Primary bearing (page 3 of 4)

19. Remove and discard 2 ’O’ rings from oil pump.

20. Remove and discard Belleville washer.
21. Using an air impact wrench with a torque capacity of ± 300 Nm, remove primary bearing nut.

NOTE: Initially start to undo nut in the minimum position of the impact wrench, increase torque until nut is released.

22. Using a small screwdriver, lever out seal from primary bearing.

23. Position thrust button 44-023 into primary shaft.
24. Assemble tool 44-024 underneath the exterior ring of primary bearing.
25. Tighten centre bolt of tool 44-024 and remove primary bearing.

Refit

1. Clean primary bearing bore and shaft.
2. Clean sealant from threads in oil pump drive shaft and clean oil pump housing.
3. Position primary bearing, numbers on bearing facing outwards.

4. Drift in primary bearing using tool 44-022.
5. Fit and tighten nut using an air impact wrench for sufficient duration until a minimum torque of 180 Nm is achieved.
6. Fit new Belleville washer.