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

Remove alternator Drive Belt .

NOTE: M52 / S52
Water drain plug is located on exhaust side between cylinders 4 and 5 in engine block (illustration).
M52TU / M54 / M56
Water drain plug is located on exhaust side on cylinder 2 in engine block.

Fig 1: Locating Water Drain Plug

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Drain and dispose of coolant.

Installation:

Replace seal.

Tightening torque, see 11 11 5AZ in ENGINE - TIGHTENING TORQUES .

Vent cooling system and check for leaks.

Release belt pulley.

Fig 2: Releasing Belt Pulley

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Release water pump.

Fig 3: Releasing Water Pump

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

Fig 4: Tightening Two Screws (M 6) Into Thread Of Water Pump

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Installation:

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

Fig 5: Replacing O-Ring

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