FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

Thermostat Housing: Service and Repair

11 42 035 Removing and installing/replacing the thermostat housing N55

Special tools required:





Necessary preliminary work:
^ Loosen oil lines on thermostat housing.





Loosen oil filter housing with special tool 11 9 240/

Note:
The remaining engine oil can flow back into the engine oil sump.





Release screws (1).

Note:
Catch escaping engine oil with suitable auxiliary materials.

Remove thermostat housing.





Installation Note:
Replace gasket (1).





Assemble engine.

Checking engine oil level:

^ Park vehicle on a horizontal surface.
^ Allow engine at normal operating temperature to run for three minutes with increased revs (approx. 110rpm)
^ Read off engine oil level in instrument panel or on Control Display
^ Top up engine oil if necessary.