Auxiliary Water Pump: Service and Repair

64 11 262 Removing And Installing/replacing Auxiliary Water Pump







WARNING:
Danger of scalding.

Only perform this work after engine has cooled down.







Recycling
Coolant emerges when coolant lines are detached. Have a suitable collecting container ready.

Catch and dispose of emerging coolant.

Observe country-specific waste-disposal regulations.







Necessary preliminary tasks:
- N45/N46 only:
Remove suction filter housing.

- Disconnect coolant hoses from auxiliary water pump







NOTE: Illustrations show a vehicle with an M47T2 engine.

Unfasten plug connection (1) and disconnect.

Release hose clamps (2) and detach coolant hoses (3) from auxiliary water pump (4).

Installation:
Follow instructions for working on cooling system.

Fill and vent cooling system.

Pull auxiliary water pump (4) in direction of arrow out of front engine bracket (5).







Installation:
Install auxiliary water pump (1) in front engine bracket so that rubber mounts (2) slide exactly in associated locators (3).