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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 Timing Chain Replacement >> Installation Procedure

Installation Procedure

  1. GM5517326Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Install the timing chain around the crankshaft sprocket and hang it on the EN-52461  Camshaft Torque Reaction Tool or tie it up with wire until the camshaft position actuators are installed.

    Timing Chain (1) - Install

  2. Compress the timing chain tensioner and install EN-52593  Locking Pin Tool.
  3. GM5512284Courtesy of GENERAL MOTORS COMPANY

    Timing Chain Tensioner Gasket (3) - Install NEW

  4. Timing Chain Tensioner (2) - Install
    5. CAUTION:

    Refer to Fastener Caution .

  5. Timing Chain Tensioner Bolt (1) - Install and tighten [2x] - Fastener Specifications
  6. GM5299894Courtesy of GENERAL MOTORS COMPANY

    Install the actuators (3, 4).

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

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

  8. Tighten the bolt (1) holding in the actuator being installed.
  9. 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

  10. GM5257330Courtesy of GENERAL MOTORS COMPANY

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

  11. Remove the EN-52593  Locking Pin Tool.
  12. 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 toward the engine on the EN-52461  Camshaft Torque Reaction Tool at points (1, 4) during any time the following two conditions are simultaneously met.

    • The camshaft sprocket 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 the timing chain tensioner side.

    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).
  13. GM5257299Courtesy of GENERAL MOTORS COMPANY

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

  14. GM5257293Courtesy of GENERAL MOTORS COMPANY

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

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

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

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

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

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

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

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

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

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

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

  26. Timing Chain Upper Cover Seal (2) - Install NEW
  27. 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.

  28. GM5022287Courtesy of GENERAL MOTORS COMPANY

    Timing Chain Upper Cover (3) - Install

  29. Timing Chain Upper Cover Bolt (4) - Install and hand tighten [9x]
  30. Timing Chain Upper Cover Bolt (5) - Install and hand tighten
  31. Timing Chain Upper Cover Bolt (4, 5) - Tighten in sequence [10x] - Fastener Specifications
  32. GM5020482Courtesy of GENERAL MOTORS COMPANY

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

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

    Retainer (1) - Install

  36. GM5512092Courtesy of GENERAL MOTORS COMPANY

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

  37. Engine Wiring Harness (3) - Reposition
  38. Retainer (2) - Install [5x]
  39. Electrical Connector (1) - Connect [2x]
  40. GM5021096Courtesy of GENERAL MOTORS COMPANY

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

  41. EN-52483  Cover Installation Guide Pins - Install
  42. GM5045208Courtesy 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 engine front cover must be installed within 8 minutes of applying the RTV sealant application.

    Apply a bead of room temperature vulcanizing sealant (1) as shown. Adhesives, Fluids, Lubricants, and Sealers

  43. GM5021096Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Leave the seal protector that ships installed onto the NEW engine front cover on.

    Install the engine front cover (2) until the seal protector is flush with the end of the crankshaft.

  44. Press the center of the engine front cover in, allowing the crankshaft to push out the seal protector.
  45. DISCARD the seal protector.
  46. Once the engine front cover is completely seated, inspect the seal around the crankshaft to ensure it has not folded over itself.
  47. EN-52483  Cover Installation Guide Pins - Remove
  48. Engine Front Cover Bolt (1) - Install and hand tighten [10x]
  49. Fig 1: Identifying Engine Front Cover Bolts With Tightening Sequence
    GM5021113Courtesy of GENERAL MOTORS COMPANY

    Engine Front Cover Bolt (1) - Tighten in sequence [14x] - Fastener Specifications

  50. GM5003904Courtesy of GENERAL MOTORS COMPANY

    Belt Idler Pulley (1) - Install - Fastener Specifications

  51. Crankshaft Balancer Bolt - Remove and DISCARD
  52. GM5164169Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The timing pin (3) is installed into the flexplate for engine timing procedures, it can be damaged if torque is applied to the flexplate with the timing pin engaged. The pin must be placed in the retracted position before torque is applied to the flexplate.

    Set the timing pin feature in the retracted position from the engaged position by pulling back and twisting the handle (1) 90 degrees.

  53. Engage the EN-52476  Flywheel Holding Tool (2) to the flex plate.
  54. GM5003927Courtesy of GENERAL MOTORS COMPANY

    Crankshaft Balancer (2) - Install

  55. Crankshaft Balancer Bolt - Install NEW and tighten - Fastener Specifications
  56. GM5164169Courtesy of GENERAL MOTORS COMPANY

    EN-52476  Flywheel Holding Tool (2) - Remove

  57. GM5417288Courtesy of GENERAL MOTORS COMPANY

    Auxiliary Generator Battery Jumper Cable (2) - Install

  58. Battery Positive Cable Nut (1) @ Starter Solenoid - Install and tighten - Fastener Specifications
  59. Electrical Connector (4) - Connect
  60. Starter (3) - Install
  61. GM5417249Courtesy of GENERAL MOTORS COMPANY

    Starter Bolt (2) - Install and tighten [2x] - Fastener Specifications

  62. Starter Stud (1) - Install and tighten - Fastener Specifications
  63. GM5417233Courtesy of GENERAL MOTORS COMPANY

    Auxiliary Generator Battery Jumper Cable - Install

  64. Install and tighten the auxiliary generator battery jumper cable terminal nut (1). Fastener Specifications
  65. Retainer (3) - Engage
  66. GM5396466Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Cooler Seal (2) - Install NEW [2x]

  67. Engine Oil Cooler (1) - Install
  68. GM5396459Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Cooler Bolt (1) - Install and tighten [4x] - Fastener Specifications

  69. GM5396452Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Cooler Coolant Inlet Hose (3) @ Engine Oil Cooler - Install

  70. Engine Oil Cooler Coolant Outlet Hose (2) @ Engine Oil Cooler - Install
  71. Hose Clamp (1) - Engage [2x] - Hose Clamp Replacement Guidelines - Spring Type
  72. Lower the vehicle.
  73. GM5138580Courtesy of GENERAL MOTORS COMPANY

    Drive Belt Tensioner (4) - Install

  74. Drive Belt Tensioner Bolt (3) - Install and tighten [2x] - Fastener Specifications
  75. Belt Idler Pulley (2) - Install
  76. Belt Idler Pulley Bolt (1) - Install and tighten - Fastener Specifications
  77. GM5003904Courtesy of GENERAL MOTORS COMPANY

    Belt Idler Pulley (1) - Install - Fastener Specifications

  78. Fig 2: Identifying Accessory Drive Primary Drive Belt Routing (L3B)
    GM5156329Courtesy of GENERAL MOTORS COMPANY

    Position the accessory drive primary belt onto all of the pulleys except one idler pulley.

  79. Use a suitable tool to rotate the drive belt tensioner (1) counterclockwise and hold.
  80. Accessory Drive Primary Belt (2) - Install
  81. Release the drive belt tensioner, inspect the accessory drive primary belt (2) to ensure it is centered on all pulleys.
  82. 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

  83. GM5456746Courtesy of GENERAL MOTORS COMPANY

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

  84. GM5432174Courtesy of GENERAL MOTORS COMPANY

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

  85. GM5432171Courtesy of GENERAL MOTORS COMPANY

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

  86. Intake Manifold Cover Bolt (1) - Install and tighten [2x] - Fastener Specifications
  87. Install the oil fill cap.
  88. Fill the engine oil to the proper level with NEW engine oil. Engine Oil and Oil Filter Replacement
  89. Fill the cooling system. Cooling System Draining and Filling (L3B Static Fill) , or Cooling System Draining and Filling (L3B GE 47716)
  90. Connect the negative battery cable. Battery Negative Cable Disconnection and Connection
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