Service Manual

ISB, ISBe and QSB (Common Rail [...] Lubricating Oil Pump
Section 7 - Lubricating Oil System - Group 07 Page 7-31
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Remove the belt guards. Refer to Procedure Procedure
008-001
Remove the seawater pump drive belt. Refer to
Procedure Procedure 008-126
Remove the water pump drive belt. Refer to Procedure
Procedure 008-002
Remove the fan hub. Refer to Procedure Procedure
008-039
Remove the crankshaft position sensor. Refer to
Procedure Procedure 019-365 in Troubleshooting and
Repair Manual, CM850 Electronic Control System,
Bulletin 4021337.
Remove the vibration damper and tone wheel. Refer to
Procedure Procedure 001-051 or Refer to Procedure
Procedure 001-052
Remove the front gear cover. Refer to Procedure
Procedure 001-031
Remove
Remove the four mounting capscrews (1, 2, 3, and 4).
Remove the lubricating oil pump from the bore in the
cylinder block.
Initial Check
Measure the gear backlash.
Lubricating Oil Pump Gear Backlash Limits
mm in
0.170 MIN 0.007
0.300 MAX 0.012
If the backlash is out of specification, the lubricating oil
pump must be replaced.