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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1023 (Engine Mechanical - 6.6L (Lb7) (Repair Instructions 1 Of 4)) >> Repair Instructions (On-Vehicle & Off Vehicle - Part 1) >> On-Vehicle Repair Instructions >> Camshaft Replacement >> Installation Procedure

Installation Procedure

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.
    Fig 1: View Of Camshaft, Camshaft Gear & Camshaft Thrust Plate
    GM660540Courtesy of GENERAL MOTORS CORP.
  1. Install the camshaft thrust plate to the camshaft.
  2. Install the camshaft driven gear.
  3. Install a NEW camshaft driven gear bolt.

    Leave the bolt finger tight.

  4. Install the camshaft into the cylinder block, align the camshaft gear to the crankshaft gear as shown.
    5. Fig 2: View Of Camshaft Gear Aligned With Crankshaft Gear
    GM663813Courtesy of GENERAL MOTORS CORP.
  5. Apply threadlock GM P/N 12345493 (Canadian P/N 10953488), or equivalent to the threads of the camshaft thrust plate bolts.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  6. Install the camshaft thrust plate bolts.

    Tighten:  Tighten the bolts to 22 N.m (16 lb ft).

    7. Fig 3: View Of Camshaft Thrust Plate Bolts
    GM738902Courtesy of GENERAL MOTORS CORP.
  7. Install the camshaft reluctor to the camshaft gear.
  8. Install the camshaft reluctor bolts.

    Tighten:  Tighten the bolts in a cross-bolt pattern to 9 N.m (80 lb in).

    9. Fig 4: View Of Camshaft Reluctor & Bolts
    GM739316Courtesy of GENERAL MOTORS CORP.
  9. Reinstall J 44643  in the starter opening, if removed.
    10. Fig 5: Locking Flywheel Using J 44643
    GM660308Courtesy of GENERAL MOTORS CORP.
  10. Install a NEW camshaft gear bolt.

    Tighten:  Tighten the bolt to 234 N.m (173 lb ft).

  11. Using J 26900-12  (1) and J 26900-13  (2) measure the camshaft end play.
    • The production value is 0.050-0.114 mm (0.002-0.0045 in) and service limit is 0.20 mm (0.008 in).
    • Replace the camshaft gear or the camshaft thrust plate if measured value exceeds the service limit.
    12. Fig 6: Measuring Camshaft End Play Using J 26900-12 & J 26900-13
    GM738903Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Do not damage the teeth on the crankshaft reluctor.
  12. Install the oil pump drive gear and reluctor to the crankshaft.
    13. Fig 7: View Of Oil Pump Drive Gear
    GM738904Courtesy of GENERAL MOTORS CORP.
  13. Install the oil pump driven gear.
  14. Install the oil pump driven gear nut.

    Tighten:  Tighten the nut to 100 N.m (74 lb ft).

    15. Fig 8: View Of Oil Pump Driven Gear & Nut
    GM738905Courtesy of GENERAL MOTORS CORP.
  15. Install the engine front cover. Refer to Engine Front Cover Replacement .
  16. Install the starter. Refer to Starter Motor Replacement (6.6L (LB7) Engine) in Engine Electrical.
  17. Install the A/C condenser. Refer to Condenser Replacement in Heating, Ventilation, and Air Conditioning.
  18. Install the charged air cooler. Refer to Charged Air Cooler Replacement .
  19. Install the valve lifters. Refer to Valve Lifter Replacement .
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