LEMON Manuals: Even more car manuals for everyone
Home >> Cadillac >> 2021 >> CT4 V, RWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 2.7L (L3B) - Repair Instructions - Ct4 (5 Of 6) >> Piston and Connecting Rod Removal and Installation (AWD) >> Removal Procedure

Removal Procedure

  1. EngineRemove - Engine Replacement (AWD)
  2. GM5002064Courtesy of GENERAL MOTORS COMPANY

    Camshaft Carrier Bolt (2) - Remove

  3. Camshaft Cover Core Hole Plug (1) - Remove [2x]
  4. 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.

  5. Install the EN-52476  Flywheel Lock and Alignment Tool (2) through the starter mounting hole.
  6. Install the slide (4) of the EN-52476  Flywheel Lock and Alignment Tool.
  7. GM5256287Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The EN-52462-A  Camshaft Alignment Tool locking pins fit tightly into the camshafts. Rotate the engine in both directions in small increments using the crankshaft balancer bolt until the locking pins of the EN-52462-A  Camshaft Alignment Tool (1) drop into the slots in the camshafts. Momentarily retract the timing pin of the EN-52476  Flywheel Lock and Alignment Tool as necessary to seat the EN-52462-A  Camshaft Alignment Tool locking pins. Ensure the EN-52476  Flywheel Lock and Alignment Tool timing pin is re-engaged into the automatic transmission flex plate.

    EN-52462-A  Camshaft Alignment Tool (1) - Install

  8. Insert the EN-52462-A  Camshaft Alignment Tool bolt (2) into the camshaft carrier and tighten to secure the tool to the camshaft carrier.
  9. GM5003927Courtesy of GENERAL MOTORS COMPANY

    Crankshaft Balancer Bolt (1) - Remove and DISCARD

  10. Crankshaft Balancer (2) - Remove
  11. GM5004060Courtesy of GENERAL MOTORS COMPANY

    Engine Front Cover Bolt (1) - Remove [10x]

  12. Engine Front Cover (2) - Remove and DISCARD
  13. The engine block sealing surface must be cleaned with low VOC brake clean, allow it to sit on the surface for several minutes to loosen the RTV. Use a plastic putty knife or plastic scraper to remove the old RTV. Once the RTV is removed, spray a second application of low VOC brake cleaner to the sealing surface on the engine block, wipe off with a clean lint free cloth. Wipe the new cover with low VOC brake clean on the sealing surface / bead path, then wipe it off with a clean lint free cloth.
  14. Clean out the engine front cover locating pin bores with low VOC brake clean and then dry them out with shop air.
  15. 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.

    Remove the slide (4) of the EN-52476  Flywheel Lock and Alignment Tool (2) and install the timing pin (3) by releasing the handle (1).

  16. GM5646821Courtesy of GENERAL MOTORS COMPANY

    Camshaft Position Actuator Solenoid Valve Bolt (1) - Remove [2x]

  17. Camshaft Position Actuator Magnet (2) - Remove
  18. Camshaft Position Actuator Magnet Gasket (3) - Remove and DISCARD
  19. GM5646819Courtesy of GENERAL MOTORS COMPANY

    Camshaft Position Actuator Solenoid Valve Bolt (1) - Remove [2x]

  20. Camshaft Position Actuator Magnet (2) - Remove
  21. Camshaft Position Actuator Magnet Gasket (3) - Remove and DISCARD
  22. GM5004054Courtesy of GENERAL MOTORS COMPANY

    Timing Chain Upper Cover Bolt (1) - Remove [9x]

  23. Timing Chain Upper Cover Bolt (2) - Remove
    24. NOTE:

    Use pry points to remove the timing chain upper cover.

  24. Timing Chain Upper Cover (3) - Remove
  25. Timing Belt Front Upper Cover Seal (4) - Remove and DISCARD
  26. GM5256386Courtesy of GENERAL MOTORS COMPANY

    Rotate both handles (4) of the EN-52462-A  Camshaft Alignment Tool towards the rear of the engine.

    27. NOTE:

    Ensure the camshaft carrier and cylinder head face are clean and free from RTV prior to installing the EN-52461-200  Camshaft Torque Reaction Tool 2.7L Adapter.

  27. EN-52461-200  Camshaft Torque Reaction Tool 2.7L Adapter (2) - Install [2x]
  28. Install and tighten the two EN-52461-200  Camshaft Torque Reaction Tool 2.7L Adapter bolts (3) enough to secure the EN-52461-200  Camshaft Torque Reaction Tool 2.7L Adapter (2) to the cylinder head.
  29. GM5257213Courtesy of GENERAL MOTORS COMPANY

    EN-52461  Camshaft Torque Reaction Tool (1) @ EN-52461-200  Camshaft Torque Reaction Tool 2.7L Adapter (2) - Install

  30. Install and tighten the 2 EN-52461  Camshaft Torque Reaction Tool bolts (3).
  31. GM5257293Courtesy of GENERAL MOTORS COMPANY

    Engage the tangs of the EN-52461  Camshaft Torque Reaction Tool (1) to the intake and the exhaust camshaft position actuator slots.

  32. Tighten the EN-52461  Camshaft Torque Reaction Tool bolts (2) to lock the actuators in place.
  33. GM5257299Courtesy of GENERAL MOTORS COMPANY

    Loosen the camshaft position actuator valve solenoid bolts (1).

    34. 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 (1) is loosened or removed.
    • The EN-52461  Camshaft Torque Reaction Tool bolts (2, 4) are loosened.
  34. Loosen the EN-52461  Camshaft Torque Reaction Tool bolt (2) to un-lock the intake actuator.
  35. Loosen the EN-52461  Camshaft Torque Reaction Tool bolt (4) to un-lock the exhaust actuator.
  36. GM5257323Courtesy of GENERAL MOTORS COMPANY

    Remove timing chain tension from the camshaft position actuators and tighten the lower portion of the timing chain around the crankshaft sprocket.

    1. Use a wrench to turn the EN-52461  Camshaft Torque Reaction Tool (1) counter-clockwise 6 N.m 53 lb in, then hold.
      2. NOTE:

      Ensure the EN-52461  Camshaft Torque Reaction Tool bolt (2) is tightened enough that EN-52461  Camshaft Torque Reaction Tool (1) is firmly clamped and will not slip.

    3. Tighten the EN-52461  Camshaft Torque Reaction Tool bolt (1) to lock the intake actuator securely in place.
    4. Remove the wrench from EN-52461  Camshaft Torque Reaction Tool (1).
    5. Use a wrench to turn the EN-52461  Camshaft Torque Reaction Tool (4) clockwise 6 N.m 53 lb in, then hold.
      6. NOTE:

      Ensure the EN-52461  Camshaft Torque Reaction Tool bolt (3) is tightened enough that EN-52461  Camshaft Torque Reaction Tool (4) is firmly clamped and will not slip.

    7. Tighten the EN-52461  Camshaft Torque Reaction Tool bolt (2) to lock the exhaust actuator securely in place.
    8. Remove the wrench from EN-52461  Camshaft Torque Reaction Tool (4).
    9. GM5257323Courtesy of GENERAL MOTORS COMPANY

      Relieve timing chain tension from the camshaft position actuators.

      10. NOTE:

      Pressure must be applied towards the engine on the EN-52461  Camshaft Torque Reaction Tool at points (1, 4) 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.
    10. Loosen the EN-52461  Camshaft Torque Reaction Tool bolt (2) to release the intake actuator.
    11. Loosen the EN-52461  Camshaft Torque Reaction Tool bolt (3) to release the exhaust actuator.
    12. GM5257330Courtesy of GENERAL MOTORS COMPANY
      NOTE:

      Only remove the camshaft position actuator valve bolts that are defective, or as necessary to remove their corresponding actuators.

      Remove the camshaft position actuator valve solenoid bolts (1) as necessary and DISCARD.

    13. GM5299877Courtesy of GENERAL MOTORS COMPANY
      NOTE:

      Hold the bottom of the actuator while disengaging the torque reaction tool to prevent the actuator from dropping.

      Slide the barrel (2) of the torque reaction tool away from the actuators.

    14. Remove the exhaust camshaft position actuator (3) and the intake camshaft position actuator (4) as necessary.
  37. GM5004068Courtesy of GENERAL MOTORS COMPANY

    Timing Chain Tensioner Bolt (1) - Remove [2x]

    38. NOTE:

    The timing chain tensioner plunger is spring loaded, hold the plunger in place as the tensioner is removed to prevent losing components of the timing chain tensioner.

  38. Timing Chain Tensioner (2) - Remove
  39. Timing Chain Tensioner Gasket (3) - Remove and DISCARD
  40. Timing Chain Guide Bolt (4) - Remove
  41. Timing Chain Guide (5) - Remove
  42. GM5004079Courtesy of GENERAL MOTORS COMPANY

    Crankshaft Sprocket (3) - Remove

  43. Timing Chain Guide Bolt (1) - Remove [2x]
  44. Timing Chain Guide (2) - Remove
  45. Timing Chain (4) - Remove
  46. GM5257213Courtesy of GENERAL MOTORS COMPANY

    Loosen the two bolts (3) of EN-52461-200  Camshaft Torque Reaction Tool 2.7L Adapter.

  47. Remove EN-52461  Camshaft Torque Reaction Tool (1).
  48. GM5256386Courtesy of GENERAL MOTORS COMPANY

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

  49. EN-52461-200  Camshaft Torque Reaction Tool 2.7L Adapter - Remove [2x]
  50. GM5004087Courtesy of GENERAL MOTORS COMPANY

    Camshaft Cover Stud (1) - Remove

  51. Camshaft Cover Stud (2) - Remove [17x]
  52. Camshaft Cover Bolt (3) - Remove [4x]
  53. Camshaft Carrier (4) - Remove
  54. Camshaft Cover Gasket (5) - Remove and DISCARD
  55. GM5022863Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    This vehicle is equipped with torque-to-yield or single use fasteners. Install a NEW torque-to-yield or single use fastener when installing this component. Failure to replace the torque-to-yield or single use fastener could cause damage to the vehicle or component.

    CAUTION:

    After removal, place the cylinder head on 2 wood blocks in order to prevent damage to the sealing surfaces.

    Cylinder Head Bolt (6) - Remove and DISCARD [2x]

  56. Cylinder Head Bolt (5) - Remove and DISCARD [3x]
  57. Cylinder Head Bolt (4) - Remove and DISCARD [3x]
  58. Cylinder Head Bolt (3) - Remove and DISCARD [10x]
  59. Cylinder Head (2) - Remove
  60. Cylinder Head Gasket (1) - Remove and DISCARD
  61. GM5389821Courtesy of GENERAL MOTORS COMPANY

    Lower Oil Pan Bolt (1) - Remove [17x]

    62. NOTE:

    Do not pry on the oil pan to lower crankcase extension as the sealing surface will become damaged.

  62. Locate the four threaded insert jack screw locations on the lower oil pan. Use four lower oil pan bolts in these locations, and tighten the bolts by hand 1 to 2 turns each in a uniform manner, rotating between bolts until the oil pan has full separation from the lower crankcase extension.
  63. Oil Pan (2) - Remove and DISCARD
  64. GM5517356Courtesy of GENERAL MOTORS COMPANY

    Oil Pump Suction Pipe Bolt (1) - Remove

  65. Oil Pump Suction Pipe (2) - Remove
  66. Oil Pump Suction Pipe Gasket (3) - Remove and DISCARD
  67. GM5517355Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) - Disconnect

  68. GM5150614Courtesy of GENERAL MOTORS COMPANY

    Engage the EN-52476  Flywheel Lock and Alignment Tool (1) slide through the flex plate teeth.

  69. GM5138790Courtesy of GENERAL MOTORS COMPANY

    Automatic Transmission Flex Plate Bolt (1) - Remove and DISCARD [8x]

  70. Automatic Transmission Flex Plate (2) - Remove
  71. GM5140979Courtesy of GENERAL MOTORS COMPANY

    Crankshaft Position Sensor Reluctor Ring (1) - Remove

  72. GM5642505Courtesy of GENERAL MOTORS COMPANY

    Crankshaft Position Sensor Bolt (1) - Remove

  73. Crankshaft Position Sensor (2) - Remove
  74. GM5004098Courtesy of GENERAL MOTORS COMPANY

    Crankshaft Rear Oil Seal Housing Bolt (1) - Remove [14x]

  75. Crankshaft Rear Oil Seal Housing (2) - Remove and DISCARD
  76. The engine block sealing surface must be cleaned with low VOC brake clean, allow it to sit on the surface for several minutes to loosen the RTV. Use a plastic putty knife or plastic scraper to remove the old RTV. Once the RTV is removed, spray a second application of low VOC brake cleaner to the sealing surface on the engine block, wipe off with a clean lint free cloth. Wipe the new cover with low VOC brake clean on the sealing surface / bead path, then wipe it off with a clean lint free cloth.
    77. WARNING:

    Wear safety glasses when using compressed air, as flying dirt particles may cause eye injury.

  77. Clean out the crankshaft rear oil seal housing locating pin bore with low VOC brake clean and dry out with shop air.
  78. GM5153596Courtesy of GENERAL MOTORS COMPANY

    Compress the balancer chain tensioner (1).

  79. EN-52593  Chain Tensioner Retention Pin (2) - Install
  80. GM5153597Courtesy of GENERAL MOTORS COMPANY

    Balancer Chain Tensioner Bolt (1) - Remove [2x]

  81. Balancer Chain Tensioner (2) - Remove
  82. GM5153224Courtesy of GENERAL MOTORS COMPANY

    Balancer Shaft Sprocket Bolt (1) - Remove and DISCARD

  83. Balancer Shaft Driven Sprocket (2) - Remove
  84. Balancer Chain (3) - Remove
  85. Remove the lower bolt on the balancer chain guide.
  86. GM5932169Courtesy of GENERAL MOTORS COMPANY

    Lower Crankcase Extension Bolt (1) - Remove

  87. Lower Crankcase Extension Bolt (2) - Remove
  88. Lower Crankcase Extension Bolt (3) - Remove
  89. Lower Crankcase Extension Bolt (4) - Remove [8x]
  90. Lower Crankcase Extension Bolt (5) - Remove [3x]
  91. GM5932171Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Use a plastic pry tool when prying case halves apart to prevent damage to the Upper and Lower Crankcase surface. Do not continue to push the pry tool in the crankcase as the Upper and Lower Crankcase halves separate. This may damage the sealing surface.

    Lower Crankcase Extension (1) - Remove

  92. Oil Pan High Pressure Port Seal (2) - Remove and DISCARD
  93. GM5004114Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • Lay the lower bearings and the caps aside in the order they were removed.
    • The connecting rod caps must remain with the original connecting rod. The caps must be oriented identical to original installation.

    Connecting Rod Bolt (1) - Remove and DISCARD [8x]

  94. Connecting Rod Cap (2) - Remove [4x]
  95. Connecting Rod Bearing (3) - Remove and DISCARD [4x]
  96. GM5026484Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Lay the piston and the upper bearings aside in the order they were removed.

    Install EN-52525  Connecting Rod Guide Set into the connecting rod bolt holes.

  97. Using the EN-52525  Connecting Rod Guide Set, push the connecting rod and piston through the top of the cylinder. DO NOT scratch the crankshaft journal or cylinder wall and DO NOT damage the oil jets when removing the connecting rod and piston.
  98. Connecting Rod (1) - Remove [4x]
  99. Remove the EN-52525  Connecting Rod Guide Set from the connecting rod bolt holes.
    100. NOTE:
    • The shear surfaces of the connecting rod and the connecting rod bearing cap form a unique fit and must not be swapped or damaged. Do not lay down on the shear surfaces.
    • Lay the lower bearings and the caps aside in the order they were removed.
  100. Connecting Rod Bearing (2) - Remove and DISCARD [4x]
scientia non olet · About LEMON Manuals