64 11 262 Removing and installing/replacing auxiliary water pump

WARNING: This page is about a different car, the 2010 BMW M5, 2009 BMW M5, and 2008 BMW M5. 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 LEFT INTAKE FILTER HOUSING (S85) .
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.

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.