Auxiliary Water Pump: Service and Repair

64 12 570 Replacing Auxiliary Water Pump For Independent/Auxiliary Heater

Special tools required:







WARNING:
Scalding hazard.
Work on the cooling system may only be carried out when it 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:
- Remove left floor assembly cover







NOTE: Clamp off coolant hoses







Disconnect coolant hoses (1) with special tool 13 3 010 and release relevant hose clamps.
Release screw (2).
Detach auxiliary water pump (3) and disconnect associated plug connection.
Tightening torque 64 12 3AZ.







After installation:
- Fill and vent cooling system and check for leaks