Service Manual

Hydraulic Pump Drive ISB, ISBe and QSB (Common Rail [...]
Page 9-8 Section 9 - Drive Units - Group 09
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Inspect the hydraulic pump drive for cracks, broken teeth,
and other damage.
Inspect the inside diameter of the drive gear bore for
excessive wear or damage; replace if necessary.
Install
Support the pump in place on the bracket.
Insert the bolts through the bracket and the pump.
Install the nuts on the end of the bolts.
Alternately tighten the bolts.
Torque Value: 41 N•m [ 30 ft-lb ]
Use a new gasket and install the hydraulic pump.