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Home >> Cadillac >> 2021 >> CT4 V, RWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 2.7L (L3B) - Repair Instructions - Ct4 (2 Of 6) >> Camshaft Position Actuator Replacement >> Installation Procedure

Installation Procedure

  1. GM5299894Courtesy of GENERAL MOTORS COMPANY

    Install the actuators (3, 4).

  2. Slide the barrel of the torque reaction tool (2) into the actuator (3, 4) and hold.
  3. NOTE:

    Ensure the torque reaction tool bolt (1) is tight enough that the barrel (2) will not slip.

  4. Tighten the bolt (1) holding in the actuator being installed.
  5. GM5257435Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Lubricate under the washer surface.

    Lubricate the camshaft position actuator valve solenoid bolts (1) with clean engine oil where indicated. Adhesives, Fluids, Lubricants, and Sealers

  6. GM5257330Courtesy of GENERAL MOTORS COMPANY

    Install and hand tighten the NEW camshaft position actuator valve solenoid bolts (1).

  7. GM5274568Courtesy of GENERAL MOTORS COMPANY

    EN-52436  Timing Chain Tensioner Retention Tool (1) @ Timing Chain (2) - Remove

  8. GM5257414Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Hold the camshaft position actuator firmly and squarely during camshaft position actuator valve solenoid bolt removal/installation. Failure to do so may result in damage to the inside of the camshaft position actuator.

    NOTE:

    Pressure must be applied towards the engine on the EN-52461  Camshaft Torque Reaction Tool at points (3) prior to and during any time the following two conditions are simultaneously met.

    • The camshaft position actuator valve solenoid bolt is loosened or removed.
    • The EN-52461  Camshaft Torque Reaction Tool bolts (2, 3) are loosened.

    Shift the slack in the timing chain to be taken up by the timing chain tensioner.

    1. Loosen the EN-52461  Camshaft Torque Reaction Tool bolt (2).
    2. Use a wrench to turn the EN-52461  Camshaft Torque Reaction Tool (1) counter-clockwise 6 N.m (53 lb in), then hold.
    3. Tighten the EN-52461  Camshaft Torque Reaction Tool bolt (2) to lock the intake actuator securely in place.
    4. Remove the wrench from EN-52461  Camshaft Torque Reaction Tool (1).
    5. Loosen the EN-52461  Camshaft Torque Reaction Tool bolt (3).
    6. Use a wrench to turn the EN-52461  Camshaft Torque Reaction Tool (4) counter-clockwise 6 N.m (53 lb in), then hold.
    7. Tighten the EN-52461  Camshaft Torque Reaction Tool bolt (3) to lock the intake actuator securely in place.
    8. Remove the wrench from EN-52461  Camshaft Torque Reaction Tool (4).
  9. GM5257299Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

    Tighten the NEW camshaft position actuator valve solenoid bolts (1). Fastener Specifications

  10. GM5257293Courtesy of GENERAL MOTORS COMPANY

    Loosen the EN-52461  Camshaft Torque Reaction Tool bolts (2) to un-lock the actuators.

  11. Disengage the tangs of the EN-52461  Camshaft Torque Reaction Tool (1) from the intake and exhaust camshaft position actuator slots.
  12. GM5257213Courtesy of GENERAL MOTORS COMPANY

    Remove the 2 EN-52461  Camshaft Torque Reaction Tool bolt (3).

  13. EN-52461  Camshaft Torque Reaction Tool (1) @ EN-52461-200  Camshaft Torque Reaction Tool 2.7L Adapter (2) - Remove
  14. GM5256386Courtesy of GENERAL MOTORS COMPANY

    Remove the 2 EN-52461-200  Camshaft Torque Reaction Tool 2.7L Adapter bolt (3).

  15. EN-52461-200  Camshaft Torque Reaction Tool 2.7L Adapter (2) - Remove [2x]
  16. Rotate both handles (4) of the EN-52462-A  Camshaft Alignment Tool towards the front of the engine.
  17. GM5256287Courtesy of GENERAL MOTORS COMPANY

    Loosen and disengage the EN-52462-A  Camshaft Alignment Tool bolt (2) from camshaft carrier.

  18. EN-52462-A  Camshaft Alignment Tool (1) - Remove
  19. GM5255373Courtesy of GENERAL MOTORS COMPANY

    Clean and apply sealant to the 2 camshaft cover core hole plugs (1). Adhesives, Fluids, Lubricants, and Sealers

  20. Camshaft Cover Core Hole Plug (1) - Install and tighten [2x] - Fastener Specifications
  21. GM5022287Courtesy of GENERAL MOTORS COMPANY

    Engine Front Cover Locating Pin (1) - Install [2x]

  22. Timing Chain Upper Cover Seal (2) - Install NEW
  23. GM5512168Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Ensure that the sealing surface is clear of oil, grease and old sealant material.

    NOTE:

    Ensure proper use of room temperature vulcanizing (RTV) sealant. Use of Room Temperature Vulcanizing (RTV) and Anaerobic Sealant

    NOTE:

    The timing chain upper cover must be installed within 8 minutes of the RTV sealant application.

    Apply room temperature vulcanizing (RTV) sealant at the seam between the camshaft housing and the cylinder head where indicated. Adhesives, Fluids, Lubricants, and Sealers

  24. GM5022287Courtesy of GENERAL MOTORS COMPANY

    Timing Chain Upper Cover (3) - Install

  25. Timing Chain Upper Cover Bolt (4) - Install and hand tighten [9x]
  26. Timing Chain Upper Cover Bolt (5) - Install and hand tighten
  27. Timing Chain Upper Cover Bolt (4, 5) - Tighten in sequence [10x] - Fastener Specifications
  28. GM5020482Courtesy of GENERAL MOTORS COMPANY

    Camshaft Position Actuator Magnet Gasket (3) - Install NEW [2x]

  29. Camshaft Position Actuator Magnet (2) - Install [2x]
  30. Camshaft Position Actuator Magnet Bolt (1) - Install and tighten [4x] - Fastener Specifications
  31. GM5512093Courtesy of GENERAL MOTORS COMPANY

    Retainer (1) - Install

  32. GM5512092Courtesy of GENERAL MOTORS COMPANY

    Positive Crankcase Ventilation Tube (4) - Connect - Plastic Collar Quick Connect Fitting Service

  33. Engine Wiring Harness (3) - Reposition
  34. Retainer (2) - Install [5x]
  35. Electrical Connector (1) - Connect [2x]
  36. GM5456829Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Ensure the intake manifold cover insulator retainers fully engage the intake manifold cover studs.

    Intake Manifold Cover Insulator (1) - Install

  37. GM5456746Courtesy of GENERAL MOTORS COMPANY

    Intake Manifold Cover Bolt (1) - Install - Fastener Specifications

  38. GM5432174Courtesy of GENERAL MOTORS COMPANY

    Intake Manifold Cover (1) @ Upper Intake Manifold Bracket (2) - Install

  39. GM5432171Courtesy of GENERAL MOTORS COMPANY

    Push down on the front of the intake manifold cover (2).

  40. Intake Manifold Cover Bolt (1) - Install [2x] - Fastener Specifications
  41. Install the oil fill cap.
  42. Connect the battery negative cable. Battery Negative Cable Disconnection and Connection