2008 6.6L Duramax – OIL PUMP INSTALLATION

1. Install a new O-ring to the engine block.
2. Lubricate the O-ring with engine oil.
3. Install the oil pump.
NOTE: Refer to Fastener Notice.
4. Install the oil pump bolts.
Tighten: Tighten the oil pump bolts to 21 N.m (15 lb ft).

5. Install the oil pump drive gear and crank sensor reluctor assembly.

6. Install the oil pump driven gear.

7. While holding the secondary oil pump shaft with a hex driver, install the oil pump driven gear nut.
Tighten: Tighten the oil pump driven gear nut to 100 N.m (74 lb ft).