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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 136 (Engine Mechanical - 3.6L (LF4) - Repair Instructions (2 Of 4)) >> Repair Instructions >> Engine Front Cover Removal and Installation >> Cleaning and Inspection Procedure - Required

Cleaning and Inspection Procedure - Required

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NOTE:

The following cleaning and inspection and/or overhaul steps are ONLY to be performed as determined necessary based on the condition of the part being removed with the intention of reinstallation. The labor time to perform any of these steps is not included in the base labor time and if required would need to be documented and submitted as Other Labor Hours for warranty claim reimbursement. A description of the repairs performed must be documented in the technician correction comments.

Engine Front Cover

  1. Clean the engine front cover with solvent.
  2. Dry the engine front cover with compressed air.
  3. GM5876892
    NOTE:

    Any damage to the engine front cover will require replacement of the engine front cover.

    Inspect the engine front cover for the following conditions:

    1. Gouges or damage to the engine front cover sealing surfaces to the engine block (8), oil pan (6), and camshaft covers (9)
    2. Damage and/or corrosion to the engine coolant passages (7).
    3. Damage to the crankshaft front oil seal bore (5).
    4. Damage to the engine front cover bolt holes (4).
    5. Damage to the camshaft position actuator valve oil seal bores (3).
      6. NOTE:

      Replace only the components necessary to complete the repair.

    6. Inspect water pump gasket (2) for leaks.

      If leakage is found, replace the water pump gasket (2).

      7. NOTE:

      Replace only the components necessary to complete the repair.

    7. Inspect the camshaft position sensors (1) for leaks or damage.
    8. If leakage or damage is found, replace the camshaft position sensors (1).

Camshaft Cover

    NOTE:

    Do not submerge the camshaft cover in solvent.

  1. Clean the camshaft cover with solvent.
  2. Dry the camshaft cover with compressed air.
  3. GM5869158

    Inspect the camshaft cover (4) for the following conditions:

    1. Damage to the camshaft cover (4).

      If damage is found, replace the camshaft cover (4).

    2. Damage to the positive crankcase ventilation fitting (3).

      If damage is found, replace the positive crankcase ventilation fitting (3) using a suitable tool.

      3. NOTE:

      Replace only the components necessary to complete the repair.

    3. Damage to the spark plug shield seal (2).

      If damage is found, remove the affected spark plug shield seal (2) using a suitable tool, and install the NEW seal using DT-5590 Bearing and Seal Driver and J-25254 - A Oil Seal Installer.

      4. NOTE:

      Replace only the components necessary to complete the repair.

    4. Damage to the camshaft cover bolt insulators (1).

      If damage is found, replace the affected camshaft cover bolt insulators (1) using a suitable tool.

Camshaft Cover

    NOTE:

    Do not submerge the camshaft cover in solvent.

  1. Clean the camshaft cover with solvent.
  2. Dry the camshaft cover with compressed air.
  3. GM5873171

    Inspect the camshaft cover (5) for the following conditions:

    1. Damage to the camshaft cover (5).

      If damage is found, replace the camshaft cover (5).

    2. Damage to the positive crankcase ventilation fitting (4).

      If damage is found, replace the positive crankcase ventilation fitting (4) using a suitable tool.

    3. Damage to the vacuum pump seal (3).
    4. If damage is found replace the vacuum pump seal (3) using a suitable tool.
      5. NOTE:

      Replace only the components necessary to complete the repair.

    5. Damage to the spark plug shield seal (2).

      If damage is found, remove the affected spark plug shield seal (2) using a suitable tool, and install the NEW seal using DT-5590  Bearing and Seal Driver and J-25254 - A  Oil Seal Installer.

      6. NOTE:

      Replace only the components necessary to complete the repair.

    6. Damage to the camshaft cover bolt insulators (1).

      If damage is found, replace the affected camshaft cover bolt insulators (1) using a suitable tool.

Crankshaft Balancer

  1. Clean the crankshaft balancer in solvent.
  2. Clean the belt grooves of all dirt or debris with a wire brush.
  3. Dry the crankshaft balancer with compressed air.
  4. GM5873748

    Inspect the crankshaft balancer for the following conditions:

    • Worn, grooved, or damaged hub seal surface.
    • A crankshaft balancer hub seal surface (2) with excessive scoring, grooves, rust or other damage must be replaced.
    • Minor imperfections on the hub seal surface (2) may be removed with polishing compound or fine grade emery cloth.
      • NOTE:

      In order for the belt to track properly, the belt grooves should be free of all dirt or debris.

    • Dirty or damaged belt grooves (1).
    • The balancer belt grooves (1) should be free of any nicks, gouges, or other damage that may not allow the belt to track properly.
    • Minor imperfections may be removed with a fine file.
    • Worn, chunking, or deteriorated rubber between the hub and pulley.
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