Engine lubrication, oil cooler,  M110

Checking thermostat in oil filter

 

 

18-120 Checking thermostat in oil filter

 

Thermostat opening temperatures

 

 

Application
Begin of opening °C
Fully opened °C/mm
Up to December 1979
95 ±4
approx. 110/8 + 2
Starting January 1980
110 ±4
approx. 125/8 + 2

 

Special tool

 

r:
m110 - 0751-1.jpg

 

Temperature sensor for measuring engine oil temperature
■ J) –
116 589 27 21 00

 

Note
m110 - 0751-2.jpg
Engines without air oil cooler have no thermostat in oil filter.
Checking
1    Exchange oil dipstick against flexible temperature sensor.
2    Run engine at high speed and watch temperature gage.

 

3 At 95 °C ± 110 °C engine oil temperature the start of the opening period of thermostat should be clearly noticeable manually by the increasing oil temperature on oil cooler.

 

18.2-120/1 F3