Thermostat Housing: Service and Repair
11 42 035 Removing and installing/replacing the thermostat housing N55Special 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.