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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 976 (Engine Controls - 6.6L (Lb7) (Introduction)) >> Repair Instructions >> Fuel Injection Pump Replacement >> Preparing The Fuel Pump

Preparing The Fuel 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.
  1. Hold the fuel pump by the drive gear in a vice with copper jaw liners.
  2. Loosen the gear nut until the nut is even with the end of the gear shaft.
  3. Remove the gear from the tapered shaft of the pump.
  4. Separate the pump and adapter by removing the three bolts and spacers.
  5. Inspect the O-ring for damage on pump adapter and replace, if necessary. Lubricate the O-ring with clean engine oil.
  6. Clean all mating surfaces.
  7. Install the adapter on the pump.
    8. NOTE: Refer to Fastener Notice in Cautions and Notices.
  8. Using the three bolts and spacers, reassemble the pump.

    Tighten:  Tighten the bolts to 20 N.m (15 lb ft).

  9. Replace the gear and nut.

    Tighten:  Tighten nut to 70 N.m (52 lb ft).

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