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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 525 (Engine Mechanical - Hybrid (LZ1) - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Engine Front Cover Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Do not reuse the crankshaft oil seal or front cover gasket.
  • Do not apply any type of sealant to the front cover gasket, unless specified.
  • The special tool in this procedure is used to properly center the front crankshaft front oil seal.
    • All gasket surfaces should be free of oil or other foreign material during assembly.
    • The crankshaft front oil seal MUST be centered in relation to the crankshaft.
    • An improperly aligned front cover may cause premature front oil seal wear and/or engine oil leaks.
    Fig 1: View Of CMP Actuator Magnet, Bolts, Gasket & Oil Seal
    GM1658168Courtesy of GENERAL MOTORS COMPANY
  1. If replacing the front cover perform the following steps, otherwise proceed to step 10.
  2. Install a NEW CMP actuator magnet gasket (753) onto the magnet.
    3. CAUTION:

    Refer to Fastener Caution .

  3. Install the CMP actuator magnet (752) and bolts (751).

    Tighten 

    Tighten the bolts to 12 (106 lb in).

    4. Fig 2: View Of CMP Sensor & O-Ring
    GM1658166Courtesy of GENERAL MOTORS COMPANY
  4. Inspect the CMP sensor O-ring seal for cuts or damage. If the seal is not cut or damaged, it may be reused.
  5. Lubricate the O-ring seal (704) with clean engine oil.
  6. Install the CMP sensor (703).
    7. Fig 3: Identifying Engine Front Cover & Bolts
    GM1968314Courtesy of GENERAL MOTORS COMPANY
  7. Position the CMP sensor wire harness (2) to the front cover.
  8. Connect the CMP sensor wire harness to the CMP sensor.
  9. Install the CMP sensor wire harness bolts (1).

    Tighten 

    Tighten the bolts to 12 (106 lb in).

    10. Fig 4: Applying Sealant To Oil Pan & Engine Block Junction
    GM2126894Courtesy of GENERAL MOTORS COMPANY
  10. Apply a 5 mm (0.20 in) bead of sealant, 20 mm (0.80 in) long to the oil pan to engine block junction. Refer to Adhesives, Fluids, Lubricants, and Sealers .
    11. Fig 5: View Of Front Cover, Bolts & Gasket
    GM1658162Courtesy of GENERAL MOTORS COMPANY
  11. Position the NEW engine front cover gasket (503) and front cover (502) to the engine.
  12. Install the front cover bolts (501) until snug. Do not overtighten.
    13. Fig 6: View Of Oil Pan-To-Front Cover Bolts
    GM832976Courtesy of GENERAL MOTORS COMPANY
  13. Install the oil pan-to-front cover bolts (1) finger tight. Do not over tighten.
    14. Fig 7: View Of Special Tool EN-48853, Oil Pan & Front Cover
    GM2137560Courtesy of GENERAL MOTORS COMPANY
  14. Install EN-48853  front cover alignment tool to the front cover.
  15. Install the crankshaft balancer bolt until snug. Do not overtighten.

    Tighten 

    1. Tighten the oil pan to front cover bolts to 25 (18 lb ft).
    2. Tighten the engine front cover bolts to 25 (18 lb ft).
  16. Remove the tools.
    17. Fig 8: Identifying CMP Sensor & Connector
    GM1968149Courtesy of GENERAL MOTORS COMPANY
  17. Position the CMP sensor.
  18. Connect the engine harness electrical connector (2) to the CMP sensor wire harness electrical connector.
  19. Connect the camshaft position sensor wire harness electrical connector (1) to the CMP actuator magnet.
  20. Install a NEW crankshaft front oil seal. Refer to Crankshaft Front Oil Seal Replacement (With LY6) .
  21. Install the water pump. Refer to Water Pump Replacement .
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