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Home >> Cadillac >> 2021 >> XT5 Sport >> Repair and Diagnosis >> External Pages >> Different car >> Section 898 (Transfer Case - Mp 3023/3024 (NQH) - Repair Instructions - Off Vehicle) >> Repair Instructions - Off Vehicle >> Transfer Case Disassemble (with MYD) >> Disassemble Procedure

Disassemble Procedure

WARNING: This page is about a different car, the 2023 GMC Sierra 3500 HD and 2023 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. GM5342481Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • Always secure with the pivot pin after rotating.
    • The transfer case can be rotated 360 degrees to facilitate repair.

    Install the DT-45759  Assembly Fixture (4) to the transfer case (5) with transfer case nuts (3).

  2. Mount the DT-45759  Assembly Fixture (4) and transfer case (5) to the DT-3289-20  Holding Fixture (2) and secure with pivot pin (1).
  3. GM5538457Courtesy of GENERAL MOTORS COMPANY

    Transfer Case Two/Four Wheel Drive Actuator Sensor Bolt (2) - Remove [4x]

  4. Transfer Case Four Wheel Drive Actuator (1) - Remove
  5. GM5538480Courtesy of GENERAL MOTORS COMPANY

    Transfer Case Two/Four Wheel Drive Actuator Position Sensor Bolt (3) - Remove [2x]

  6. Transfer Case Two/Four Wheel Drive Actuator Position Sensor (2) - Remove
  7. Transfer Case Two/Four Wheel Drive Actuator Position Sensor Gasket (1) - Remove and DISCARD
  8. GM5538484Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Remove ONLY if the transfer case vent is damaged.

    Transfer Case Vent (1) - Remove and DISCARD

  9. Transfer Case Access Hole Plug (2) - Remove and DISCARD [2x]
  10. Transfer Case Oil Fill Plug (3) - Remove
  11. Transfer Case Oil Drain Plug (4) - Remove
  12. GM4867814Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Transfer Case Seal Removal Caution .

    Transfer Case Rear Output Shaft Seal (1) - Remove and DISCARD

  13. GM6304364Courtesy of GENERAL MOTORS COMPANY

    Transfer Case Half Bolt (1) - Remove [20x]

    14. CAUTION:

    Refer to Machined Surface Damage Caution .

  14. Transfer Case Rear Extension (2) - Remove
    1. Use snap ring pliers to release the transfer case rear output shaft rear bearing outer retaining ring (3) from the transfer case rear output shaft rear bearing.
    2. Split the case apart using the DT-50228  Transfer Case Housing Separator (4) alternating at 3 locations.
  15. Transfer Case Rear Output Shaft Rear Bearing Outer Retaining Ring (3) - Remove and DISCARD
  16. GM5735788Courtesy of GENERAL MOTORS COMPANY

    Transfer Case Two/Four Wheel Drive Compound Gear Bracket Bolt (1) - Remove [3x]

  17. Transfer Case Two/Four Wheel Drive Compound Gear Bracket (2) - Remove
  18. GM5735786Courtesy of GENERAL MOTORS COMPANY

    Transfer Case Two/Four Wheel Drive Compound Gear (1) - Remove

  19. Transfer Case Oil Pump Suction Pipe (3) - Remove
  20. Transfer Case Oil Pump Suction Pipe Seal (2) - Remove and DISCARD
  21. GM5845627Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • Transfer case for transmission RPO's MGM, MGU, and MKM shown. Steps are the same for transmission RPO MYD.
    • Mount the assembly into a soft-jaw vice or holding fixture for disassembly.

    Transfer Case Rear Output Shaft Assembly (1) - Remove

  22. Transfer Case Two/Four Wheel Drive Actuator Shaft (2) - Remove
  23. Transfer Case High/Low Clutch (3) - Remove
  24. Transfer Case Front Output Shaft Drive Chain (4) - Remove
  25. GM6308689Courtesy of GENERAL MOTORS COMPANY

    Transfer Case Rear Output Shaft Rear Bearing Retaining Ring (1) - Remove and DISCARD

    26. NOTE:

    Use an arbor press or suitable puller to remove the transfer case rear output shaft rear bearing (2) from the rear output shaft.

  26. Transfer Case Rear Output Shaft Rear Bearing (2) - Remove and DISCARD
  27. Transfer Case Rear Output Shaft Rear Bearing Retaining Ring (1) - Remove and DISCARD
  28. GM5905964Courtesy of GENERAL MOTORS COMPANY

    Transfer Case Oil Pump (1) - Remove

  29. GM6308701Courtesy of GENERAL MOTORS COMPANY

    Transfer Case Front Output Shaft Drive Sprocket Retaining Ring (1) - Remove and DISCARD

  30. Transfer Case Front Output Shaft Drive Sprocket Spacer (2) - Remove
  31. Transfer Case Front Output Shaft Drive Sprocket (3) - Remove
  32. Transfer Case Rear High/Low Clutch Gear Thrust Bearing Pin (4) - Remove
  33. GM5971965Courtesy of GENERAL MOTORS COMPANY

    Transfer Case Rear Output Shaft Bearing Spacer (1) - Remove

  34. Transfer Case Two/Four Wheel Drive Clutch Retaining Ring (2) - Remove
  35. Transfer Case Four Wheel Drive Clutch Shim (3) - Remove
  36. GM5845635Courtesy of GENERAL MOTORS COMPANY

    Transfer Case Clutch Hub (1) - Remove

  37. Transfer Case Four Wheel Drive Clutch Pressure Plate Spring (2) - Remove
  38. Transfer Case Four Wheel Drive Clutch Friction Plate (3) - Remove [13x]
  39. Transfer Case Four Wheel Drive Clutch Pressure Plate (4) - Remove [12x]
  40. GM5845642Courtesy of GENERAL MOTORS COMPANY

    Transfer Case Four Wheel Drive Clutch Pressure Plate (1) - Remove

  41. Transfer Case Scissor Mechanism Thrust Bearing (2) - Remove
  42. Transfer Case Scissor Mechanism Lever (3) - Remove
  43. Transfer Case Scissor Lever Ball (4) - Remove [5x]
  44. Transfer Case Scissor Mechanism Lever (5) - Remove
  45. Transfer Case Scissor Mechanism Thrust Bearing (6) - Remove
  46. GM5343087Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Machined Surface Damage Caution .

    Transfer Case Input Shaft Seal (1) - Remove and DISCARD

    1. Drill a pilot hole, as required, and insert a self-tapping screw into the body of the transfer case input shaft seal (1).
    2. Use a plier or slide hammer type tool to remove the transfer case input shaft seal (1) from the bore.
  47. GM6305461Courtesy of GENERAL MOTORS COMPANY
    WARNING:

    Do not rotate the transfer case and holding fixture with the retaining ring removed. Rotating may cause the input shaft/planetary assembly to fall from the transfer case, resulting in personal injury.

    Transfer Case Input Shaft Bearing Outer Retaining Ring (1) - Remove and DISCARD

  48. GM6306039Courtesy of GENERAL MOTORS COMPANY

    Transfer Case Input Shaft/Planetary Assembly (1) - Remove

  49. Transfer Case Input Shaft Retaining Ring (2) - Remove and DISCARD
  50. Transfer Case High/Low Locking Plate (3) - Remove
  51. Transfer Case Input Shaft Washer (4) - Remove
  52. Transfer Case Input Shaft (5) - Remove
  53. Transfer Case Planetary Carrier Sun Gear Thrust Washer (6) - Remove
  54. Transfer Case High/Low Planetary Carrier (7) - Remove
  55. GM6306044Courtesy of GENERAL MOTORS COMPANY

    Transfer Case Input Shaft Inner Retaining Ring (1) - Remove and DISCARD

  56. Transfer Case Input Shaft Bearing (2) - Remove and DISCARD
  57. GM6306045Courtesy of GENERAL MOTORS COMPANY

    Transfer Case Front Output Shaft Oil Slinger (1) - Remove and DISCARD

  58. Remove and DISCARD the transfer case front output shaft seal (2) by prying upward in multiple locations with a suitable tool.
  59. GM5343093Courtesy of GENERAL MOTORS COMPANY

    Use an arbor press and suitable adapter to press the transfer case front output shaft assembly (2) from the transfer case front case half (1).

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