Thermostat Housing: Service and Repair

11 42 035 Removing And Installing/Replacing The Thermostat Housing N55

Special tools required:







Necessary preliminary tasks:
- 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.