928 S V8-4957cc 5.0L (1985)
Oil Pump: Service and Repair
Oil Pump Replace
ASSEMBLY INSTRUCTIONS OIL PUMP, REMOVING AND INSTALLING
Removing
1. Lock oil pump drive wheel with special tool 9157, unscrew retaining nuts and pull off drive wheel.
Note: Use special tool 9157/1 to lock oil pump drive wheels with HTD tooth shape (83 models onward).
2. Unscrew the oil pump mounting bolts and remove oil pump.
Installing Note:
Measure axial play before installation. The measurement must be carried out with the pump dry, in other words without oil.
1. Use gauge holder VW 387 and threaded section to measure axial play.
Axial play 0.08 to 0.12 mm
2. If necessary, remove inner rotor.
Size 21 -0.080 mm
-0.095 mm
3. When installing a replacement oil pump, do not remove transport fixture until mounting bolts have been tightened.
