Coolant Reservoir: Service and Repair

17 11 100 Removing And Installing/Replacing Coolant Expansion Tank (N20, N54, N54T, N52K)







Necessary preliminary tasks:
- Follow notes for carrying out repair work on the cooling system.
- Using a suitable tool, disconnect coolant line on coolant expansion tank.







N54 and N54T only: Loosen the vacuum line at the clamps (1) of the expansion tank.
Unfasten screws (2).
Tightening torque 17 10 4AZ.
Unlock and disconnect coolant hoses (3).
Raise expansion tank (4)







Unlock connector (1) on coolant level switch and disconnect.
Remove expansion tank (2).

Installation note:
Make sure retaining pin (3) is fitted correctly in rubber mount (4).







Assemble engine.
Top up coolant.
Check cooling system for leaks.