Oil Pump Active On Demand Coupling (AOC), Replacing
Oil pump active on demand coupling (AOC), replacing
Note! As the illustrations in this service information are used for different model years and/or models, some variation may occur. However, the essential information is always correct.
Preparatory work
Remove:
- the rear part of the exhaust system and the propeller shaft from the flange for the Active on Demand Coupling. See Final drive, replacing Final Drive, Replacing
- the flange from the Active on Demand Coupling. See Pinion seal coupling (AOC), replacing Pinion Seal Coupling (AOC), Replacing.
Removal
Removing the oil pump
Ignition off.
Note! Thoroughly clean around the oil pump before beginning removal.
Position a container underneath the Active on Demand Coupling.
Remove:
- the connector from the Differential Electronic Module (DEM) for the oil pump for the Active on Demand Coupling
- the cable harness mountings.
Remove the 2 screws for the oil pump. Pull the pump straight out of the Active on Demand Coupling.
Note! Later versions of the oil pump have the socket for the cable harness on the side of the oil pump housing. The cable harness is shorter. This version supersedes all previous versions, including as a replacement part.
Installation
Note! For tightening torques, see Tightening Torque
Installing the oil pump
Thoroughly check that the oil pump seat in the Active on Demand Coupling is clean. There must not be any lint from paper or cloths.
Check that the new O-rings are in position. Lubricate the O-rings using oil for the Active on Demand Coupling, P/N 116 1641 (1 liter container).
Install the oil pump. Press the pump in as far as possible. Lightly tighten the 2 M5 screws alternately. Tighten. See Tightening Torque
Connect the connector.
Finishing
Fill the AOC (Active on Demand Coupling) with oil. Check the oil level. See Active on Demand Coupling (AOC), replacing Service and Repair.
Install the propeller shaft and the exhaust system. See Final drive, replacing Final Drive, Replacing.