Preparing The Fuel Injection Pump
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Hold the fuel pump by the drive gear in a vice with copper jaw liners.
- Loosen the gear nut until the nut is even with the end of the gear shaft.
- Remove the gear from the tapered shaft of the injection pump.
- Separate the injection pump and adapter by removing the 3 bolts and spacers.
- Inspect the O-ring for damage on the pump adapter and replace, if necessary. Lubricate the O-ring with clean engine oil.
- Clean all mating surfaces.
- Install the adapter on the pump.NOTE: Refer to Fastener Notice in Cautions and Notices.
- Install the 3 bolts and spacers.
Tighten: Tighten the bolts to 20 N.m (15 lb ft).
- Install the gear and nut.
Tighten: Tighten nut to 70 N.m (52 lb ft).