LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2011 >> Yukon Base, 5.3 3 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 19 (Engine Mechanical - Hybrid (LZ1) - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Camshaft Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
NOTE:

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

  1. Remove the radiator support. Refer to Radiator Support Replacement .
  2. Remove the valve lifters. Refer to Valve Lifter Replacement .
  3. Remove the engine front cover. Refer to Engine Front Cover Replacement .
    4. Fig 1: CMP Actuator Sprocket And Crankshaft Sprocket Alignment Marks
    GM1670623Courtesy of GENERAL MOTORS CORP.
  4. Rotate the crankshaft sprocket until the camshaft position (CMP) actuator alignment mark (1) and the crankshaft sprocket alignment mark (2) are aligned.
    5. Fig 2: Flywheel Holding Tool
    GM1658136Courtesy of GENERAL MOTORS CORP.
    CAUTION:

    Refer to Fastener Caution .

    NOTE:

    Ensure that the teeth of the J 42386-A mesh with the teeth of the engine flywheel.

  5. Install the J 42386-A (1) and bolts. Use one M10-1.5 x 120 mm and one M10-1.5 x 45 mm bolt for proper tool operation.

    Tighten 

    Tighten the J 42386-A bolts to 50 N.m (37 lb ft).

    6. Fig 3: CMP Actuator Solenoid Valve
    GM1670622Courtesy of GENERAL MOTORS CORP.
  6. Remove and discard the CMP actuator solenoid valve (234).
    7. Fig 4: CMP Actuator And Timing Chain
    GM1658255Courtesy of GENERAL MOTORS CORP.
    CAUTION:

    Do not turn the crankshaft assembly after the timing chain has been removed in order to prevent damage to the piston assemblies or the valves.

  7. Remove the CMP actuator (235) and timing chain (208).
    8. Fig 5: Camshaft Retainer And Retainer Bolt
    GM1969013Courtesy of GENERAL MOTORS CORP.
  8. Remove the camshaft retainer bolts (204) and retainer (203).
    9. Fig 6: Camshaft
    GM1704626Courtesy of GENERAL MOTORS CORP.
    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.

  9. Install the camshaft sprocket bolt into the camshaft front bolt hole.
  10. Using the bolt as a handle, carefully rotate and remove the camshaft from the engine block.
  11. Remove the bolt from the camshaft.
scientia non olet · About LEMON Manuals