Engine - Repair Instructions - x5 (3.0l)

00 00 250 BMW engine oil service incl. supplementary service (M54 / M56)

Note. This article comprises the engine oil and supplementary services. Only the engine oil service will be described in these repair instructions. For the supplementary service work steps, refer to the vehicle-specific inspection sheet.

Engine Oil Service

Release and tighten down main flow oil filter cap with a socket only.

When the main flow oil filter cap is opened, engine oil flows from the oil filter housing back into the oil sump.

Release main flow oil filter cap and remove towards top.

Installation

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

Scheme 632

Scheme 632: 00 00 250 BMW engine oil service incl. supplementary service (M54 / M56)

Installation

Replace and oil O-ring.

Scheme 633

Drain or draw off engine oil.

When engine oil is drained, open cap in engine underguard.

Open oil drain plug and drain off engine oil.

Installation

Replace sealing ring.

Scheme 634

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

Complete vehicle and set in horizontal position.

Top up engine oil.

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

Switch off engine, wait approx. 5 minutes and then check engine oil level.

Top up engine oil if necessary.

Supplementary Service

Refer to vehicle-specific inspection sheet.

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

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

110 224.
110 226

IMPORTANT

High tension - mortal danger! Cut off power supply to ignition coils (disconnect plug connection at DME control unit).

Necessary Preliminary Tasks

Connect charger or a second battery.
Read out fault memory of DME control unit
Pull fuel pump relay or fuel pump fuse.
Start engine and allow residual fuel to drain out (pressure reduction). Remove all spark plugs.

IMPORTANT

Check Schrader valve on special tool 11 0 226 for tight fit.

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.

Scheme 635

Depress accelerator and actuate starter until compression stops rising.

Compression pressure, refer to ENGINE IN GENERAL .

Scheme 636

Assemble engine.

Now clear the fault memory.

11 00 045 Checking absolute compression of all cylinders

With BMW Diagnosis Information System (DIS).

Scheme 637

Scheme 637: 11 00 045 Checking absolute compression of all cylinders

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

11 00 050 Removing and installing engine (M54)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

11 0 000
51 2 170

Instructions for disconnecting and connecting battery, refer to 12 00... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .

Disconnect negative battery lead.

Remove heater bulkhead.

Remove engine cover.

Remove both oxygen monitor sensors, refer to 11 78 613 REPLACING BOTH OXYGEN MONITOR SENSORS (M52TU / M54 / M56) .

Move engine hood to 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 638

Remove front splash guard.

Remove reinforcement plate, refer to FRONT AXLE SUPPORT .

CAUTION

The article "Removing and installing reinforcement plate" contains important installation instructions.

Remove transmission.

Remove A/C compressor drive belt, refer to 11 28 050 REPLACING A/C COMPRESSOR DRIVE BELT (M52 / S52 / M52TU / M54 / M56) .

Remove A/C compressor from bearing block and tie back to one side.

Note. Lines remain connected.

Drain and dispose of coolant.

Note. The water drain plug is located on the exhaust side on cylinder 2 in the engine block.

Installation

Replace sealing ring of water drain plug.

Tightening torque, (25 N.m.).

Pull locks (1) and disconnect water hoses.

Scheme 639

Installation

Refer to general instructions for work on cooling system, refer to 17 00 ... INSTRUCTIONS FOR WORKING ON COOLING SYSTEM .

Remove radiator, refer to 17 11 000 REMOVING AND INSTALLING RADIATOR (M62, M54 AND M57) .

Remove intake air manifold, refer to 11 61 050 REMOVING AND INSTALLING INTAKE AIR MANIFOLD (M54) .

Disconnect water hoses from water pipe and from heating valve.

Release wiring harness section for engine and lay to one side.

Draw off hydraulic fluid from supply tank for power steering pump.

Dispose of hydraulic fluid.

Observe country-specific waste-disposal regulations.

Unfasten reservoir for power steering unit and tie up to one side.

Note. Lines remain connected.

Scheme 640

Remove fan clutch with fan impeller from water pump, refer to 11 52 020 REMOVING AND INSTALLING/REPLACING FAN CLUTCH (S52 / S54 / M52 / M52TU / M54 / M56) .

Remove alternator drive belt, refer to 11 28 010 REPLACING ALTERNATOR DRIVE BELT (M52 / S52 / M52TU / M54 / M56) .

Remove vane pump for power steering and tie back to one side.

Note. Lines remain connected.

Suspend engine from special tool 11 0 000.

Scheme 641

Front and rear suspension arrangement.

Scheme 642

Unfasten right ground wire.

Unscrew left and right engine mounts.

Carefully lift out engine.

Scheme 643

11 12 000 Removing and installing, sealing cylinder head cover (M52TU / M54 / M56)

Remove engine cover.

Remove ignition coils, refer to 12 13 511 REPLACING IGNITION COIL (M52, M52TU, M54) .

Remove wiring harness of ignition coils from cylinder head cover and place to one side.

Note. Illustration on M54 engine. Press lock. Pull off the hose for the engine breather.

Scheme 644

Scheme 644: 11 12 000 Removing and installing, sealing cylinder head cover (M52TU / M54 / M56)

Remove grounding straps (1).

Remove cylinder head cover, refer to 11 12 000 REMOVING AND INSTALLING, SEALING CYLINDER HEAD COVER (M52TU / M54 / M56) .

Scheme 645

Installation

Remove sealing debris from sealing faces of cylinder head and cylinder head cover.

Apply a sealing bead of Drei Bond 1209 on left and right sides at transition between cylinder head and VANOS adjustment unit.

Scheme 646

Installation

Apply a thin and even sealing bead of Drei Bond 1209 at transition to half-moon sections at VANOS adjustment unit.

Scheme 647

Note. Illustration with engine removed.

Installation

Apply a thin and even sealing bead of Drei Bond 1209 at transition to half-moon sections at rear of cylinder head.

Check seals and replace if necessary.

Scheme 648

Note. Illustration with engine removed.

Installation

Make sure gasket is correctly seated on rear and front ends of cylinder head.

Install cover bolts and align cylinder head cover.

Hand-tighten all cover bolts without preload. Tighten cap nuts crosswise from inside to outside.

Scheme 649

11 12 100 Removing and installing/sealing cylinder head (M54)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

00 9 120

Remove both exhaust manifolds, refer to 11 62 140 REMOVING AND INSTALLING, SEALING OR REPLACING BOTH EXHAUST MANIFOLDS WITH CATALYTIC CONVERTER (M54) .

Remove intake filter housing with air-mass flow sensor.

Remove cylinder head cover, refer to 11 12 000 REMOVING AND INSTALLING, SEALING CYLINDER HEAD COVER (M52TU / M54 / M56) .

Remove all spark plugs.

Remove intake air manifold, refer to 11 61 050 REMOVING AND INSTALLING INTAKE AIR MANIFOLD (M54) .

Open coolant drain plug on engine block. Drain and dispose of coolant.

Installation

Replace sealing ring on drain plug.

Tightening torque, (25 N.m.).

Vent cooling system and check for leaks, refer to 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR LEAKS (M54 / M56) .

Remove coolant thermostat housing, refer to 11 53 000 REMOVING AND INSTALLING/REPLACING COOLANT THERMOSTAT (M52TU / M54 / M56) .

Remove coolant pipe.

Note. If the coolant pipe cannot be fed out: Release banjo bolt (1) and disconnect oil pressure line for VANOS adjustment unit.

Scheme 650

Installation

Replace O-ring on coolant pipe.

If necessary, replace sealing rings on banjo bolt (1).

Tightening torque of banjo bolt, (32 N.m.).

Removal

Removal of cylinder head is described separately from installation.

Remove double VANOS adjustment unit, refer to 11 36 010 REMOVING AND INSTALLING OR REPLACING DOUBLE VANOS ADJUSTMENT UNIT (M52TU / M54 / M56) .

Remove camshafts with bearing strips, refer to 11 31 001 REPLACING CAMSHAFT (M52TU / M54 / M56) .

Release screw connection between timing case cover and cylinder head.

Scheme 651

Release screws, remove chain guide.

Scheme 652

Release cylinder head bolts from outside to inside in sequence 14 to 1.

Lift off cylinder head.

Scheme 653

Installation

Installation of cylinder head is described separately from removal.

Clean sealing faces of cylinder head and engine block; if necessary, remove traces of sealing compound with hardwood spatula. Make sure no gasket remnants drop into oil and cooling channels.

There must be no oil in the tapped holes of the engine block and the timing case cover.

Danger of cracking and distorted tightening values.

Check dowel sleeves for damage and correct installation position.

Scheme 654

Apply permanently elastic sealing compound Drei Bond 1209 to joints to timing case cover.

Replace cylinder head gasket.

Note. A 0.3 mm thick cylinder head gasket is available for cylinder heads remachined at the cylinder head gasket surface.

Put the cylinder head on.

Install new cylinder head bolts.

Apply a light coat of oil to washer contact area and thread of new cylinder head bolts.

Tighten down cylinder head bolts in sequence 1 to 14.

Tightening torque, refer to 11 12 6AZ in ENGINE - TIGHTENING TORQUES .

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

Scheme 655

Install chain guide.

Scheme 656

Insert screws and tighten down screw connection between timing case cover and cylinder head.

Scheme 657

Install camshafts, refer to 11 31 001 REPLACING CAMSHAFT (M52TU / M54 / M56) .

Install double VANOS adjustment unit, refer to 11 36 010 REMOVING AND INSTALLING OR REPLACING DOUBLE VANOS ADJUSTMENT UNIT (M52TU / M54 / M56) .

Assemble engine.

11 12 101 Replacing cylinder head gasket (M52 / S52 / M52TU / M54 / M56)

Tasks are identical to removing and installing cylinder head, refer to 11 12 503 DISASSEMBLING AND ASSEMBLING CYLINDER HEAD (M52 / S52 / M52TU / M54 / M56) .

11 12 503 Disassembling and assembling cylinder head (M52 / S52 / M52TU / M54 / M56)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

00 1 490
11 0 192
11 0 342
11 0 343
11 0 345
11 1 045
11 1 065
11 1 067
11 1 071
11 1 441
11 1 442

(Cylinder head removed.)

If necessary, remove coolant thermostat.

Screw on special tool 11 1 442 .

Scheme 658

Screw special tool 11 1 065 onto special tool 00 1 490 .

Provide special tools for disassembling cylinder head

Scheme 659

Scheme 660

Special tool 11 1 071 .
Special tool 11 1 067 .
Special tool 11 0 192 .
Special tool 11 1 045
Special tool 11 0 342
Special tool 11 0 343
Special tool 11 0 345
Special tool 11 1 441 . Assemble special tools.

Note. Do not install special tool 11 1 441 (locating board) in special tool 11 1 065 at this stage.

Scheme 661

Place cylinder head on special tool 11 1 065 and screw on with two screws.

Scheme 662

Remove all valve springs, refer to 11 34 715 REPLACING ALL VALVE SPRINGS (M52 / S52 / M52TU / M54 / M56) .

Remove all valve stem seals, refer to 11 34 560 REPLACING ALL VALVE STEM SEALS (M52 / S52 / M52TU / M54 / M56) .

Remove all valves, refer to 11 34 552 REMOVING AND INSTALLING OR REPLACING ALL VALVES (M52 / S52 / M52TU / M54 / M56) .

11 12 527 Remachining a valve seat (M52 / S52 / M52TU / M54 / M56)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

00 3 520
00 3 580

(Cylinder head dismantled.).

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

Scheme 663

Note. After machining the valve seat surface, remachine the outside and inside diameters with a correction milling tool to the prespecified diameter to produce valve seat width (5).

Scheme 664

Valve-seat angle.
Correction angle, outside.
Correction angle, inside.
Outside diameter seat face.
Valve-seat width. Specified values (1 to 5), refer to «ENGINE - TECHNICAL DATA»(/bmw/x5/e53-1999-2003/remont/mechanical/#engine-technical-data-x5-30l) .

11 12 595 Checking a valve guide for wear (M52 / S52 / M52TU / M54 / M56)

(Valve removed.)

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

Attach dial gauge and measure tilt clearance.

Note. Max. permissible tilt clearance, refer to ENGINE - TECHNICAL DATA .

Scheme 665

Scheme 665: 11 12 595 Checking a valve guide for wear (M52 / S52 / M52TU / M54 / M56)

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 valve guide, refer to 11 12 600 REAMING A VALVE GUIDE (M52 / S52 / M52TU / M54 / M56) .

Scheme 666

11 12 600 Reaming a valve guide (M52 / S52 / M52TU / M54 / M56)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

00 4 210

(Valve removed.)

Note. In event of excessive clearance between valve stem and valve guide: Valve guide is reamed and a repair valve with a larger stem diameter is installed.

Assemble reaming tool and guide taper (1) from special tool kit 00 4 210 depending on stem 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. Remachine valve seat after reaming. Refer to 11 12 527 REMACHINING A VALVE SEAT (M52 / S52 / M52TU / M54 / M56) .

Scheme 667

11 12 719 Resurfacing cylinder head sealing surface (M52 / M52TU / M54 / M56)

(Cylinder head dismantled.)

Check flatness of cylinder head sealing surface with a commercially available straightedge.

Deviation from flatness max. 0.05 mm.

Scheme 668

Scheme 668: 11 12 719 Resurfacing cylinder head sealing surface (M52 / M52TU / M54 / M56)

Note. Machining limit, refer to ENGINE - TECHNICAL DATA .

Scheme 669

Note. For compression comparison check, a repair cylinder head seal is provided.

Scheme 670

11 12 729 Checking cylinder head for watertightness (M52TU / M54 / M56)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

11 7 390
11 7 391
11 7 392
11 7 393
11 7 394
11 7 395
11 7 396
11 7 397
11 7 398

(Cylinder head dismantled.)

Prepare special tool kit 11 7 390 .

Note. Special tool kit 11 7 390 consists of special tools 11 7 391 / 11 7 392 / 11 7 393 / 11 7 394 / 11 7 395 / 11 7 396 / 11 7 397 / 11 7 398 .

Place special tools 11 7 391 / 11 7 392 on cylinder head sealing surface and screw down with cylinder head bolts.

Scheme 671

Turn back screw (1).

Note. Special tool 11 7 394 is secured with a pin (2).

Fit special tool 11 7 394 .

Scheme 672

Insert screw (1) by hand until special tool 11 7 393 rests on sealing surface.

Tighten down screw (1) by approx. a half to one turn.

Scheme 673

Check sealing rings (1) and coat with water as anti-friction coating. Insert special tool 11 7 395 and tighten down.

Scheme 674

Seal coolant apertures with special tool kit 11 7 390 .

Scheme 675

Connect compressed air to special tool 11 7 395 .

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

Check cylinder head for escaping air (cracks).

Note. If necessary, soften the bath water with a cleaning agent.

Scheme 676

11 13 000 Removing and installing, sealing or replacing oil sump (M52TU / M54 / M56)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

00 0 200
00 0 201
00 0 202
00 0 204
00 0 208

Note. To remove the oil sump, you must lower the front axle support. There is no need to perform a front axle alignment check.

Assemble special tool 00 0 200 with special tools 00 0 201 / 00 0 202 / 00 0 204 / 00 0 208 and fit.

Secure special tool 00 0 200 to front suspension eye on engine.

Note. The supports (1) of special tool 00 0 208 must rest on the bolt connection of both side walls.

Scheme 677

Tighten the screws (1 and 2).

Scheme 678

Raise engine with special tool 00 0 200 approx. 5 mm.

Scheme 679

Remove suction filter housing.

Remove engine splash guard.

Drain engine oil, refer to 00 00 250 BMW ENGINE OIL SERVICE INCL. SUPPLEMENTARY SERVICE (M54 / M56) .

On vehicles with automatic transmission

Disconnect oil lines from automatic transmission and from oil pan.

Release guide tube for dipstick.

Note. M52 TU and M54 only.

Detach return hose from cyclone oil separator on oil dipstick guide tube.

Remove oil dipstick guide tube upwards.

Scheme 680

Installation

Replace O-ring.

Scheme 681

Remove front end reinforcement.

Remove vane pump for power steering unit (lines remain connected).

Disconnect plug connection to oil level sensor.

Loosen top and unfasten bottom of left and right engine mounts.

Scheme 682

Installation

Replace gasket.
Install oil sump.
Insert all oil sump screws.
Insert screws in transmission end without preload at this stage.
Tighten down screws in engine end.
Tighten down screws in transmission end.

11 13 000 Removing and installing/replacing oil sump (M54)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

00 0 200
00 0 201
00 0 202
00 0 204
00 0 208
00 2 030
11 0 020
31 2 220
51 2 170

Note. To remove the oil sump, you must lower the front axle support. There is no need to perform a front axle alignment check.

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 683

Remove cover for fuel injectors.

Scheme 684

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

Fit special tool 00 0 200 to special tool 00 0 201 / 00 0 202 / 00 0 204 / 00 0 208 and attach.

Attach special tool 11 0 020 as shown in illustration to special tool 00 0 200 .

Scheme 685

Secure special tool 11 0 020 to front and rear engine suspension eyes.

Scheme 686

CAUTION

Make sure no lines or cables on rear side of engine are damaged by chain.

The supports (1) of special tool 00 0 208 must make contact with the screws on the side walls.

Tighten the screws (1 and 2).

Scheme 687

Unfasten top left and right nuts on engine mount.

Scheme 688

Raise engine with special tool 00 0 200 approx. 5 mm.

Scheme 689

Remove front splash guard.

Remove reinforcement plate, refer to FRONT AXLE SUPPORT .

CAUTION

The article "Front Axle Support" contains important installation instructions.

Remove left and right swivel bearings, refer to SWIVEL BEARING .

Remove output shafts.

Remove propeller shaft at front, refer to 26 20 000 REMOVING AND INSTALLING FRONT PROPELLER SHAFT .

Remove alternator drive belt from belt pulley for vane pump.

Remove vane pump for power steering.

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

Open oil drain plug and drain off engine oil.

Disconnect return hose from oil separator.

Remove guide pipe for dipstick.

Installation

Replace O-ring.

Unfasten steering spindle from steering gear. This operation is described in the article 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.

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 690

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 FRONT AXLE SUPPORT .

Remove front axle differential, refer to DIFFERENTIAL ASSEMBLY .

Release screws on oil sump.

Move oil sump backwards.

Installation

Sealing faces clean and free of seal debris.

In area of joints on end and timing case covers

Apply Drei Bond 1209 sealing compound approx. 3 mm wide and 2 mm high.

Scheme 691

Installation

Replace gasket.
Install oil sump.
Insert all oil sump screws.
Insert screws in transmission end without preload at this stage.
Tighten down screws in engine end.
Tighten down screws in transmission end.

11 14 110 Removing and installing lower timing case cover (M52 / S52 / M52TU / M54)

Remove VANOS adjustment unit, refer to 11 36 010 REMOVING AND INSTALLING OR REPLACING DOUBLE VANOS ADJUSTMENT UNIT (M52TU / M54 / M56) .

Remove coolant thermostat, refer to 11 53 000 REMOVING AND INSTALLING/REPLACING COOLANT THERMOSTAT (M52TU / M54 / M56) .

Remove alternator drive belt and drive belt tensioner.

Brace pulley for water pump with drive belt and unfasten screws.

Scheme 692

Scheme 692: 11 14 110 Removing and installing lower timing case cover (M52 / S52 / M52TU / M54)

11 14 141 Replacing radial seal in lower timing case cover

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

11 2 380
11 2 383
11 2 385
11 3 280

Note. This repair instruction is valid for the following engines: M50 / M52 / M52TU / M54 / M56

Remove vibration damper, refer to 11 23 010 REMOVING AND INSTALLING OR REPLACING VIBRATION DAMPER (M52TU / M54 / M56) .

Fit special tool 11 2 383 to crankshaft.

Scheme 693

Fit special tool 11 2 385 to crankshaft.

Align groove of special tool 11 2 385 to featherkey of crankshaft.

Note. Special tool 11 2 385 centers special tool 11 2 380 .

Scheme 694

Screw in special tool 11 2 380 until it has made firm contact with radial seal.

Remove radial seal by tightening screw on special tool.

Scheme 695

Installation

Coat sealing lips of new radial sealing ring with oil.

Using special tool 11 3 280 and centering screw, install new radial seal flush with timing case cover.

Scheme 696

11 14 151 Replacing crankshaft radial seal (transmission side)

Note. This repair instruction is valid for the following engines

M50 / M52 / M52TU / M54 / M56.

Necessary Preliminary Tasks

Remove gearbox.
Drain off engine oil.
Remove flywheel.

Unfasten oil sump screws on transmission end.

Loosen oil pan.

Scheme 697

Release screws in end cover at rear.

Carefully detach oil sump gasket from end cover, remove end cover.

Note. After removing end cover: check oil sump gasket for damage. If necessary, remove oil sump and replace oil sump gasket.

Scheme 698

Note. As from 4/98, a new type of radial seal is used in the Series and as a replacement. This radial seal may only be supported with a "support bushing". If the radial seal is supported without the support bushing (1) for more than six months, operational reliability will no longer be assured and the radial seal must not be used any further.

Scheme 699

Distinguishing feature

New version "without hose spring".
Old version "with hose spring".

Important!

The sealing lip of the new version (1) is very sensitive and must not be kinked under any circumstances. Do not touch the sealing lip with your fingers.

Scheme 700

Note. The end cover is offered in the kit with a radial seal. If necessary, lift out the radial sealing ring and drive in new sealing ring using special tool 11 1 260 in conjunction with special tool 00 5 500 .

Scheme 701

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

Replace seal (2).

Apply thin, uniform coat of Drei Bond 1209 sealing compound to edges of joint on oil pan.

Scheme 702

Important!

Do not use special tool 11 2 213 for the new radial seal version.

Scheme 703

Note. When fitting the end cover with radial seal on the crankshaft, it is only permitted to use the "support bushing (1)" as an installation tool.

Lubricate contact face of crankshaft.

Scheme 704

Important!

Push on end cover with support bushing (1) straight and without tilting sideways.

Note. Screw threads (1) are coated with sealing compound.

Replace screws (1).

Insert all screws and tighten down end cover.

Scheme 705

Note. Keep the support bushing (1) of the new radial seal version as a "special tool", then render the special tool 11 2 213 unusable and dispose of it.

The old and new radial seal versions can be installed with the support bushing (1).

Scheme 706

11 21 500 Replacing crankshaft (M52 / S52 / M52TU / M54 / M56)

(Engine removed.)

Necessary Preliminary Tasks

Removing cylinder head.
Removing lower timing case cover.
Removing all pistons, refer to «11 25 530 REMOVING AND INSTALLING OR REPLACING ALL PISTONS (M52 / S52 / M52TU / M54 / M56)»(/bmw/x5/e53-1999-2003/remont/mechanical/#engine-repair-instructions-x5-30l__11-25-530-removing-and-installing) .
Remove end cover at rear; this operation is described in «11 14 151 REPLACING CRANKSHAFT RADIAL SEAL (TRANSMISSION SIDE)»(/bmw/x5/e53-1999-2003/remont/mechanical/#engine-repair-instructions-x5-30l__11-14-151-replacing-crankshaft-radial) .

Checking axial clearance

If permitted end float is exceeded, check crankshaft, guide bearing shells and engine block, replacing if necessary, end float.

Scheme 707

Unfasten screw connection on reinforcement plates.

Note. The reinforcement plates are not fitted on engines with gray cast iron engine blocks or on engines with oil pumps integrated in oil scrapers.

Scheme 708

Unfasten screw connection on main bearing.

Remove main bearing caps (1 to 7).

Lever out crankshaft.

Scheme 709

If necessary, release incremental gear.

Installation

Replace screws.

Install screws and tighten down in two passes.

Tightening torque, refer to 11 21 1AZ in ENGINE - TIGHTENING TORQUES .

Important!

Check grinding stage of crankshaft, refer to ENGINE - TECHNICAL DATA .

Scheme 710

Replace main crankshaft bearing shells, refer to 11 21 531 REPLACING ALL MAIN CRANKSHAFT BEARING SHELLS (M52 / S52 / M52TU / M54 / M56) .

Replace conrod bearing shells, refer to 11 24 571 REPLACING ALL CONNECTING ROD BEARINGS (M52 / S52 / M52TU / M54 / M56) .

Replace grooved ball bearings in crankshaft, refer to 11 21 571 REPLACING GROOVED BALL BEARING IN CRANKSHAFT (M52 / S52 / M52TU / M54 / S50 / S54) .

11 21 531 Replacing all main crankshaft bearing shells (M52 / S52 / M52TU / M54 / M56)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

00 2 590
00 9 120
11 2 110

(Engine dismantled.)

M52 B20 / M52TU B20 M54 M22

Note. Injection nozzles for cooling the pistons are installed in the bores of bearing seats 2 to 7.

Scheme 711

M54 B25 / B30

Note. Injection nozzles for cooling the pistons are installed on the underside of the cylinder between the bearing seats.

Installation

Screw threads are coated with screw securing adhesive (Loctite).

Replace screws.

Scheme 712

Important!

Observe grinding stage of crankshaft, refer to ENGINE - TECHNICAL DATA .

Scheme 713

Installation

When replacing the bearing shells (also for replacement crankshaft), classification for bearing shell arrangement in engine block is waived.

Insert bearing shells with yellow color coding in engine block.

Scheme 714

Note. Install bearing shells with continuous lubricant groove and one retaining lug in engine block. Fit bearing shells without continuous lubricant groove and two retaining lugs in bearing cover.

Note. The axial guide on the crankshaft is fitted to bearing point 6. Insert pilot bearing shell in the engine block.

Scheme 715

Install crankshaft.

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

Scheme 716

Installation

The bearing shell classification for the bearing cover is marked on the crankshaft in yellow, green or white paint.

Insert main bearing shells with same crankshaft color coding in main bearing caps.

Scheme 717

The bearing shells are marked with yellow, green or white paint.

Scheme 718

Bearing shell.
Guide bearing. Observe grinding stage of main bearing journals, refer to «ENGINE - TECHNICAL DATA»(/bmw/x5/e53-1999-2003/remont/mechanical/#engine-technical-data-x5-30l) .

Note. Bearing caps 1 to 5 are marked on exhaust side. Bearing caps 6 and 7 are not designated. Bearing cap 6 is a thrust bearing.

Scheme 719

Check clearance on main crankshaft bearing.

Install crankshaft and place special tool 00 2 590 (Plastigage Type PG1) on oil-free crankshaft.

Do not twist crankshaft.

Scheme 720

Install main bearing cap so that grooves in main bearing shell guide are one side.

Align main bearing cap flush with side of bearing seat.

Scheme 721

Installation

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

There must be no oil in the blind holes (risk of cracking).

Scheme 722

Tighten down main bearing screws with jointing torque.
Tighten down main bearing bolts with special tool 00 9 120 to angle of rotation. Tightening torque, refer to 11 11 1AZ in «ENGINE - TIGHTENING TORQUES»(/bmw/x5/e53-1999-2003/remont/mechanical/#engine-tightening-torques-x5-30l) .

Remove main bearing cap and read off bearing clearance at width of pinched plastic thread on measuring scale.

Radial crankshaft bearing clearance, refer to ENGINE - TECHNICAL DATA .

If necessary, to correct bearing clearance, fit new bearing shells with a different color coding.

Scheme 723

Remove plastic thread.

Coat main bearing shells and crankshaft with engine oil.

Install main bearing cap so that grooves in main bearing shell guide are one side.

Align main bearing cap flush with side of bearing seat.

Scheme 724

Installation

Always replace bolts of main bearing cap with new bolts.

There must be no oil in the blind holes (risk of cracking).

Note. The reinforcement plates are not fitted on engines with gray cast iron engine blocks or on engines with oil pumps integrated in oil scrapers.

Installation

Install reinforcement plates and fit screws with zero backlash.

Install main bearing shells and abut firmly.

Tighten down screw connection on reinforcement plates.

Scheme 725

Tightening specifications for main bearing

Scheme 726

Tighten all screws on main bearing cover with jointing torque.
Unfasten screws on main bearing cover 6.
Strike back and front of crankshaft with plastic hammer to center thrust bearing (do not damage crankshaft).
Tighten screws of main bearing cover 6 with jointing torque.
Tighten down all screws of main bearing caps with special tool 11 2 110 or with special tool 00 9 120 to torsion angle. Tightening torque, refer to 11 11 1AZ in «ENGINE - TIGHTENING TORQUES»(/bmw/x5/e53-1999-2003/remont/mechanical/#engine-tightening-torques-x5-30l) .

Check axial play.

If permitted end float is exceeded, check crankshaft, guide bearing shells and engine block, replacing if necessary, refer to ENGINE - TECHNICAL DATA .

Scheme 727

11 21 571 Replacing grooved ball bearing in crankshaft (M52 / S52 / M52TU / M54 / S50 / S54)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

00 5 500
11 2 340
11 2 350

(Clutch removed.)

Important!

In version with needle bearing (1) in dual-mass flywheel (2), no grooved ball bearing may be fitted in the crankshaft.

Scheme 728

Version With Grooved Ball Bearing

Remove guide bearing with special tool 11 2 340 .

Scheme 729

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

Scheme 730

11 22 500 Removing and installing or replacing flywheel (M52 / S52 / M52TU / M54 / S54)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

11 2 170

(Clutch removed.)

Lock flywheel with special tool 11 2 170 .

Scheme 731

Unfasten screws and remove flywheel.

Scheme 732

Installation

Check dowel sleeve for damage and correct installation position.

Scheme 733

Position of dowel sleeve (1) in dual-mass flywheel is identified by two notches next to associated bolt hole.

Scheme 734

Installation

Clean thread and install new micro-encapsulated screws.

Tightening torque, refer to 11 22 1AZ in ENGINE - TIGHTENING TORQUES .

Scheme 735

11 22 513 Replacing roller bearing for dual-mass flywheel

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

21 2 051
21 2 052

Note. Flywheel removed!

Using hydraulic press (1) and special tool 21 2 051 , press out dual-mass flywheel downwards on engine side.

Important!

Risk of damage

Roller bearing must not be driven out.

Scheme 736

Push roller bearing (2) onto special tool 21 2 052 .

Using hydraulic press (1), press roller bearing into dual-mass flywheel as far as it will go on clutch side.

Scheme 737

Important!

Risk of damage

Observe press-in instruction

Roller bearing must not be driven in.
Roller bearing mounting force/travel monitored: Min. 2000N 1 mm before end of pressing in. Max. 15000N during entire press-in procedure.

11 23 010 Removing and installing or replacing vibration damper (M52TU / M54 / M56)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

11 8 190
11 8 200
11 8 210

Necessary Preliminary Tasks

Unscrew and remove splash guard.
Remove fan impeller with fan clutch and fan cowl, refer to «11 52 020 REMOVING AND INSTALLING/REPLACING FAN CLUTCH (S52 / S54 / M52 / M52TU / M54 / M56)»(/bmw/x5/e53-1999-2003/remont/mechanical/#engine-repair-instructions-x5-30l__11-52-020-removing-and-installingreplacing) .
Remove A/C compressor drive belt, refer to «11 28 050 REPLACING A/C COMPRESSOR DRIVE BELT (M52 / S52 / M52TU / M54 / M56)»(/bmw/x5/e53-1999-2003/remont/mechanical/#engine-repair-instructions-x5-30l__11-28-050-replacing-ac-compressor) .
Remove alternator drive belt, refer to «11 28 010 REPLACING ALTERNATOR DRIVE BELT (M52 / S52 / M52TU / M54 / M56)»(/bmw/x5/e53-1999-2003/remont/mechanical/#engine-repair-instructions-x5-30l__11-28-010-replacing-alternator-drive) .

Important!

Risk of damage.

Protect cooler against damage.

Version 1

Vibration damper and hub for vibration damper are two parts

Unscrew vibration damper bolts and take off vibration damper.

Scheme 738

Version 1

Vibration damper and hub for vibration damper are two parts

Installation

Align locating bore in vibration damper to dowel pin.

Install and tighten down screws.

Tightening torque, (22 N.m.).

Scheme 739

Version 2

Vibration damper and hub for vibration damper are one part

Screw special tool 11 8 190 to special tool 11 8 200 .

Scheme 740

Version 2

Note. Special tool 11 8 200 must snap into place in openings (1).

Scheme 741

Version 2

When releasing and tightening down central bolt, grip special tool 11 8 190 with assistance of a second person.

Version 2

Insert special tool 11 8 200 in openings on vibration damper and turn counterclockwise so that counter-supports snap into place on vibration damper.

Release central screw (1).

Scheme 742

Version 2

Feed out special tools 11 8 190 / 11 8 200 .

Remove central screw and washer.

Carefully detach vibration damper (1) by hand.

Scheme 743

Version 2

Note. If vibration damper cannot be detached by hand

Insert special tool 11 8 200 in openings on vibration damper and turn clockwise so that counter-supports snap into place on vibration damper.

Scheme 744

Version 2

Screw out spindle on special tool 11 8 210 as far as possible.

Version 2

Important!

Risk of damage.

Protect cooler against damage.

Carefully install special tool 11 8 210 .

Screw special tool 11 8 210 to special tool 11 8 200 .

Detach vibration damper by turning spindle (1) on special tool 11 8 210 .

Scheme 745

Version 2

Installation

Check featherkey (1) for damage and correct installation position.

Replace radial seal in lower timing case cover, refer to 11 14 141 REPLACING RADIAL SEAL IN LOWER TIMING CASE COVER .

Scheme 746

Version 2

Installation

Align groove (1) in vibration damper to featherkey.

Fit vibration damper.

Scheme 747

Version 2

Installation

Replace central screw (1).

Install central screw and washer.

Scheme 748

Version 2

Installation

Screw special tool 11 8 190 to special tool 11 8 200 .

Scheme 749

Version 2

Insert special tool 11 8 200 in openings on vibration damper and turn clockwise so that counter-supports snap into place on vibration damper.

Tighten down central screw (1).

Tightening torque, refer to 11 23 2AZ in ENGINE - TIGHTENING TORQUES .

Scheme 750

11 24 571 Replacing all connecting rod bearings (M52 / S52 / M52TU / M54 / M56)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

00 2 590
00 9 120
11 2 110

(Piston removed.)

Important!

Note grinding stages on crankshaft, refer to ENGINE - TECHNICAL DATA .

Install new conrod bearing shells.

Insert one blue (1) and one red (2) bearing shell (irrespective of the color coding on the conrod shaft).

Scheme 751

Install piston, refer to 11 25 530 REMOVING AND INSTALLING OR REPLACING ALL PISTONS (M52 / S52 / M52TU / M54 / M56) .

Check conrod bearing clearance.

Piston in BDC position.

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

Fit bearing caps so that pair numbers match up.

Scheme 752

Important!

Do not distort conrods or crankshaft.

Use the old conrod bolts to check conrod clearance.

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

Tightening torque, refer to 11 24 1AZ in ENGINE - TIGHTENING TORQUES .

Scheme 753

Remove bearing cap and read off bearing play at width of flattened plastic thread with assistance of measurement scale.

Conrod bearing clearance, refer to ENGINE - TECHNICAL DATA .

Scheme 754

Remove plastic thread.
Coat crankshaft and bearing shells with oil.
Install new conrod bolts and tighten down. Tightening torque, refer to 11 24 1AZ in «ENGINE - TIGHTENING TORQUES»(/bmw/x5/e53-1999-2003/remont/mechanical/#engine-tightening-torques-x5-30l) .

11 25 530 Removing and installing or replacing all pistons (M52 / S52 / M52TU / M54 / M56)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

00 9 120
11 2 110
11 2 260
11 2 470
11 3 480
11 8 141

(Engine removed.)

Remove cylinder head.

Removal

Removal of pistons is described separately from installation.

Assembly sequence for removal and installation is different.

Important!

Re-install piston, connecting rod and bearing shells back in the same position and in the same installation location.

Connecting rods and bearing covers are designated with the same pair number: do not mix them.

Remove oil pump, refer to 11 41 000 REMOVING AND INSTALLING/REPLACING OIL PUMP (M52TU / M54 / M56) .

If oil pump and oil scraper are two parts

Remove oil scraper.

Scheme 755

Note. Figure shows crankshaft removed.

On engines with spray nozzles for piston cooling on cylinder underside

Important!

When removing and installing pistons, make sure the piston cooling spray nozzles are not damaged.

Installation

Screw threads are coated with screw securing adhesive (Loctite). Replace screws.

Scheme 756

In event of heavy oil carbon residue

Carefully remove oil carbon residue from cylinder wall.

Scheme 757

Unscrew conrod bearing cover.

Scheme 758

Insert special tool 11 3 480 in conrod.

Remove conrod with piston from cylinder head side.

Scheme 759

Lift out retaining ring and press out piston pin.

Important!

Piston and piston pin are paired and must not be fitted individually.

Scheme 760

Installation

Installation of pistons is described separately from removal. The assembly sequence differs between removal and installation.

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 761

Measure piston installation clearance

Measure piston diameter with micrometer at distance A from the underside of the piston and at offset angle of 90° to piston pin axis.

Measurement A, refer to ENGINE - TECHNICAL DATA .

Scheme 762

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, refer to ENGINE - TECHNICAL DATA .

Piston installation clearance, refer to ENGINE - TECHNICAL DATA .

Total permissible wear tolerance, refer to ENGINE - TECHNICAL DATA .

Scheme 763

Replace conrod bearing shells, refer to 11 24 571 REPLACING ALL CONNECTING ROD BEARINGS (M52 / S52 / M52TU / M54 / M56) .

Important!

Piston and piston pin are paired and must not be fitted individually.

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 764

Install snap ring so that opening is opposite recess.

Scheme 765

Insert special tool 11 2 470 in conrod.

Scheme 766

Lightly coat pistons and piston rings with oil.

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

Note. Piston diameter 84 mm: Use special tool 11 8 141 . Press together piston rings with special tool 11 2 260 . Piston diameter 80 mm: Press together piston rings with special tool 11 2 260 .

Scheme 767

Install piston so that arrow points to camshaft drive.

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

Scheme 768

Important!

Danger of piston ring failure.

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

Attach crankpin to connecting rod.

Scheme 769

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

Fit bearing caps so that pair numbers match up.

Install new conrod bolts.

Scheme 770

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

Tightening torque, refer to 11 24 1AZ in ENGINE - TIGHTENING TORQUES .

Scheme 771

Install oil pump, refer to 11 41 000 REMOVING AND INSTALLING/REPLACING OIL PUMP (M52TU / M54 / M56) .

If oil pump and oil scraper are two parts

Fit oil scraper.

Assemble engine.

Scheme 772

11 25 671 Replacing piston rings on all pistons (M52 / S52 / M52TU / M54 / M56)

(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. Only install new pistons in conjunction with new piston rings.Put aside piston rings in correct sequence and installation position. Only install new pistons in conjunction with new piston rings.

Scheme 773

Scheme 773: 11 25 671 Replacing piston rings on all pistons (M52 / S52 / M52TU / M54 / M56)

Installation

Install piston rings with "TOP" to piston top.

Scheme 774

Scheme 775

Scheme 776

Plain compression ring.
Stepped compression ring "Top".
Slotted oil ring with hose spring clip. Measure axial play, refer to «ENGINE - TECHNICAL DATA»(/bmw/x5/e53-1999-2003/remont/mechanical/#engine-technical-data-x5-30l) . Measure end clearance, refer to «ENGINE - TECHNICAL DATA»(/bmw/x5/e53-1999-2003/remont/mechanical/#engine-technical-data-x5-30l) .

11 28 010 Replacing alternator drive belt (M52 / S52 / M52TU / M54 / M56)

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

Necessary Preliminary Tasks

Remove fan clutch with fan impeller, refer to «11 52 020 REMOVING AND INSTALLING/REPLACING FAN CLUTCH (S52 / S54 / M52 / M52TU / M54 / M56)»(/bmw/x5/e53-1999-2003/remont/mechanical/#engine-repair-instructions-x5-30l__11-52-020-removing-and-installingreplacing) .
Remove A/C compressor drive belt, refer to «11 28 050 REPLACING A/C COMPRESSOR DRIVE BELT (M52 / S52 / M52TU / M54 / M56)»(/bmw/x5/e53-1999-2003/remont/mechanical/#engine-repair-instructions-x5-30l__11-28-050-replacing-ac-compressor) .

Remove cap from tensioning roller.

Scheme 777

Relieve tension on belt drive.

Remove drive belt.

Important!

Drive belt must be replaced if fouled with hydraulic fluid.

Installation

Check drive belt for coolant and oil residues, replace if necessary.

Scheme 778

Installation

Check that belt is correctly positioned on belt pulleys.

Scheme 779

Version with auxiliary tensioning roller.

Scheme 780

Installation

Locking device of auxiliary tensioning roller must snap into groove on alternator.

Scheme 781

11 28 050 Replacing A/C compressor drive belt (M52 / S52 / M52TU / M54 / M56)

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

Necessary Preliminary Tasks

If necessary, remove splash guard.

Model With Hydraulic Drive Belt And Tension Jack

Remove the dust cab. Push back belt tensioner at bolt connection of guide pulley and remove drive belt.

Scheme 782

Model With Mechanical Drive Belt And Tension Jack

Press back drive belt tensioner at hexagon head or Torx socket and remove drive belt.

Important!

Drive belt must be replaced if fouled with hydraulic fluid.

Installation

Check drive belt for coolant and oil residues, replace if necessary.

Install drive belt, make sure it is correctly positioned on belt pulleys.

Scheme 783

11 31 001 Replacing camshaft (M52TU / M54 / M56)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

00 9 250
11 2 300
11 3 240
11 3 244
11 3 250
11 3 260
11 3 292
11 4 220
11 6 150
11 6 180

(If necessary inlet or exhaust side.)

The inlet or exhaust camshaft can be replaced in the vehicle.

Important!

Incorrect assembly/removal without special tools exposes the camshaft to the risk of preliminary damage or breakage. The valves may also be bent by contact with the piston crown. Comply without fail with the job instructions, recommended special tools and work sequence.

Removal

Removal of camshafts is described separately from installation.

The assembly sequence for removal and installation is different.

Remove VANOS adjustment unit, refer to 11 36 010 REMOVING AND INSTALLING OR REPLACING DOUBLE VANOS ADJUSTMENT UNIT (M52TU / M54 / M56) .

Important!

Cylinder for chain tensioning piston is under spring pressure.

Unfasten cylinder for chain tensioning piston.

Scheme 784

Press down secondary chain tensioner at top and lock with special tool 11 3 292 .

Scheme 785

Release nuts, remove sensor gear (1).

Scheme 786

Remove plate spring (2).

Scheme 787

Release nuts on inlet side and remove corrugated washer (7).

Scheme 788

Unfasten screws.

Scheme 789

Lift off exhaust and inlet chain wheels together with chain, friction washer (3) and toothed shaft (4).

Note. Toothed shaft (4) is and identical part for exhaust and inlet sides. Store used toothed shafts in order and reinstall on the same side only.

Scheme 790

Remove toothed shaft (5) with toothed sleeve (6).

Scheme 791

Unfasten screws. Remove secondary chain tensioner.

Scheme 792

Release screw-in pin.

Scheme 793

Feed chain wheel (1) towards front out of timing chain (2).

Scheme 794

Note. Timing chain remains positioned over exhaust camshaft.

Scheme 795

If necessary, release screw-in pin on inlet side.

Remove thrust washer.

Scheme 796

Remove sensor gear.

Scheme 797

Important!

Do "not" release these screws.

Scheme 798

Unscrew studs.

Scheme 799

Pull special tool 11 2 300 back until flywheel is no longer secured in position.

Scheme 800

Important!

To prevent damaging valves when fitting the camshafts, no pistons should be in TDC position.

Lift timing chain and hold under tension.

Rotate engine against direction of engine rotation approx. 30° using the central bolt.

Scheme 801

Important!

Bearing cap 1 of inlet camshaft is centered with adapter sleeves.

To prevent inlet camshaft from tilting in bearing strip, release nuts and remove bearing cap 1.

Scheme 802

Fit special tool 11 3 260 to cylinder head and screw into spark plug threads in cylinders 1 and 4.

Scheme 803

Turn the eccentric shaft to tension the bearing caps.

Unfasten nuts on bearing cover.

Scheme 804

Relieve tension on eccentric shaft and remove special tool 11 3 260 .

Remove bearing covers and place to one side in orderly fashion. Remove camshaft.

Scheme 805

Note. If the cylinder head is then to be removed, remove complete bearing strip with bucket tappets.

Locate bucket tappets in bearing strip with special tool 11 3 250 .

Lift out complete bearing strip with bucket tappet.

Note. Only re-use used bucket tappets in the same tappet bore.

Scheme 806

Check bearing points on bucket tappets for signs of wear (scoring).

Scheme 807

Bearing strips are marked "A" for exhaust side and "E" for inlet side.

Scheme 808

Note centering dowels on retaining pins at bearing points 2 and 7.

Install bearing strips.

Scheme 809

Installation

Installation of camshafts is described separately from removal.

The assembly sequence for removal and installation is different.

Note. Camshafts, bearings and bearing caps, friction washers, all splines on toothed shafts and spline hubs must be oiled before installation.

Important!

The bucket tappets expand when not subjected to load by the camshaft and therefore require some time before they can be pushed back down. During a rapid assembly sequence, the "closed" valves may still be open and be in contact with the piston.

Comply with following waiting periods after installing camshaft and before cranking engine back to TDC position.

Room temperature (20° C) 4 mins.
10° C - 20° C 11 mins.
0° C - 10° C 30 mins.

Pull up timing chain and feed in exhaust camshaft.

Position timing chain on exhaust camshaft.

Scheme 810

Install camshafts so that cam tips on inlet and exhaust valves on 1st cylinder face one another.

Scheme 811

Fit bearing cover.

Note. Bearing caps are marked from exhaust side

A1 - A7 for exhaust side.

E1 - E7 for inlet side.

Scheme 812

Fit special tool 11 3 260 to cylinder head and screw into spark plug threads in cylinders 1 and 4.

Scheme 813

Turn the eccentric shaft to tension the bearing caps.

Tighten down bearing cover.

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

Remove special tool 11 3 260 .

Scheme 814

Important!

Do not damage the cylinder head.

If necessary, machine open-end wrench accordingly.

Align camshafts with open-end wrench.

Scheme 815

Fit special tool 11 3 240 to camshafts on cylinder 6. Align camshafts so that special tool 11 3 240 rests without gaps on cylinder head.

Scheme 816

Attach special tool 11 3 244 to special tool 11 3 240 and locate by way of spark plug thread.

Scheme 817

Lift timing chain and hold under tension.

Turn engine from 30° before TDC position in direction of rotation as far as TDC position.

Scheme 818

Secure crankshaft in firing TDC position with special tool 11 2 300 .

Important!

Remove special tool 11 2 300 before starting engine.

Scheme 819

Automatic Transmissions Only

Illustration does not show automatic transmission.

Important!

On engines with automatic transmissions, there is shortly before the special tool bore (1) a large bore (2) which can be confused with the special tool bore.

If special tool 11 2 300 is secured in the correct bore (1), the engine can no longer be cranked at the central bolt.

Scheme 820

Position sensor gear on inlet camshaft.

Scheme 821

Fit thrust washer and tighten down with dowels.

Tightening torque, refer to 11 31 11AZ in ENGINE - TIGHTENING TORQUES .

Scheme 822

Feed chain wheel onto timing chain so that arrow on chain wheel faces separating face of upper side of cylinder head.

Scheme 823

Insert special tool 11 4 220 in cylinder head and bring adjustment screw into contact with tensioning rail, but do not pretension timing chain yet.

Check arrow on chain wheel to separating face of upper side of cylinder head, reposition chain wheel if necessary.

Scheme 824

Insert and tighten down screw-in pin.

Tightening torque, refer to 11 31 11AZ in ENGINE - TIGHTENING TORQUES .

Scheme 825

Install secondary chain tensioner.

Scheme 826

Fit toothed sleeve (6) and align to toothed shaft in camshaft so that tooth gaps are opposed.

Scheme 827

Secure toothed shaft (5).

Insert pin of toothed shaft (5) into tooth gaps of splines on camshaft and toothed sleeve (6).

Scheme 828

Push in toothed shaft (5) until the longitudinal holes in the toothed sleeve (6) are positioned centrally with respect to the thread.

Scheme 829

Place chain wheels in special tool 11 6 180 , position tooth gap on inlet chain wheel as shown in illustration and feed on chain.

Scheme 830

Important!

Do not alter position of chain wheels with respect to chain when removing from special tool 11 6 180 .

Remove chain with sprocket wheels positioned from special tool 11 6 180 and so that tooth spaces oppose each other on inlet side.

Scheme 831

Align chain with sprocket wheels so that tooth spaces are positioned exactly over each other on inlet side.

Scheme 832

Secure toothed shaft (4).

Insert pin of toothed shaft (4) into tooth gaps of splines on camshaft and chain wheel.

Scheme 833

Push in toothed shaft (4) until approx. 1 mm of splines can still be seen.

Scheme 834

Note installation direction of corrugated washer (7), "FRONT" lettering must be visible.

Install corrugated washer, tighten nuts by hand but do not tighten down fully yet.

Scheme 835

Insert screws on exhaust side, initially tighten to approx. 5 N.m and then slacken off again half a turn.

Scheme 836

Fit thrust washer (3).

Scheme 837

Note installation direction of cup spring (2), "F" lettering must be visible.

Note. If "F" lettering is no longer visible on an engine that has been run

Install cup spring (2) so that small locating diameter of spring (2) points to sensor gear.

Fit cup spring (2) in position.

Scheme 838

Position sensor gear (1) so that arrow on sensor gear faces separating face of upper side of cylinder head.

Install nuts and tighten by hand but do not tighten down fully yet.

Scheme 839

Withdraw toothed shaft (5) up to stop.

Scheme 840

Press down secondary chain tensioner at top and remove special tool 11 3 292 .

Scheme 841

Preload tensioning rail with special tool 11 4 220 by rotating adjusting screw with special tool 00 9 250 or standard torque wrench to 0.7 N.m.

Scheme 842

Preload cup spring slightly by pressing on sensor gear (1) and tighten nuts by hand.

Important!

Do not tighten down nuts fully.

Scheme 843

Remove gasket.

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

Keep sealing face clean and free of oil.

Scheme 844

Important!

Fit special tool 11 6 150 "without gasket" only.

If gasket remains underneath special tool 11 6 150 , camshaft timing will be "incorrectly" set.

Attach special tool 11 6 150 "without gasket", tighten nuts by hand and then tighten down uniformly until special tool 11 6 150 is in full contact with cylinder head.

Scheme 845

Insert screws (1) on exhaust side and initially tighten to approx. 5 N.m.

Scheme 846

Initially tighten nuts (2) on exhaust side and nuts (3) on inlet side to approx. 5 N.m.

Scheme 847

Tighten down screws (1) on exhaust side.

Tightening torque, refer to 11 31 3AZ in ENGINE - TIGHTENING TORQUES .

Scheme 848

Tighten down nuts (2) on exhaust side and nuts (3) on inlet side.

Tightening torque, refer to 11 31 11AZ in ENGINE - TIGHTENING TORQUES .

Scheme 849

Pull special tool 11 2 300 back until flywheel is no longer secured in position.

Scheme 850

Remove special tool 11 3 244 and special tool 11 3 240 .

Scheme 851

Crank engine twice in direction of rotation until cam tips on inlet and exhaust camshafts on 1st cylinder face one another.

Scheme 852

Secure crankshaft in firing TDC position with special tool 11 2 300 .

Important!

Do not turn the engine back.

Remove special tool 11 2 300 before switching on the engine.

Scheme 853

Fit special tool 11 3 240 to camshafts.

Scheme 854

Note. The timing is correctly set if the special tool 11 3 240 rests without a gap on the cylinder head or protrudes up to 1 mm to the inlet side.

The timing must be reset if the special tool 11 3 240 protrudes to the exhaust side.

Scheme 855

Remove special tool 11 6 150 .

Scheme 856

Install VANOS adjustment unit, refer to 11 36 010 REMOVING AND INSTALLING OR REPLACING DOUBLE VANOS ADJUSTMENT UNIT (M52TU / M54 / M56) .

Assemble engine.

11 31 005 Checking camshaft timing (M52TU / M54 / M56)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

00 9 250
11 2 300
11 3 240
11 3 450
11 4 220

Necessary Preliminary Tasks

Remove fan impeller with fan clutch, refer to «11 52 020 REMOVING AND INSTALLING/REPLACING FAN CLUTCH (S52 / S54 / M52 / M52TU / M54 / M56)»(/bmw/x5/e53-1999-2003/remont/mechanical/#engine-repair-instructions-x5-30l__11-52-020-removing-and-installingreplacing) .
Remove cylinder head cover, refer to «11 12 000 REMOVING AND INSTALLING, SEALING CYLINDER HEAD COVER (M52TU / M54 / M56)»(/bmw/x5/e53-1999-2003/remont/mechanical/#engine-repair-instructions-x5-30l__11-12-000-removing-and-installing) .
Remove all spark plugs. Refer to «12 12 011 REPLACING ALL SPARK PLUGS»(/bmw/x5/e53-1999-2003/remont/gauges-instrument-panels/#engine-electrical-system-repair-instructions-x5-30l__12-12-011-replacing-all-spark) .

Detach cover for inlet camshaft.

Scheme 857

Important!

Cylinder for chain tensioning piston is under spring pressure.

Remove cylinder for chain tensioning piston.

Scheme 858

Install special tool 11 4 220 .

Fit adjusting screw to bow cover.

Scheme 859

Preload tensioning rail with special tool 11 4 220 by rotating adjusting screw with special tool 00 9 250 or standard torque wrench to 0.7 N.m.

Scheme 860

Unscrew oil pressure pipe.

Scheme 861

Mount special tool 11 3 450 with banjo bolt of oil pressure line.

Scheme 862

Important!

Cover double VANOS adjustment unit; when the compressed air supply is connected, several drops of oil are sprayed out of the bore.

Scheme 863

Connect compressed air (2 to 8 bar).

Scheme 864

Note. When the engine is switched off, it is possible that the camshafts are not in their initial positions. With the compressed air supply connected, rotate the engine to return the camshafts to their initial positions.

With compressed air supply connected, crank engine at least two revolutions in direction of rotation until cam tips on inlet and exhaust camshafts on 1st cylinder face each other.

Scheme 865

Pull dust guard out of the special tool bore.

Scheme 866

Secure crankshaft with special tool 11 2 300 in TDC firing position of 1st cylinder.

Important!

Do not turn the engine back.

Remove special tool 11 2 300 before starting engine.

Scheme 867

Automatic Transmissions Only

Illustration does not show automatic transmission.

Important!

On engines with automatic transmissions, there is shortly before the special tool bore (1) a large bore (2) which can be confused with the special tool bore (1) If special tool 11 2 300 is secured in the correct bore (1), the engine can no longer be cranked at the central bolt.

Scheme 868

Unscrew studs.

Scheme 869

Place special tool 11 3 240 on camshafts.

Scheme 870

Note. The timing is correctly set if the special tool 11 3 240 rests without a gap on the cylinder head or protrudes up to 1 mm to the inlet side. The timing must be reset if the special tool 11 3 240 protrudes to the exhaust side. If necessary, adjust camshaft timing. Refer to 11 31 505 ADJUSTING CAMSHAFT TIMING (M52TU / M54 / M56) .

Scheme 871

Detach compressed air connection.

Remove special tool 11 3 450 .

Scheme 872

Fit oil pressure line with new seals.

Tightening torque of banjo bolt, (32 N.m.).

Scheme 873

Remove special tool 11 3 240 .

Scheme 874

Remove special tool 11 2 300 .

Install dust guard from inspection bore.

Scheme 875

Unfasten and remove special tool 11 4 220 .

Scheme 876

Install cylinder for chain tensioning piston, refer to 11 31 090 REMOVING AND INSTALLING/REPLACING CHAIN TENSIONING PISTON (M52 / M52TU / M54 / M56) .

Assemble engine.

Scheme 877

11 31 090 Removing and installing/replacing chain tensioning piston (M52 / M52TU / M54 / M56)

Important!

Spring pressure!

Unfasten cylinder for chain tensioning piston.

Installation

Replace sealing ring.

Tightening torque, refer to 11 31 8AZ in ENGINE - TIGHTENING TORQUES .

Scheme 878

Scheme 878: 11 31 090 Removing and installing/replacing chain tensioning piston (M52 / M52TU / M54 / M56)

Arrangement of components

Scheme 879

Cylinder for chain tensioning piston.
Sealing ring.
Spring.
Piston.

11 31 505 Adjusting camshaft timing (M52TU / M54 / M56)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

00 9 250
11 2 300
11 3 240
11 3 244
11 3 292
11 4 220
11 5 180
11 6 150

Before carrying out adjustment work

Check camshaft timing. Refer to 11 31 005 CHECKING CAMSHAFT TIMING (M52TU / M54 / M56) .

Crank engine in direction of rotation until cam tips on inlet and exhaust camshafts on 1st cylinder face one another.

Scheme 880

Secure crankshaft with special tool 11 2 300 in TDC position of 1st cylinder.

Scheme 881

Important!

Do not turn the engine back.

Remove special tools 11 2 300 / 11 5 180 before starting engine.

Unscrew studs.

Scheme 882

Remove double VANOS adjustment unit, refer to 11 36 010 REMOVING AND INSTALLING OR REPLACING DOUBLE VANOS ADJUSTMENT UNIT (M52TU / M54 / M56) .

Press down top of chain tensioner and lock off with special tool 11 3 292 .

Scheme 883

Important!

Cylinder for chain tensioning piston is under spring pressure.

Remove cylinder for chain tensioning piston.

Scheme 884

Install special tool 11 4 220 .

Fit adjusting screw to bow cover.

Scheme 885

Release screws (1) by half a turn.

Scheme 886

Release nuts (2) by two turns.

Release nuts (3) by one turn.

Scheme 887

Important!

Toothed shaft (4) slips very easily from splines.

Pull out toothed shaft (4) until approx. 1 mm of splines can be seen.

Scheme 888

Withdraw toothed shaft (5) up to stop.

Scheme 889

Fit special tool 11 3 240 to camshafts on cylinder 6. Align camshafts so that special tool 11 3 240 rests without gaps on cylinder head.

Scheme 890

Attach special tool 11 3 244 to special tool 11 3 240 and locate by way of spark plug thread.

Scheme 891

Press down chain tensioner at top and remove special tool 11 3 292 .

Scheme 892

Preload tensioning rail with special tool 11 4 220 by rotating adjusting screw with special tool 00 9 250 or standard torque wrench to 0.7 N.m.

Scheme 893

Preload cup spring slightly by pressing on sensor gear (1) and tighten nuts by hand.

Important!

Do not tighten down nuts fully.

Scheme 894

Remove gasket.

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

Keep sealing face clean and free of oil.

Scheme 895

Important!

Fit special tool 11 6 150 "without gasket" only.

If gasket remains underneath special tool 11 6 150 , camshaft timing will be "incorrectly" set.

Attach special tool 11 6 150 "without gasket", tighten nuts by hand and then tighten down uniformly until special tool 11 6 150 is in full contact with cylinder head.

Scheme 896

Insert screws (1) on exhaust side and initially tighten to approx. 5 N.m.

Scheme 897

Initially tighten nuts (2) on exhaust side and nuts (3) on inlet side to approx. 5 N.m.

Scheme 898

Tighten down screws (1) on exhaust side.

Tightening torque, refer to 11 31 3AZ in ENGINE - TIGHTENING TORQUES .

Scheme 899

Tighten down nuts (2) on exhaust side and nuts (3) on inlet side.

Tightening torque, refer to 11 31 11AZ in ENGINE - TIGHTENING TORQUES .

Scheme 900

Pull special tool 11 2 300 / 11 5 180 back until flywheel is no longer secured.

Scheme 901

Remove special tool 11 3 244 and special tool 11 3 240 .

Scheme 902

Crank engine twice in direction of rotation until cam tips on inlet and exhaust camshafts on 1st cylinder face one another.

Scheme 903

Secure crankshaft in firing TDC position with special tool 11 2 300 .

Important!

Do not turn the engine back.

Remove special tools 11 2 300 / 11 5 180 before starting engine.

Scheme 904

Fit special tool 11 3 240 to camshafts.

Scheme 905

Scheme 906

Unfasten and remove special tool 11 4 220 .

Scheme 907

Install cylinder for chain tensioning piston, refer to 11 31 090 REMOVING AND INSTALLING/REPLACING CHAIN TENSIONING PISTON (M52 / M52TU / M54 / M56) .

Scheme 908

Remove special tool 11 2 300 / 11 5 180 .

Scheme 909

Remove special tool 11 6 150 .

Install VANOS adjustment unit, refer to 11 36 010 REMOVING AND INSTALLING OR REPLACING DOUBLE VANOS ADJUSTMENT UNIT (M52TU / M54 / M56) .

Assemble engine.

Scheme 910

11 34 552 Removing and installing or replacing all valves (M52 / S52 / M52TU / M54 / M56)

(Cylinder head removed.)

Preliminary tasks are described in 11 12 503 DISASSEMBLING AND ASSEMBLING CYLINDER HEAD (M52 / S52 / M52TU / M54 / M56) .

Replace valve stem seals, refer to 11 34 560 REPLACING ALL VALVE STEM SEALS (M52 / S52 / M52TU / M54 / M56) .

Remove valves from cylinder head.

If necessary, check valve guide for wear, refer to 11 12 595 CHECKING A VALVE GUIDE FOR WEAR (M52 / S52 / M52TU / M54 / M56) .

If necessary, ream valve guide, refer to 11 12 600 REAMING A VALVE GUIDE (M52 / S52 / M52TU / M54 / M56) .

If necessary, remachine valve seat, refer to 11 12 527 REMACHINING A VALVE SEAT (M52 / S52 / M52TU / M54 / M56) .

Arrangement

Scheme 911

Scheme 911: 11 34 552 Removing and installing or replacing all valves (M52 / S52 / M52TU / M54 / M56)

Valve.
Valve-stem seal.
Lower plate spring.
Valve spring.
Top plate spring.
Valve tapers.

11 34 560 Replacing all valve stem seals (M52 / S52 / M52TU / M54 / M56)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

11 1 200
11 1 480
11 1 960

(Cylinder head removed.)

Preliminary tasks are described in 11 12 503 DISASSEMBLING AND ASSEMBLING CYLINDER HEAD (M52 / S52 / M52TU / M54 / M56) .

Remove all valve springs, refer to 11 34 715 REPLACING ALL VALVE SPRINGS (M52 / S52 / M52TU / M54 / M56) .

Remove valve stem seal with special tool 11 1 480 .

Scheme 912

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 913

Press valve stem seal firmly home by hand with special tool 11 1 200 .

Scheme 914

11 34 715 Replacing all valve springs (M52 / S52 / M52TU / M54 / M56)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

11 0 342
11 0 345
11 1 045
11 1 065
11 1 441
11 3 030
11 3 250

(Cylinder head removed.)

Preliminary tasks are described in 11 12 503 DISASSEMBLING AND ASSEMBLING CYLINDER HEAD (M52 / S52 / M52TU / M54 / M56) .

Brace bucket tappets with special tool 11 3 250 .

Lift out bearing strip with bucket tappet.

Installation

Only re-use used bucket tappets in the same tappet bore.

Scheme 915

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

Scheme 916

Insert special tool 11 1 441 from below in special tool 11 1 065 and secure with special tool 11 1 045 .

Scheme 917

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

Scheme 918

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

Remove valve spring and plate spring.

Scheme 919

Arrangement

Scheme 920

Valve.
Valve-stem seal.
Lower plate spring.
Valve spring.
Top plate spring.
Valve tapers.

11 36 010 Removing and installing or replacing double VANOS adjustment unit (M52TU / M54 / M56)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

00 9 250
11 2 300
11 3 240
11 3 450
11 4 220
11 6 170

Necessary Preliminary Tasks

Remove intake filter housing with air-mass flow sensor
Remove fan impeller with fan clutch and fan cowl, refer to «11 52 020 REMOVING AND INSTALLING/REPLACING FAN CLUTCH (S52 / S54 / M52 / M52TU / M54 / M56)»(/bmw/x5/e53-1999-2003/remont/mechanical/#engine-repair-instructions-x5-30l__11-52-020-removing-and-installingreplacing) .
Remove cylinder head cover, refer to «11 12 000 REMOVING AND INSTALLING, SEALING CYLINDER HEAD COVER (M52TU / M54 / M56)»(/bmw/x5/e53-1999-2003/remont/mechanical/#engine-repair-instructions-x5-30l__11-12-000-removing-and-installing) .
Remove spark plugs, refer to «12 12 011 REPLACING ALL SPARK PLUGS»(/bmw/x5/e53-1999-2003/remont/gauges-instrument-panels/#engine-electrical-system-repair-instructions-x5-30l__12-12-011-replacing-all-spark) .

Removal

Removal of double VANOS adjustment unit is described separately from installation. Assembly sequence for removal and installation is different.

Detach plastic cover for inlet camshaft.

Scheme 921

Unscrew oil pressure pipe.

Scheme 922

Mount special tool 11 3 450 with banjo bolt of oil pressure line.

Scheme 923

Important!

Cover double VANOS adjustment unit.

When the compressed air supply is connected, several drops of oil are sprayed out of the bore.

Scheme 924

Connect compressed air (2 to 8 bar).

Scheme 925

With compressed air supply connected, crank engine at least two revolutions in direction of rotation until cam tips on inlet and exhaust camshafts on 1st cylinder face each other.

Scheme 926

Pull dust guard out of the special tool bore.

Scheme 927

Secure crankshaft in firing TDC position with special tool 11 2 300 .

Important!

Remove special tool 11 2 300 before switching on the engine.

Scheme 928

Automatic Transmissions Only

Illustration does not show automatic transmission.

Important!

On engines with automatic transmissions, there is shortly before the special tool bore (1) a large bore (2) which can be confused with the special tool bore.

If special tool 11 2 300 is secured in the correct bore (1), the engine can no longer be cranked at the central bolt.

Scheme 929

Unscrew studs.

Scheme 930

Secure camshafts with special tool 11 3 240 .

Scheme 931

Detach compressed air connection.

Note. special tool 11 3 450 still remains fitted.

Scheme 932

Important!

Oil escapes after screw plugs have been removed. Have cleaning cloths and container ready. Make sure no oil runs onto belt drive. Remove any remnants of oil immediately with cleaning cloth.

Remove screw plugs, catch escaping oil on inlet and exhaust sides.

Scheme 933

Remove sealing caps with special tool 11 6 170 or with commercially available short flat nose pliers.

Scheme 934

IMPORTANT

Left-hand threads.

Release fitting screws on inlet and exhaust sides.

Scheme 935

Detach plug connections from camshaft sensor and solenoid valves on exhaust and inlet sides.

Scheme 936

Unscrew suspension eye.

Scheme 937

Release nuts and remove double VANOS adjustment unit.

Scheme 938

Important!

With double VANOS adjustment unit removed

Do not crank engine.

The toothed shaft on the inlet side may move and slip out of the spline teeth, the inlet camshaft is thus no longer non-positively connected and the valves could rest on the piston.

Installation

Installation of double VANOS adjustment unit is described separately from removal. Assembly sequence for removal and installation is different.

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

Scheme 939

Keep sealing faces clean and free of oil. Apply a thin and even coat of sealing compound Drei Bond 1209 to contact surface edges of separating face between cylinder head and double VANOS adjustment unit.

Replace seal.

Install and secure double VANOS adjustment unit.

Scheme 940

Attach plug connections of camshaft sensor and solenoid valves on exhaust and inlet sides.

Scheme 941

Important!

Left-hand threads.

Insert fitting screws for hydraulic piston on toothed shaft on inlet and exhaust sides and tighten down.

Tightening torque, (10 N.m.).

Scheme 942

Replace sealing caps and install with special tool 11 6 170 or with commercially available short flat nose pliers.

Scheme 943

Insert screw plugs with new sealing rings and tighten down.

Tightening torque, (50 N.m.).

Scheme 944

Fit suspension lug.

Scheme 945

Note. If the double VANOS adjustment unit has been replaced, you must check and, if necessary, adjust the camshaft timing. If work has been carried out which has "no" effect on the timing and it is assured that the timing adjustment is correct, the timing check described in the following does not have to be conducted.

IMPORTANT

Cylinder for chain tensioning piston is under spring pressure.

Remove cylinder for chain tensioning piston.

Scheme 946

Insert special tool 11 4 220 in cylinder head and bring adjustment screw into contact with tensioning rail.

Scheme 947

Preload tensioning rail with special tool 11 4 220 by rotating adjusting screw with special tool 00 9 250 or standard torque wrench to 0.7 N.m.

Scheme 948

Pull special tool 11 2 300 back until flywheel is no longer secured in position.

Scheme 949

Remove special tool 11 3 240.

Scheme 950

IMPORTANT

Cover double VANOS adjustment unit; when the compressed air supply is connected, several drops of oil are sprayed out of the bore.

Scheme 951

Connect compressed air (2 to 8 bar).

Scheme 952

With compressed air supply connected, crank engine twice in direction of rotation until cam tips on inlet and exhaust camshafts on 1st cylinder face each other.

Scheme 953

Secure crankshaft with special tool 11 2 300 in TDC position of 1st cylinder.

IMPORTANT

Do not turn the engine back. Remove special tool 11 2 300 before switching on the engine.

Scheme 954

Check camshaft setting

Fit special tool 11 3 240 to camshafts.

Scheme 955

If necessary, adjust camshaft timing. Refer to 11 31 505 ADJUSTING CAMSHAFT TIMING (M52TU / M54 / M56) .

Scheme 956

Detach compressed air connection.

Remove special tool 11 3 450.

Scheme 957

Fit oil pressure line with new seals.

Tightening torque, (32 N.m.).

Scheme 958

Unfasten and remove special tool 11 4 220.

Scheme 959

Install cylinder for chain tensioning piston. Refer to 11 31 090 REMOVING AND INSTALLING/REPLACING CHAIN TENSIONING PISTON (M52 / M52TU / M54 / M56) .

Scheme 960

Remove special tool 11 3 240.

Scheme 961

Remove special tool 11 2 300.

Assemble engine.

11 36 570 Replacing solenoid valve for inlet side on VANOS adjustment unit

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

32 2 110

Necessary Preliminary Tasks

Read out fault memory of DME control unit.
Check stored fault messages.
Switch off ignition.

Unlock hose (1) and detach.

Unlock plug (2) and remove.

Scheme 962

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.

Do not damage oil line when releasing solenoid valve.

Release solenoid valve with special tool 32 2 110 .

Scheme 963

Installation

Tightening torque, (30 N.m.).

Now clear the fault memory.

11 36 575 Replacing solenoid valve for exhaust side on VANOS adjustment unit

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

11 6 420

Necessary Preliminary Tasks

Read out fault memory of DME control unit.
Check stored fault messages.
Switch off ignition.

Unlock plug (1) and remove.

Cut through cable tie (2).

Scheme 964

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 965

Installation

Tightening torque, (30 N.m.).

Now clear the fault memory.

11 40 000 Checking engine oil pressure

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

11 4 050
13 3 061
13 3 063
13 6 051
13 6 054

Note. For engine oil pressure to be checked, oil pressure switch must be removed and special tools must be installed and connected.

To avoid an excess discharge of oil when removing oil pressure switch

Unscrew oil filter cap; the engine oil flows out of the oil filter housing into the oil sump.

Installation

Replace sealing ring.

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

Remove oil pressure switch.

Installation

Tightening torque, (27 N.m.).

Install special tool 11 4 050 with sealing ring (1) in place of oil pressure switch.

Scheme 966

Checking Engine Oil Pressure With DIS Tester

Attach special tool 13 6 054 with sealing ring (1) and special tool 13 6 051 and connect to DIS Tester.

Checking Engine Oil Pressure With Pressure Gauge

Install special tool 13 3 063 and special tool 13 3 061 (pressure gauge).

Start engine and check engine oil pressure.

Specified value, refer to ENGINE - TECHNICAL DATA .

Scheme 967

11 41 000 Removing and installing/replacing oil pump (M52TU / M54 / M56)

Remove oil sump, refer to 11 13 000 REMOVING AND INSTALLING, SEALING OR REPLACING OIL SUMP (M52TU / M54 / M56) or 11 13 000 REMOVING AND INSTALLING/REPLACING OIL SUMP (M54) .

CAUTION

Left-hand threads. Unfasten nut.

Installation

Tightening torque, refer to 11 41 4AZ in ENGINE - TIGHTENING TORQUES .

Scheme 968

Remove sprocket with chain.

Installation

Align splines of chain wheel and oil pump shaft to each other.

Scheme 969

Version 1

Oil pump integrated in oil scraper

Release screws (1), remove oil pump with oil scraper.

Scheme 970

Version 2

Oil pump and oil scraper - two parts

Release screws and remove oil pump intake pipe.

Scheme 971

Version 2

Oil pump and oil scraper - two parts

Release screws and remove oil pump.

Scheme 972

Installation

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

Scheme 973

Installation

Replace O-ring on intake pipe.

Scheme 974

If necessary, remove control piston.

Press sleeve downwards with suitable drift.

CAUTION

The sleeve for the control plunger is under spring pressure.

Remove circlip.

Scheme 975

Installation

Scheme 976

Control plunger.
Spring.
Sleeve.
O-ring (replace).
Circlip.

11 42 020 Removing and installing complete full-flow oil filter (M52 / S52 / M52TU / M54 / M56)

Remove intake air housing with air-mass flow sensor.

Unfasten oil filter cover to allow oil to flow out of main flow oil filter housing and back into oil pan.

This operation is described in BMW engine oil service, refer to 00 00 250 BMW ENGINE OIL SERVICE INCL. SUPPLEMENTARY SERVICE (M54 / M56) .

Remove alternator, refer to 12 31 020 REMOVING AND INSTALLING OR ALTERNATOR (M52, M52TU, S50US, S52, M54, M56) .

If necessary, empty supply tank for power steering.

If necessary, remove supply tank (lines remain connected).

If necessary, remove vane pump for power steering (lines remain connected).

If necessary, remove alternator drive belt tensioner.

Remove connector for oil pressure switch.

If necessary, disconnect plug for oil temperature switch.

Disconnect oil pressure line for VANOS adjustment unit from oil filter housing.

Unfasten screws and remove complete full-flow oil filter.

Scheme 977

Scheme 977: 11 42 020 Removing and installing complete full-flow oil filter (M52 / S52 / M52TU / M54 / M56)

Installation

Check dowel sleeves for damage and correct installation position.

Scheme 978

Installation

Replace seal.

Top up engine oil.

Scheme 979

11 51 000 Removing and installing complete water pump (M52 / S52 / M52TU / M54 / M56)

Remove alternator drive belt, refer to 11 28 010 REPLACING ALTERNATOR DRIVE BELT (M52 / S52 / M52TU / M54 / M56) .

Note. M52TU / M54 / M56: Water drain plug is located on exhaust side on cylinder 2 in engine block.

Scheme 980

Scheme 980: 11 51 000 Removing and installing complete water pump (M52 / S52 / M52TU / M54 / M56)

Drain and dispose of coolant.

Installation

Replace seal.

Tightening torque, (25 N.m.).

Vent cooling system and check for leaks, refer to 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR LEAKS (M54 / M56) .

Release belt pulley.

Scheme 981

Release water pump.

Scheme 982

Tighten two screws (M 6) into thread of water pump and release water pump out of timing case.

Scheme 983

Installation

Replace O-ring and coat with coolant as anti-friction agent.

Scheme 984

11 52 020 Removing and installing/replacing fan clutch (S52 / S54 / M52 / M52TU / M54 / M56)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

11 5 030
11 5 040

If necessary, remove air duct.

Important!

Left-hand threads.

Using special tool 11 5 030 , grip pulley and unfasten cap nut from water pump using special tool 11 5 040 .

If necessary, unfasten fan cowl.

Take the fan wheel with fan coupling off the water pump and remove.

Scheme 985

Installation

Tighten down fan impeller using special tool 11 5 040 .

Tightening torque, (45 N.m.).

Note. When using special tool 11 5 040 , 30 N.m. on the torque wrench scale are equivalent to a tightening torque of 40 N.m.

Scheme 986

Unfasten screws and detach fan from fan coupling.

Scheme 987

11 53 000 Removing and installing/replacing coolant thermostat (M52TU / M54 / M56)

Remove fan clutch with fan impeller, refer to 11 52 020 REMOVING AND INSTALLING/REPLACING FAN CLUTCH (S52 / S54 / M52 / M52TU / M54 / M56) .

Drain and dispose of coolant.

Note. The water drain plug is located on the exhaust side on cylinder 2 in the engine block.

Installation

Replacing sealing ring on water drain plug.

Tightening torque, (25 N.m.).

Vent cooling system and check for leaks, refer to 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR LEAKS (M54 / M56) .

Pull locks and disconnect water hoses.

Installation

Refer to general instructions for work on cooling system. Refer to 17 00 ... INSTRUCTIONS FOR WORKING ON COOLING SYSTEM .

Scheme 988

Scheme 988: 11 53 000 Removing and installing/replacing coolant thermostat (M52TU / M54 / M56)

Loosen nut (1).

Release screws on thermostat housing, remove thermostat housing.

Scheme 989

Installation

Keep sealing faces clean and free of oil.

Scheme 990

Note. Coolant thermostat is integrated in coolant thermostat housing and can only be replaced as a single unit.

Installation

Replace seal (1).

Scheme 991

11 61 050 Removing and installing intake air manifold (M54)

Instructions for disconnecting and connecting battery, refer to 12 00... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .

Disconnect negative battery lead.

Remove engine cover.

CAUTION

Do not mix up oxygen monitor sensors for cylinders 1 to 3 and 4 to 6 at plug connection to wiring harness. Mark plug connections.

Unclip plug connections (1) from holders.

Detach battery positive lead from intake air manifold.

Detach retainer (2) from battery positive lead.

Scheme 992

Press lock and detach vent hose from cylinder head cover.

Scheme 993

Pull off retainer (1).

Disconnect plug connection (2) for intake air temperature sensor.

Detach terminal strip (3) from fuel injectors and place to one side.

Scheme 994

Disconnect plug connection (1) on tank venting valve.

Remove tank venting valve from retainer (2) on manifold.

Scheme 995

Note. For a better overview, this work step is shown on an engine that has been removed.

CAUTION

Catch and dispose of fuel as it escapes.

Instructions for removing and installing fuel hoses, refer to 13 53 540 REPLACING, SEALING FUEL HOSES .

Unclip fuel line (1) from holder (2).

Unlock fuel line (1).

Scheme 996

Loosen guide tube for dipstick.

Press lock and detach return line from guide tube for oil dipstick.

Remove throttle assembly, refer to 13 54 030 REMOVING AND INSTALLING/SEALING THROTTLE ASSEMBLY (M54) .

Disconnect plug connections and lay cable duct to one side.

Unclip plug connection (1) for knock sensors from holder.

Release nut (2) on manifold support.

Scheme 997

Release nuts on manifold.

Note. Engines with air injection

Detach vacuum line on reverse side of intake air manifold.

Remove intake air manifold.

Scheme 998

Installation

Check gaskets on all cylinders and replace if necessary.

Scheme 999

Installation

Check rubber dampers and if necessary replace together with manifold support.

Scheme 1000

11 62 140 Removing and installing, sealing or replacing both exhaust manifolds with catalytic converter (M54)

Remove intermediate muffler, refer to 18 12 061 REPLACING INTERMEDIATE MUFFLER (M62, M54) .

Remove reinforcement plate, refer to FRONT AXLE SUPPORT .

CAUTION

The article "removing and installing reinforcement plate" contains important installation instructions. Protect stabilizer against paint damage.

Remove retaining bracket and rubber mount from stabilizer.

Detach left and right stabilizer from stabilizer.

Installation

Replace nuts. Tightening torque, refer to TORQUE SPECIFICATIONS .

Note. The oxygen sensors are in danger of being damaged when the exhaust manifolds are removed and installed.

Remove oxygen control sensors, refer to 11 78 510 REPLACING OXYGEN CONTROL SENSOR (M52TU / M54 / M56) .

Remove cover for fuel injectors.

Scheme 1001

Note. Do not mix up oxygen monitor sensors for cylinders 1 to 3 and 4 to 6 at plug connection to wiring harness.

Mark plug connections.

Unclip the cable from the retainer. Disconnect plug connection. Unclip cable on rear side of engine from cable guide.

Remove oxygen monitor sensors, refer to 11 78 613 REPLACING BOTH OXYGEN MONITOR SENSORS (M52TU / M54 / M56) .

Note. Rear exhaust manifold with catalytic converter can only be removed after front exhaust manifold with catalytic converter has first been removed.

Remove front exhaust manifold with catalytic converter.

Remove rear exhaust manifold with catalytic converter.

Installation

Clean sealing faces, replace gaskets.

Coat thread with copper paste -CRC-.

Replace nuts.

Tightening torque, refer to 11 62 1AZ in ENGINE - TIGHTENING TORQUES .

11 78 510 Replacing oxygen control sensor (M52TU / M54 / M56)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

11 7 020

Read out fault memory, clear if necessary.

Refer to 13 00 002 CHECKING FUNCTION OF DIGITAL ENGINE .

Note. The plug connection must be disconnected before the oxygen control sensor is removed.

If the plug connection separation point is below the cover for the fuel injectors

If necessary, remove lower section of microfilter housing.

Remove cover from fuel injectors.

Unclip oxygen control sensor cable from retainer.

Disconnect plug connection for oxygen control sensor.

Release oxygen control sensor with special tool 11 7 020 .

Scheme 1002

Installation

The threads of new oxygen sensors are already coated with Never Seez Compound.

If an oxygen sensor is used again, apply a thin and even coat of Never Seez Compound to the thread only.

Part of oxygen control sensor which projects into exhaust system branch must not be cleaned or come into contact with lubricant.

Installation

Secure oxygen control sensor with special tool 11 7 020 .

Tightening torque, (50 N.m.).

Pay attention to cable routing of oxygen control sensor.

Scheme 1003

11 78 613 Replacing both oxygen monitor sensors (M52TU / M54 / M56)

Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required

11 7 020
11 7 030

Read out fault memory, clear if necessary.

Refer to 13 00 002 CHECKING FUNCTION OF DIGITAL ENGINE .

Illustrations show M54.

Remove cover from fuel injectors.

Note. Do not mix up oxygen monitor sensors for cylinders 1 to 3 and 4 to 6 at plug connection to wiring harness.

Mark plug connections.

Scheme 1004

Unclip the cable from the retainer. Disconnect plug. Unclip cable on rear side of engine from cable guide.

Note. On vehicles with automatic transmission: In event of unfavorable tolerances, accessibility to the oxygen monitor sensor from cylinders 4 to 6 is only possible after the exhaust system has been removed.

Release oxygen monitor sensor from cylinders 1 to 3 with special tool 11 7 030 .

Release oxygen monitor sensor from cylinders 4 to 6 with special tool 11 7 020 .

Scheme 1005

Installation

The threads of new oxygen monitor sensors are already coated with Never Seez compound.

If an oxygen monitor sensor is reused, only apply a thin and uniform coat of Never Seiz compound to thread.

Part of oxygen control sensor which projects into exhaust system branch must not be cleaned or come into contact with lubricant.

Installation

Secure oxygen monitor sensor for cylinders 1 to 3 with special tool 11 7 030 .

Secure oxygen monitor sensor for cylinders 4 to 6 with special tool 11 7 020 .

Tightening torque, (20 N.m.).

Scheme 1006

Cover oxygen monitor sensors when applying underseal.

Pay attention to cable routing of oxygen monitor sensors.

Engine - Repair Instructions - x5 (3.0l) BMW X5 E53

00 00 250 BMW engine oil service incl. supplementary service (M54 / M56)

Scheme 632

Scheme 633

Scheme 634

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

Scheme 635

Scheme 636

11 00 045 Checking absolute compression of all cylinders

Scheme 637

11 00 050 Removing and installing engine (M54)

Scheme 638

Scheme 639

Scheme 640

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Scheme 643

11 12 000 Removing and installing, sealing cylinder head cover (M52TU / M54 / M56)

Scheme 644

Scheme 645

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11 12 100 Removing and installing/sealing cylinder head (M54)

Scheme 650

Scheme 651

Scheme 652

Scheme 653

Scheme 654

Scheme 655

Scheme 656

Scheme 657

11 12 101 Replacing cylinder head gasket (M52 / S52 / M52TU / M54 / M56)

11 12 503 Disassembling and assembling cylinder head (M52 / S52 / M52TU / M54 / M56)

Scheme 658

Scheme 659

Scheme 660

Scheme 661

Scheme 662

11 12 527 Remachining a valve seat (M52 / S52 / M52TU / M54 / M56)

Scheme 663

Scheme 664

11 12 595 Checking a valve guide for wear (M52 / S52 / M52TU / M54 / M56)

Scheme 665

Scheme 666

11 12 600 Reaming a valve guide (M52 / S52 / M52TU / M54 / M56)

Scheme 667

11 12 719 Resurfacing cylinder head sealing surface (M52 / M52TU / M54 / M56)

Scheme 668

Scheme 669

Scheme 670

11 12 729 Checking cylinder head for watertightness (M52TU / M54 / M56)

Scheme 671

Scheme 672

Scheme 673

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Scheme 675

Scheme 676

11 13 000 Removing and installing, sealing or replacing oil sump (M52TU / M54 / M56)

Scheme 677

Scheme 678

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Scheme 682

11 13 000 Removing and installing/replacing oil sump (M54)

Scheme 683

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Scheme 691

11 14 110 Removing and installing lower timing case cover (M52 / S52 / M52TU / M54)

Scheme 692

11 14 141 Replacing radial seal in lower timing case cover

Scheme 693