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 >> Timing Chain, Crankshaft Sprocket, Camshaft Position Actuator, and Solenoid Valve Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Remove the oil pump. Refer to Oil Pump, Screen, and Crankshaft Oil Deflector Replacement .
    2. Fig 1: CMP Actuator Sprocket And Crankshaft Sprocket Alignment Marks
    GM1670623Courtesy of GENERAL MOTORS CORP.
  2. Rotate the crankshaft sprocket until the camshaft position (CMP) actuator alignment mark (1) and the crankshaft sprocket alignment mark (2) are aligned.
    3. 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.

  3. 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).

    4. Fig 3: CMP Actuator Solenoid Valve
    GM1670622Courtesy of GENERAL MOTORS CORP.
  4. Remove and discard the CMP actuator solenoid valve (234).
    5. Fig 4: Proper CMP Actuator Removal
    GM1714936Courtesy of GENERAL MOTORS CORP.
    WARNING:

    Do not push or pull on the reluctor wheel of the camshaft position (CMP) actuator during removal or installation. The reluctor wheel is retained to the front of the CMP actuator by 3 roll pins. Pushing or pulling on the wheel may dislodge the wheel from the front of the actuator. The actuator return spring is under tension and may rotate the dislodged reluctor wheel, causing personal injury.

  5. Loosen and separate the CMP actuator and timing chain from the camshaft. Position your fingers behind the actuator sprocket and pull the actuator away from the front of the camshaft. Never pull on the reluctor wheel when attempting to remove the actuator.
    6. Fig 5: 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.

  6. Remove the CMP actuator (235) and timing chain (208).
    7. Fig 6: Tie Strap Through Center Of Actuator
    GM1714946Courtesy of GENERAL MOTORS CORP.
  7. Insert and secure a tie strap (1) through the center of the actuator and over the reluctor wheel.
    8. Fig 7: Timing Chain Tensioner
    GM1658178Courtesy of GENERAL MOTORS CORP.
  8. Remove the timing chain tension bolts (231) and tensioner (232).
    9. Fig 8: Crankshaft Sprocket And Special Tools
    GM1658180Courtesy of GENERAL MOTORS CORP.
  9. Using the J 41816-2 (1), the J 41558 (2), bolts (3) and the J 8433 (4) in order to remove the crankshaft sprocket.
    10. Fig 9: Crankshaft Sprocket
    GM1658182Courtesy of GENERAL MOTORS CORP.
  10. Remove the crankshaft sprocket (207).
    11. Fig 10: Crankshaft Key And Keyway
    GM156149Courtesy of GENERAL MOTORS CORP.
  11. Remove the crankshaft sprocket key, if required.
scientia non olet · About LEMON Manuals