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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 487 (Engine Mechanical - 5.3L, 6.0L, 6.2L - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Camshaft Replacement >> Installation Procedure

Installation Procedure

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    Fig 1: View Of Camshaft
    GM1704626Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    If camshaft replacement is required, the valve lifters must also be replaced.

  1. Lubricate the camshaft journals and the bearings with clean engine oil.
    2. CAUTION:

    All camshaft journals are the same diameter, so care must be used in removing or installing the camshaft to avoid damage to the camshaft bearings.

  2. Using the bolt as a handle, carefully install the camshaft into the engine block.
  3. Remove the bolt from the front of the camshaft.
    4. Fig 2: View Of Camshaft Retainer & Retainer Bolt
    GM1969013Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Install the retainer with the sealing gasket facing the engine block.

    The gasket surface on the engine block should be clean and free of dirt and/or debris.

  4. Install the camshaft retainer (203) and bolts (204).
    5. CAUTION:

    Refer to Fastener Caution .

  5. Tighten the camshaft retainer bolts.

    Tighten 

    • Tighten the first design hex head bolts (3) to 25 N.m (18 lb ft).
    • Tighten the second design TORX® head bolts (4) to 15 N.m (11 lb ft).
  6. Install the Timing Chain, Camshaft Position Actuator, and Solenoid Valve. Refer to Timing Chain, Crankshaft Sprocket, Camshaft Position Actuator, and Solenoid Valve Replacement (L99) 
  7. Install the valve lifters. Refer to Valve Lifter Replacement (Without AFM) , Valve Lifter Replacement (With AFM) .
  8. Install the a/c condenser. Refer to Air Conditioning Condenser Replacement (Gas) .
  9. Install the radiator. Refer to Radiator Replacement (Non HP2) , Radiator Replacement (HP2) .
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