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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 62 (Engine Mechanical) >> Repair Instructions >> On-Vehicle Repair Instructions >> Valve Rocker Arm Cover Replacement - Right Side >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
  • All gasket surfaces should be free of oil or other foreign material during assembly.
  • DO NOT reuse the valve rocker arm cover gasket.
  • The valve rocker arm cover bolt grommets may be reused.
  • If the oil fill tube has been removed from the rocker arm cover, install a NEW fill tube during assembly.
    Fig 1: View Of Oil Fill Tube
    GM647798Courtesy of GENERAL MOTORS CORP.
  1. Lubricate the O-ring seal of the NEW oil fill tube with clean engine oil.
  2. Insert the NEW oil fill tube into the rocker arm cover.

    Rotate the tube clockwise until locked in the proper position.

  3. Install the oil fill cap into the tube.

    Rotate the cap clockwise until locked in the proper position.

    4. Fig 2: Rocker Arm Cover Gasket
    GM490696Courtesy of GENERAL MOTORS CORP.
  4. Install a NEW rocker cover gasket (1) into the valve rocker cover lip.
    5. Fig 3: View Of Valve Rocker Arm Cover & Bolts (Right)
    GM260084Courtesy of GENERAL MOTORS CORP.
  5. Install the valve rocker arm cover onto the cylinder head.
  6. Install new rocker arm cover grommets, if necessary.
    NOTE: Refer to Fastener Notice .
  7. Install the rocker arm cover bolts and grommets.

    Tighten:  Tighten the bolts to 12 N.m (106 lb in).

  8. Install the PCV fresh air hose.
    9. Fig 4: Ignition Coils And Bracket
    GM647792Courtesy of GENERAL MOTORS CORP.
  9. Apply threadlock to the threads of the bracket bolts. Refer to Sealers, Adhesives, and Lubricants  for the correct part number.
  10. Install the ignition coils and bracket to the rocker arm cover.
  11. Install the ignition coil bracket studs to the rocker cover.

    Tighten:  Tighten the studs to 12 N.m (106 lb in).

    12. Fig 5: View Of Heater Hose Bracket Nut
    GM688018Courtesy of GENERAL MOTORS CORP.
  12. Install the heater hose bracket and nut.

    Tighten:  Tighten the nut to 9 N.m (80 lb in).

  13. Position the surge tank/heater hoses to the heater hose bracket.
    14. Fig 6: Identifying Right Side Main Electrical Connectors
    GM1235686Courtesy of GENERAL MOTORS CORP.
  14. Install the spark plug wires to the ignition coils.
  15. Re-position the engine harness.
  16. Install the harness clips (1).
  17. Connect the main electrical connector (4) feeding the ignition coils.
  18. Install the CPA lock (5).
  19. Install the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement (6.0L (LQ4)) .
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