Service Manual

Lubricating Oil Pump ISB, ISBe and QSB (Common Rail [...]
Page 7-34 Section 7 - Lubricating Oil System - Group 07
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Measure the clearance of the gerotor drive/gerotor
planetary to port plate.
Gerotor Drive/Planetary to Port Plate Limit
mm in
0.127 MAX 0.005
Measure the gear backlash.
Backlash Limits (used pump)
mm in
0.170 MIN 0.007
0.300 MAX 0.012
Install
CAUTION
Failure to fill the pump with oil during installation can
result in a slow prime at initial engine start-up,
resulting in severe engine damage.
Lubricate the lubricating oil pump with clean 15W-40
engine oil.
CAUTION
To reduce the possibility of engine damage, make
sure the idler gear pin is installed in the locating bore
in the cylinder block.
Install the lubricating oil pump.
NOTE: If installing a new lubricating oil pump ensure that
the pump is correct for your engine. For example,
lubricating oil pumps for 4 and 6 cylinder engines are
physically interchangeable, but have different flow
characteristics.