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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1075 (Engine Mechanical - 6.6L (4 Of 5)) >> Off-Vehicle Repair Instructions (3 Of 4) >> Camshaft Installation >> Installation

Camshaft Installation: Installation

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 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. Fig 2: View Of Camshaft Gear Aligned With Crankshaft Gear
    GM663813Courtesy of GENERAL MOTORS CORP.
  4. Install the camshaft and gear assembly into the cylinder block, aligning the camshaft gear to the crankshaft gear as shown.
    5. NOTE: Refer to Fastener Notice .
  5. Install the camshaft thrust plate bolts.

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

    6. Fig 3: Using Exciter Ring Bolt To Secure Spring Tension
    GM1650679Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Use a suitable tool to relieve the spring tension while removing the locking bolt.
  6. Remove the exciter ring bolt that was installed to hold the spring tension of the two piece cam gear.
    7. Fig 4: View Of Camshaft Exciter Ring, Bolts & Thrust Plate Bolts
    GM663091Courtesy of GENERAL MOTORS CORP.
  7. Install the camshaft position sensor exciter ring to the camshaft gear.
  8. Install the camshaft position sensor exciter ring bolts.

    Tighten:  Tighten the camshaft position sensor exciter ring bolts to 9 N.m (80 lb in).

    9. Fig 5: Blocking Crankshaft From Turning Using Wooden Handle
    GM660539Courtesy of GENERAL MOTORS CORP.
  9. Block the crankshaft from turning using a wooden handle.
  10. Install the new camshaft gear bolt.

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

    11. Fig 6: Measuring Camshaft End Play Using J 7872
    GM663816Courtesy of GENERAL MOTORS CORP.
  11. Measure the camshaft end play with J 7872  .
    • The production value is 0.050-0.114 mm (0.0020-0.0045 in) and service limit is 0.2 mm (0.0079 in).
    • Replace the camshaft gear or the camshaft thrust plate if measured value exceeds the service limit.
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