Removing and Installing/Replacing Oil Suction Pump

11 41 050 - Removing and installing/replacing oil suction pump (S65)





Special tools required:
- 11 6 251
- 11 6 252
- 11 6 254






Important!
Excessively low or high play between the gearwheel pairs results in failure of the oil supply.





Necessary preliminary tasks:
- Remove engine oil sump Service and Repair.
- Remove oil pump 11 41 000 Removing and Installing/Replacing Oil Pump.





Release screws (1).

Tightening torque. 11 41 3AZ. Mechanical Specifications

Remove oil pump (2).





Replacing gear wheels

Necessary preliminary tasks:
- Remove vibration damper Service and Repair.
- Remove radial shaft seal Service and Repair at front.





Mount special tool 11 6 254 on crankcase.

Secure special tool 11 6 252 with magnetic base to special tool 11 6 254.

Note:
Special tool 11 6 254 can only be secured to the crankcase with one screw.

Picture shows (S85).





Important!
The oil pump chain of the oil suction pump must be removed.

The chain tensioner must not exert any tension on the oil suction pump.

Align special tool 11 6 251 with its measuring shaft (2) vertically to gearwheel (1).

Turn oil suction pump gearwheel (1) to stop.

Set special tool 11 6 251 to zero.





Turn oil suction pump gearwheel (1) in direction of arrow to stop.





Backlash on oil suction pump min. 0.06 to max. 0.08 mm.

If necessary, correct oil suction pump adjustment.





Adjust oil suction pump (2) with a rubber mallet on pump housing in direction of arrow.

Tightening torque 11 41 3AZ. Mechanical Specifications





Assemble engine.