2 445 / 11 2 441.

Scheme 354

Remove special tools 11 2 444 / 11 2 443 / 11 2 442 / 11 2 446.

Scheme 355

Relieve tension on special tool 11 4 230.

Remove special tool 11 7 380 from right cylinder head on cylinder bank 1 to 4.

Scheme 356

Install oil lines on left and right of cylinder head.

Scheme 357

Install both timing case covers at top.

Install chain tensioning piston.

Remove special tool 11 5 180.

Assemble engine.

Scheme 358

11 31 090 Installing and removing / replacing piston for chain tensioner (M62)

Remove upper section of suction filter housing style with mass air flow sensor.

Remove lower section of suction filter housing.

Scheme 359

Unfasten screw connection.

Replace sealing ring.

For tightening torque, refer to 11 31 7AZ in ENGINE - TIGHTENING TORQUES

Scheme 360

Remove screw connection and piston for chain tensioner.

Scheme 361

Arrangement of Components

1. Screw plug
2. Sealing ring
3. Sleeve
4. Recoil spring
5. Hydraulic piston

Tapered end of recoil spring (4) faces hydraulic piston (5).

Scheme 362

To simplify assembly, drain oil chamber between sleeve and hydraulic piston.

Scheme 363

11 34 552 Removing and installing / replacing all valves (M62)

(cylinder head removed)

Preliminary work is described in section on dismantling and assembling the cylinder head, refer to 11 12 503 DISMANTLING AND REASSEMBLING CYLINDER HEAD (M62)

Replacing valve stem seals, refer to 11 34 560 REPLACING ALL VALVE STEM SEALS (M62, S62)

Remove valves from cylinder head.

If necessary, check valve guide for wear, refer to 11 12 595 CHECKING A VALVE GUIDE FOR WEAR (M62, S62)

If necessary, ream the valve guide, refer to 11 12 600 REAMING A VALVE GUIDE (M62, S62)

If necessary, rework valve seat, refer to 11 12 527 REMACHINING A VALVE SEAT (M62, S62)

Installation sequence

Scheme 364

1. Valve
2. Valve-stem seal
3. Lower plate spring
4. Valve spring
5. Upper plate spring
6. Valve tapers

11 34 560 Replacing all valve stem seals (M62, S62)

(cylinder head removed)

Preliminary tasks are described in disassembly and assembly of cylinder head, refer to 11 12 503 DISMANTLING AND REASSEMBLING CYLINDER HEAD (M62) .

Scheme 365

Remove valve stem seal with special tool 11 1 480.

Scheme 366

Lubricate valve stem with oil and insert valve. Fit special tool 11 1 960. Coat new valve stem seal (1) with oil and install.

Scheme 367

Press-fit valve stem seal firmly home by hand using special tool 11 1 200.

Remove special tool 11 1 960.

Scheme 368

11 34 715 Replacing all valve springs (M62)

(cylinder head removed)

Preliminary tasks are described in disassembly and assembly of cylinder head, refer to 11 12 503 DISMANTLING AND REASSEMBLING CYLINDER HEAD (M62) .

Remove bucket tappet with special tool 11 3 250.

Worn bucket tappets may only be reused in the same tappet bore.

Scheme 369

Arrange bucket tappets by cylinder and place on special tool 11 3 030 in correct order.

Scheme 370

Fit special tool 11 0 211 from below in special tool 11 1 065 and secure with special tool 11 1 045.

Scheme 371

Align special tool 11 0 345 in direction of valve shaft and select appropriate groove in special tool 11 0 342.

Scheme 372

Press down valve spring on spring cap, top, and remove valve keys.

Remove valve spring and plate spring.

Scheme 373

Arrangement

Scheme 374

1. Valve
2. Valve-stem seal
3. Lower plate spring
4. Valve spring
5. Upper plate spring
6. Valve tapers

11 31 010 Adjusting camshaft timing (M62 VANOS from 9/98)

Special tools required

1. 00 9 250
2. 11 2 441
3. 11 2 442
4. 11 2 443
5. 11 2 444
6. 11 2 445
7. 11 2 446
8. 11 4 230
9. 11 4 231
10. 11 4 232
11. 11 5 180
12. 11 6 440
13. 11 6 450
14. 11 6 451
15. 11 6 452
16. 11 7 380

Remove intake filter housing with air-mass flow sensor.

Remove fan impeller with fan clutch and fan cowl.

Remove both cylinder head covers.

Remove spark plugs. See 12 12 011 REPLACING ALL SPARK PLUGS

Note. In firing TDC position, the inlet camshaft 1 to 4 rotates in the teeth of the camshaft adjustment unit.

Scheme 375

Remove oil lines on left and right of cylinder head.

Scheme 376

Turn engine in direction of rotation as far as TDC firing position of first cylinder.

Scheme 377

Secure crankshaft with special tool 11 5 180 in TDC firing position of first cylinder.

Scheme 378

Remove chain tensioning piston.

Remove both timing case covers at top.

Release nut (1) on sensor gear screw connection on cylinder bank 1 to 4.

Scheme 379

Remove sensor gear (2) on cylinder bank 1 to 4.

Scheme 380

Release nut (1) on sensor gear screw connection on cylinder bank 5 to 8.

Scheme 381

Remove sensor gear (2) on cylinder bank 5 to 8.

Scheme 382

When releasing camshaft screw connection grip camshaft at hexagon head.

Scheme 383

When releasing camshaft screw connection grip camshaft at hexagon head.

Slacken screw connection (1) of exhaust camshaft on cylinder bank 5 to 8 by approx. a half turn.

Scheme 384

When releasing camshaft screw connection grip camshaft at hexagon head.

Slacken screw connection (1) of exhaust camshaft on cylinder bank 1 to 4 by approx. a half turn.

Scheme 385

When releasing camshaft screw connection grip camshaft at hexagon head.

Slacken screw connection (2) of inlet camshaft on cylinder bank 5 to 8 by approx. a half turn.

Scheme 386

When releasing camshaft screw connection grip camshaft at hexagon head.

Slacken screw connection (2) of inlet camshaft on cylinder bank 1 to 4 by approx. a half turn.

Scheme 387

Align camshafts.

Attach special tool 11 2 445 / 11 2 441 to camshafts, cylinder bank 1 to 4.

Scheme 388

Attach special tool 11 2 443 to special tool 11 2 445 / 11 2 441 and secure with special tool 11 2 444 via spark plug thread.

Scheme 389

Align camshafts.

Attach special tool 11 2 446 / 11 2 442 to camshafts, cylinder bank 5 to 8.

Scheme 390

Attach special tool 11 2 443 to special tool 11 2 446 / 11 2 442 and secure with special tool 11 2 444 via spark plug thread.

Scheme 391

Fit special tool 11 7 380 to right cylinder head on cylinder bank 1 to 4.

Scheme 392

Note. The special tool kit 11 3 390 can no longer be fitted in the E53 (X5) with M62 engine due to the altered space conditions. With the market launch of the E53 (X5) with M62 engine, the special tool kit 11 3 390 is dropped. The shorter special tool kit 11 4 230 comprising special tools 11 4 231 and 11 4 232 replaces the special tool kit 11 3 390.

Scheme 393

Insert special tool kit 11 4 230 in special tool 11 7 380.

Screw in adjustment screw on tensioning rail, but do not tighten yet.

Scheme 394

Note. The continuity test with the multimeter described in the following is not possible on the M62 B46 because of the different design of the camshaft adjustment unit. The remaining procedure is identical.

Connect a commercially available multimeter to a contact pin on camshaft adjustment unit and to the screw connection on oil line on cylinder bank 5 to 8.

Set multimeter to acoustic continuity test.

Scheme 395

Attach special tool 11 6 440 to camshaft adjustment unit on cylinder bank 5 to 8 and move at 40 N.m to left-hand stop.

Check left-hand stop of camshaft adjustment unit with acoustic continuity test on multimeter.

Scheme 396

Note. Rotating the camshaft adjustment unit at 40 N.m to the left-hand stop ensures that the end position is reached and there is no longer an "oil cushion" before the left-hand stop of the camshaft adjustment unit. In the camshaft adjustment unit, there are three contacts which are closed when the unit is at the left-hand stop. During the acoustic continuity test with the multimeter, a sound signal can be heard when the camshaft adjustment unit is at the left-hand stop.

Tighten screw connection (2) of inlet camshaft on cylinder bank 5 to 8 to an initial torque of 15 N.m and then slacken off again by a 1/4 turn.

Scheme 397

Tighten screw connection (1) of exhaust camshaft on cylinder bank 5 to 8 to an initial torque of 15 N.m and then slacken off again by a 1/4 turn.

Scheme 398

Note. The continuity test with the multimeter described in the following is not possible on the M62 B46 because of the different design of the camshaft adjustment unit. The remaining procedure is identical.

Connect a commercially available multimeter to a contact pin on camshaft adjustment unit and to the screw connection on oil line on cylinder bank 1 to 4.

Set multimeter to acoustic continuity test.

Scheme 399

Attach special tool 11 6 440 to camshaft adjustment unit on cylinder bank 1 to 4 and move at 40 N.m to left-hand stop.

Check left-hand stop of camshaft adjustment unit with acoustic continuity test on multimeter.

Scheme 400

Tighten screw connection (2) of inlet camshaft on cylinder bank 1 to 4 to an initial torque of 15 N.m and then slacken off again by a 1/4 turn.

Scheme 401

Tighten screw connection (1) of exhaust camshaft on cylinder bank 1 to 4 to an initial torque of 15 N.m and then slacken off again by a 1/4 turn.

Scheme 402

Pretension tensioning rail by turning adjusting screw on special tool 11 4 230 with special tool 00 9 250 to 0.7 N.m.

Note. If installation tolerance is unfavorable, attach special tool 00 9 250 from underside.

Scheme 403

Note. Pretensioning the timing chain moves the camshaft adjustment unit and the unit must therefore be reset to the left-hand stop.

Attach special tool 11 6 440 to camshaft adjustment unit on cylinder bank 5 to 8 and move at 40 N.m to left-hand stop.

Check left-hand stop of camshaft adjustment unit with acoustic continuity test on multimeter.

Scheme 404

When tightening down camshaft screw connection grip camshaft at hexagon head.

Scheme 405

Tighten down screw connection (2) of inlet camshaft on cylinder bank 5 to 8.

Tightening torque, 11 36 14AZ. ENGINE - TIGHTENING TORQUES

Scheme 406

When tightening down camshaft screw connection grip camshaft at hexagon head.

Tighten down screw connection (1) of exhaust camshaft on cylinder bank 5 to 8.

Tightening torque, 11 36 13AZ. ENGINE - TIGHTENING TORQUES

Scheme 407

Attach special tool 11 6 440 to camshaft adjustment unit on cylinder bank 1 to 4 and move at 40 N.m to left-hand stop.

Check left-hand stop of camshaft adjustment unit with acoustic continuity test on multimeter.

Scheme 408

When tightening down camshaft screw connection grip camshaft at hexagon head.

Tighten down screw connection (2) of inlet camshaft on cylinder bank 1 to 4.

Tightening torque, 11 36 14AZ. ENGINE - TIGHTENING TORQUES

Scheme 409

When tightening down camshaft screw connection grip camshaft at hexagon head.

Tighten down screw connection (1) of exhaust camshaft on cylinder bank 1 to 4.

Tightening torque, 11 36 13AZ. ENGINE - TIGHTENING TORQUES

Scheme 410

Attach sensor gear (2) to cylinder bank 1 to 4.

Scheme 411

Fit nut (1) of sensor gear screw connection on cylinder bank 1 to 4 and initially tighten without play, but do not tighten down yet.

Scheme 412

Note. Special tool kit 11 6 450 comprises: Special tool 11 6 451 for cylinder bank 1 to 4 Special tool 11 6 452 for cylinder bank 5 to 8

Align locating bore (1) on sensor gear of cylinder bank 1 to 4 to positioning pin on special tool 11 6 451. Fit special tool 11 6 451, insert screws and initially tighten without play. Press special tool 11 6 451 downwards and align to cylinder head. Tighten down special tool 11 6 451.

Scheme 413

Tighten down nut (1) on sensor gear screw connection.

Tightening torque, 11 36 15AZ. ENGINE - TIGHTENING TORQUES

Scheme 414

Remove special tool 11 6 451 from right cylinder head on cylinder bank 1 to 4.

Scheme 415

Attach sensor gear (2) to cylinder bank 5 to 8.

Scheme 416

Fit nut (1) of sensor gear screw connection on cylinder bank 5 to 8 and initially tighten without play, but do not tighten down yet.

Scheme 417

Note. Special tool kit 11 6 450 comprises: Special tool 11 6 451 for cylinder bank 1 to 4 Special tool 11 6 452 for cylinder bank 5 to 8

Align locating bore (1) on sensor gear of cylinder bank 5 to 8 to positioning pin on special tool 11 6 452. Fit special tool 11 6 452, insert screws and initially tighten without play. Press special tool 11 6 452 downwards and align to cylinder head. Tighten down special tool 11 6 452.

Scheme 418

Tighten down nut (1) on sensor gear screw connection.

Tightening torque, 11 36 15AZ ENGINE - TIGHTENING TORQUES

Scheme 419

Remove special tool 11 6 452 from left cylinder head on cylinder bank 5 to 8.

Scheme 420

Remove special tools 11 2 444 / 11 2 443 / 11 2 445 / 11 2 441.

Scheme 421

Remove special tools 11 2 444 / 11 2 443 / 11 2 442 / 11 2 446.

Scheme 422

Relieve tension on special tool 11 4 230.

Remove special tool 11 7 380 from right cylinder head on cylinder bank 1 to 4.

Scheme 423

Install oil lines on left and right of cylinder head.

Scheme 424

Install both timing case covers at top.

Install chain tensioning piston.

Install both cylinder head covers.

Remove special tool 11 5 180.

Assemble engine.

Scheme 425

11 36 585 Removing and installing/replacing solenoid valve of camshaft adjustment unit, left (M62 VANOS from 9/98)

Remove intake filter housing with air-mass flow sensor.

Remove fan impeller with fan clutch

refer to 11 52 020 REMOVING AND INSTALLING OR REPLACING FAN COUPLING (M62) .

Unfasten drain plug for coolant on left engine block.

Drain and dispose of coolant.

Replace sealing ring on drain plug.

Tightening Torque

refer to 11 11 5AZ in ENGINE - TIGHTENING TORQUES

Top cup coolant. Vent cooling system and check for leaks

refer to 17 00 005 DRAINING AND TOPPING UP COOLANT .

Pull lock (1) and detach water hose.

Scheme 426

Disconnect connector.

Release screws on sealing flange.

Scheme 427

Note. The sealing flange seals the timing case cover via the solenoid valve.

If necessary, clean solenoid valve with a cloth.

Remove sealing flange (1).

Scheme 428

Note. Once it has been removed, oil drips from the solenoid valve. Have a cleaning cloth ready. Make sure no oil drips onto the belt drive. Remove any remnants of oil immediately with cleaning cloth.

Release solenoid valve with special tool 11 6 420.

Scheme 429

Install solenoid valve (1).

Clean solenoid valve (1) and sealing face (2).

Scheme 430

Tighten down solenoid valve with special tool 11 6 420.

For tightening torque

refer to 11 36 12AZ in ENGINE - TIGHTENING TORQUES

Scheme 431

Check sealing flange (1), replace if necessary.

Apply a light coat of oil to inside of sealing flange (1) at sealing face to solenoid valve and carefully install.

Scheme 432

Insert screws on sealing flange and tighten down.

Scheme 433

11 36 590 Removing and installing/replacing solenoid valve of camshaft adjustment unit, right (M62 VANOS from 9/98)

Remove intake filter housing with air-mass flow sensor.

Release screws on sealing flange.

Scheme 434

Note. The sealing flange seals the timing case cover via the solenoid valve. If necessary, clean solenoid valve with a cloth.

Remove sealing flange (1).

Scheme 435

Note. Once it has been removed, oil drips from the solenoid valve. Have a cleaning cloth ready. Make sure no oil drips onto the belt drive. Remove any remnants of oil immediately with cleaning cloth.

Release solenoid valve with special tool 11 6 420.

Scheme 436

Install solenoid valve (1).

Clean solenoid valve (1) and sealing face (2).

Scheme 437

Tighten down solenoid valve with special tool 11 6 420.

Tightening Torque

refer to 11 36 12AZ in ENGINE - TIGHTENING TORQUES

Scheme 438

Check sealing flange (1), replace if necessary.

Apply a light coat of oil to inside of sealing flange (1) at sealing face to solenoid valve and carefully install.

Scheme 439

Insert screws on sealing flange and tighten down.

Scheme 440

11 36 610 Removing and installing/replacing left camshaft adjustment unit (M62 VANOS from 9/98)

Special tools required

1. 00 9 250
2. 11 2 300
3. 11 2 441
4. 11 2 442
5. 11 2 443
6. 11 2 444
7. 11 2 445
8. 11 2 446
9. 11 3 310
10. 11 4 230
11. 11 4 231
12. 11 4 232
13. 11 5 180
14. 11 6 440
15. 11 6 450
16. 11 6 451
17. 11 6 452
18. 11 7 380

Remove intake filter housing with air-mass flow sensor.

Remove fan impeller with fan clutch and fan cowl.

Remove both cylinder head covers.

Remove spark plugs. See 12 12 011 REPLACING ALL SPARK PLUGS

Note. In firing TDC position, the inlet camshaft 1 to 4 rotates in the teeth of the camshaft adjustment unit.

Scheme 441

Removal of the left camshaft adjustment unit is described separately from installation. Assembly sequence for removal and installation is different.

Remove oil lines on left and right of cylinder head.

Scheme 442

Turn engine in direction of rotation as far as TDC firing position of first cylinder.

Scheme 443

Secure crankshaft in TDC position with special tool 11 5 180.

Scheme 444

Remove chain tensioning piston.

Remove both timing case covers at top.

Release nut (1) on sensor gear screw connection on cylinder bank 5 to 8.

Scheme 445

Remove sensor gear (2) on cylinder bank 5 to 8.

Scheme 446

Release nut (1) on sensor gear screw connection on cylinder bank 1 to 4.

Scheme 447

Remove sensor gear (2) on cylinder bank 1 to 4.

Scheme 448

When releasing camshaft screw connection grip camshaft at hexagon head.

Scheme 449

Slacken screw connection (1) of exhaust camshaft on cylinder bank 5 to 8 by approx. a half turn.

Scheme 450

When releasing camshaft screw connection grip camshaft at hexagon head.

Slacken screw connection (1) of exhaust camshaft on cylinder bank 1 to 4 by approx. a half turn.

Scheme 451

When releasing camshaft screw connection grip camshaft at hexagon head.

Slacken screw connection (2) of inlet camshaft on cylinder bank 5 to 8 by approx. a half turn.

Scheme 452

When releasing camshaft screw connection grip camshaft at hexagon head.

Slacken screw connection (2) of inlet camshaft on cylinder bank 1 to 4 by approx. a half turn.

Scheme 453

Align camshafts.

Attach special tool 11 2 445 / 11 2 441 to camshafts, cylinder bank 1 to 4.

Scheme 454

Attach special tool 11 2 443 to special tool 11 2 445 / 11 2 441 and secure with special tool 11 2 444 via spark plug thread.

Scheme 455

Align camshafts.

Attach special tool 11 2 446 / 11 2 442 to camshafts, cylinder bank 5 to 8.

Scheme 456

Attach special tool 11 2 443 to special tool 11 2 446 / 11 2 442 and secure with special tool 11 2 444 via spark plug thread.

Scheme 457

Compress chain tensioner on cylinder bank 5 to 8 and lock with special tool 11 3 310.

Scheme 458

Remove screws (1 and 2) on cylinder bank 5 to 8.

Scheme 459

Pull exhaust sprocket wheel (1) and camshaft adjustment unit (2) forwards until they are no longer secured on camshafts.

Scheme 460

Feed out timing chain (1) forwards over sprocket wheel of camshaft adjustment unit (2).

Feed out exhaust sprocket wheel with secondary chain and camshaft adjustment unit (2).

Scheme 461

Installation of the left camshaft adjustment unit is described separately from removal. Assembly sequence for removal and installation is different.

Pull up timing chain, position camshaft adjustment unit (2) with exhaust sprocket wheel and fitted secondary chain and feed on timing chain (1) from front over sprocket wheel of camshaft adjustment unit (2).

Note. The position of the elongated holes on the exhaust sprocket wheel is not assigned and can be freely selected. The position of the camshaft adjustment unit (2) when feeding on the timing chain (1) is not assigned and can be freely selected.

Scheme 462

Position exhaust sprocket wheel (1) and camshaft adjustment unit (2) on camshafts.

Scheme 463

Insert screws (1 and 2) on cylinder bank 5 to 8 and initially tighten without play, but do not tighten down yet.

Scheme 464

Compress chain tensioner and remove special tool 11 3 310.

Scheme 465

Fit special tool 11 7 380 to right cylinder head on cylinder bank 1 to 4.

Scheme 466

Note. The special tool kit 11 3 390 can no longer be fitted in the E53 (X5) with M62 engine due to the altered space conditions. With the market launch of the E53 (X5) with M62 engine, the special tool kit 11 3 390 is dropped. The shorter special tool kit 11 4 230 comprising special tools 11 4 231 and 11 4 232 replaces the special tool kit 11 3 390.

Scheme 467

Insert special tool 11 4 230 in special tool 11 7 380.

Screw in adjustment screw on tensioning rail, but do not tighten yet.

Scheme 468

Note. The continuity test with the multimeter described in the following is not possible on the M62 B46 because of the different design of the camshaft adjustment unit.

The remaining procedure is identical.

Connect a commercially available multimeter to a contact pin on camshaft adjustment unit and to the screw connection on oil line on cylinder bank 5 to 8.

Set multimeter to acoustic continuity test.

Scheme 469

Attach special tool 11 6 440 to camshaft adjustment unit on cylinder bank 5 to 8 and move at 40 N.m to left-hand stop.

Check left-hand stop of camshaft adjustment unit with acoustic continuity test on multimeter.

Scheme 470

Note. Rotating the camshaft adjustment unit at 40 N.m to the left-hand stop ensures that the end position is reached and there is no longer an "oil cushion" before the left-hand stop of the camshaft adjustment unit. In the camshaft adjustment unit, there are three contacts which are closed when the unit is at the left-hand stop. During the acoustic continuity test with the multimeter, a sound signal can be heard when the camshaft adjustment unit is at the left-hand stop.

Tighten screw connection (2) of inlet camshaft on cylinder bank 5 to 8 to an initial torque of 15 N.m and then slacken off again by a 1/4 turn.

Scheme 471

Tighten screw connection (1) of exhaust camshaft on cylinder bank 5 to 8 to an initial torque of 15 N.m and then slacken off again by a 1/4 turn.

Scheme 472

Note. The continuity test with the multimeter described in the following is not possible on the M62 B46 because of the different design of the camshaft adjustment unit. The remaining procedure is identical.

Connect a commercially available multimeter to a contact pin on camshaft adjustment unit and to the screw connection on oil line on cylinder bank 1 to 4.

Set multimeter to acoustic continuity test.

Scheme 473

Attach special tool 11 6 440 to camshaft adjustment unit on cylinder bank 1 to 4 and move at 40 N.m to left-hand stop.

Check left-hand stop of camshaft adjustment unit with acoustic continuity test on multimeter.

Scheme 474

Tighten screw connection (2) of inlet camshaft on cylinder bank 1 to 4 to an initial torque of 15 N.m and then slacken off again by a 1/4 turn.

Scheme 475

Tighten screw connection (1) of exhaust camshaft on cylinder bank 1 to 4 to an initial torque of 15 N.m and then slacken off again by a 1/4 turn.

Scheme 476

Pretension tensioning rail by turning adjusting screw on special tool 11 4 230 with special tool 00 9 250 to 0.7 N.m.

Note. If installation tolerance is unfavorable, attach special tool 00 9 250 from underside.

Scheme 477

Note. Pretensioning the timing chain moves the camshaft adjustment unit and the unit must therefore be reset to the left-hand stop.

Attach special tool 11 6 440 to camshaft adjustment unit on cylinder bank 5 to 8 and move at 40 N.m to left-hand stop.

Check left-hand stop of camshaft adjustment unit with acoustic continuity test on multimeter.

Scheme 478

When tightening down camshaft screw connection grip camshaft at hexagon head.

Scheme 479

Tighten down screw connection (2) of inlet camshaft on cylinder bank 5 to 8.

Tightening torque, see 11 36 14AZ in ENGINE - TIGHTENING TORQUES

Scheme 480

When tightening down camshaft screw connection grip camshaft at hexagon head.

Tighten down screw connection (1) of exhaust camshaft on cylinder bank 5 to 8.

Tightening torque, see 11 36 13AZ in ENGINE - TIGHTENING TORQUES

Scheme 481

Note. The continuity test with the multimeter described in the following is not possible on the M62 B46 because of the different design of the camshaft adjustment unit. The remaining procedure is identical.

Attach special tool 11 6 440 to camshaft adjustment unit on cylinder bank 1 to 4 and move at 40 N.m to left-hand stop.

Check left-hand stop of camshaft adjustment unit with acoustic continuity test on multimeter.

Scheme 482

When tightening down camshaft screw connection grip camshaft at hexagon head.

Tighten down screw connection (2) of inlet camshaft on cylinder bank 1 to 4.

Tightening torque, see 11 36 14AZ in ENGINE - TIGHTENING TORQUES

Scheme 483