11 51 000 Removing and installing complete water pump (M52 / S52 / M52TU / M54 / M56)
WARNING: This page does not describe the selected car, but rather 33 other vehicles, including the 2006 BMW 325Ci, 2005 BMW 325xi, 2005 BMW 325i, 2005 BMW 325Ci, and 2004 BMW 325xi. However, it is still accessible from the selected car via links, so may be relevant.
Remove alternator drive belt. See 11 28 010 Replacing alternator drive belt (M52 / S52 / M52TU / M54 / M56)
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.
Drain and dispose of coolant.
Installation:
Replace seal.
Tightening torque, refer to 11 11 5AZ in ENGINE - TIGHTENING TORQUES .
Vent cooling system and check for leaks.
Release belt pulley.
Release water pump.
Tighten two screws (M 6) into thread of water pump and water pump out of timing case.
Installation:
Replace O-ring and coat with coolant as anti-friction agent.