Coolant Reservoir: Service and Repair

17 11 100 - Removing and installing/replacing coolant expansion tank (N53, N54)





Necessary preliminary tasks:
- Drain coolant Service and Repair from radiator





N54: Unclip vacuum hoses.
Unlock and detach coolant hose (1).
Release screws (2).
Tightening torque 17 11 3AZ 17 11 Radiator, Expansion Tank, Lines (N52, N52K, N51, N54, N45, N46).
Raise expansion tank (3) slightly until plugs on coolant level switch and lower coolant hose are accessible.
Unlock plugs on coolant level switch and lower coolant hose and disconnect.
Remove coolant expansion tank (3).

Installation:
Insert locating pin in rubber grommet.





Vent cooling system 17 00 039 Venting Cooling System and Checking For Water Leaks and check for leaks.