64 11 262 Removing and installing/replacing auxiliary water pump

WARNING: This page does not describe the selected car, but rather 16 other vehicles, including the 2007 BMW M5, 2007 BMW 550i, 2007 BMW 530xi, 2007 BMW 530i, and 2007 BMW 525xi. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Danger of scalding!
Only perform this work after engine has cooled down.

Necessary preliminary tasks:

If necessary, remove intake filter housing. See 13 71 000 REMOVING AND INSTALLING INTAKE FILTER HOUSING .
Disconnect coolant hoses from auxiliary water pump.

Unlock fast-release couplings (1) and detach coolant hoses from auxiliary water pump (4).

Installation:

Fill and vent cooling system. See 17 00 005 DRAINING OFF AND TOPPING UP COOLANT .

If necessary, release expander rivet (2).

Unfasten plug connection (3) and disconnect.

Fig 1: Unlocking Fast-Release Couplings

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Ensure correct routing of cables.

Remove auxiliary water pump (4) in direction of arrow.

Replacement:

Detach auxiliary water pump fixture (1) in direction of arrow from auxiliary water pump (2).

Installation:

Make sure auxiliary water pump (2) is correctly seated in auxiliary water pump fixture (1).

Fig 2: Detaching Auxiliary Water Pump Fixture

Courtesy of BMW OF NORTH AMERICA, INC.