11 00 050 Removing and installing engine (M52TU / M54 / M56)

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Special tools required:

11 0 000
51 2 16

Instructions for disconnecting and connecting battery.

Disconnect negative battery lead.

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.

Fig 1: Moving Engine Hood To Assembly Position

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Hold engine hood, unhook damper on hood.

Slide special tool 51 2 160 over damper.

Open engine hood completely and reconnect damper with special tool 51 2 160 to hood.

Fig 2: Sliding Special Tool 51 2 160 Over Damper

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Remove microfilter.

Open cable duct on lower section of microfilter housing (2) and feed out cable(s).

Release screws (1) and remove lower section of microfilter housing (2).

Fig 3: Releasing Screws & Removing Lower Section Of Microfilter Housing

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Remove engine underguard. 51 11 000 REMOVING AND INSTALLING COMPLETE FRONT BUMPER (FROM 10/01)

Remove transmission, refer to REMOVAL & INSTALLATION .

Remove A/C compressor drive belt. See 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. See 64 52 520 REMOVING AND INSTALLING / REPLACING COMPLETE A/C COMPRESSOR

NOTE: Lines remain connected.

Drain and dispose of coolant. See 17 00 005 DRAINING AND ADDING COOLANT (M54, M56)

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.

Pull locks (1) and disconnect water hoses.

Installation:

Remove radiator. See 17 11 000 REMOVING AND INSTALLING RADIATOR (M52TU, M54, M56)

Fig 4: Pulling Locks & Disconnecting Water Hoses

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Remove cover from fuel injectors.

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

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

Disconnect water hoses from water pipe and from heating valve.

Unfasten engine section of wiring harness and place to one side with cable duct.

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

NOTE: Lines remain connected.

Fig 5: Identifying Reservoir For Power Steering

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Remove fan clutch with fan impeller from water pump. See 11 52 020 Removing and installing/replacing fan clutch (S52 / S54 / M52 / M52TU / M54 / M56)

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

Remove vane pump for power steering and tie back to one side. See POWER STEERING VANE PUMP (M52/M54)

NOTE: Lines remain connected.

Suspend engine from special tool 11 0 000.

Fig 6: Suspending Engine From Special Tool

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Front and rear suspension arrangement

Fig 7: Identifying Front & Rear Suspension Arrangement

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Unfasten right ground wire.

Unscrew left and right engine mounts.

Carefully lift out engine.

Fig 8: Unfastening Right Ground Wire

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