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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1741 (Automatic Transmission - ALLISON - Repair Instructions - Off Vehicle) >> Repair Instructions - Off Vehicle >> 1-2-3-4-5-6 Clutch Piston Housing Disassemble

1-2-3-4-5-6 Clutch Piston Housing Disassemble

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools

For equivalent regional tools, refer to Special Tools .

    Fig 1: View Of 1-2-3-4, 4-5 Clutch Housing Components
    GM1217076Courtesy of GENERAL MOTORS CORP.
  1. Position the 1-2-3-4, 4-5-6 clutch assembly (4) on the work table so that the rear of the assembly is up.
  2. Remove the retaining ring (1) from the 1-2-3-4, 4-5-6 clutch assembly.
  3. Remove the input sun gear (3) with the input drive flange (2) attached.
  4. Remove the input sun gear from the drive flange.
    5. Fig 2: Identifying Bronze Thrust Washer With Holes
    GM1217075Courtesy of GENERAL MOTORS CORP.
  5. Remove the bronze thrust washer (1) from the 4-5-6 drive hub (2).
    6. Fig 3: Identifying 4-5 Drive Hub, Thrust Bearing Assembly & Turbine Shaft
    GM1217072Courtesy of GENERAL MOTORS CORP.
  6. Remove the 4-5-6 drive hub (1).
    7. NOTE: The thrust bearing assembly may stick to the 1-2-3-4 clutch drive hub or the 4-5-6 clutch drive hub.
  7. Remove the thrust bearing assembly (2) from the rear of the 1-2-3-4 clutch drive hub (3) or the front of the 4-5-6 clutch drive hub (1).
  8. Remove the 1-2-3-4 clutch drive hub (3).
    9. NOTE: The thrust bearing assembly may stick to the rear of the turbine shaft or the front of the 1-2-3-4 clutch drive hub.
  9. Remove the thrust bearing assembly (4) from the rear of the turbine shaft (5) or the front of the 1-2-3-4 clutch drive hub (3).
    10. Fig 4: Identifying Clutch Plates
    GM1217073Courtesy of GENERAL MOTORS CORP.
  10. Remove seven 4-5-6 clutch steel plates (1) and six 4-5-6 clutch fiber plates (2) from the 1-2-3-4, 4-5-6 clutch housing (3).
    11. Fig 5: View Of 1-2-3-4 Clutch Backing Plate
    GM1217070Courtesy of GENERAL MOTORS CORP.
  11. Remove the internal spiral retaining ring (1) from the 1-2-3-4 clutch backing plate (3).
  12. Remove the retaining ring (2) from the turbine shaft (4).
  13. Remove the 1-2-3-4 clutch backing plate (3) from the turbine shaft (4).
    14. Fig 6: View Of 1-2-3-4 Clutch Plates
    GM1217065Courtesy of GENERAL MOTORS CORP.
  14. Remove six 1-2-3-4 clutch fiber plates (1) and six 1-2-3-4 clutch steel plates (2) from the turbine shaft (3).
    15. Fig 7: Locating Turbine Shaft & Overlap Seal Rings
    GM1217064Courtesy of GENERAL MOTORS CORP.
    WARNING: Personal injury and/or property damage may result from the movement of the 1-2-3-4, 4-5-6 clutch housing or the turbine shaft. The 1-2-3-4, 4-5-6 clutch housing and turbine shaft are held together by a retaining ring. Removing the retaining ring allows the turbine shaft and the 1-2-3-4, 4-5-6 clutch housing to move freely. When removing the retaining ring, make sure the 1-2-3-4, 4-5-6 clutch housing and the turbine shaft are restrained from moving.
  15. Remove the retaining ring (1) from the turbine shaft (3).
  16. Remove the 1-2-3-4, 4-5-6 clutch housing (2) from the rear of the turbine shaft.
  17. Remove 2 overlap seal rings (4) from the turbine shaft.
    18. Fig 8: Positioning 1-2-3-4, 4-5-6 Clutch Housing On Base Of J 24204-2
    GM1580980Courtesy of GENERAL MOTORS CORP.
  18. Position the 1-2-3-4, 4-5-6 clutch housing (5) on the base of J 24204-2:  assembly (6) so that the rear of the housing is facing up.
  19. Install J 47339-1:  compressor (4) onto the 1-2-3-4 clutch balance piston.
  20. Install the J 24204-2:  assembly ball bearing (3) and washer (2) onto the shaft of J 24204-2:  assembly.
  21. Install the J 24204-2:  assembly wing nut (1) onto the shaft of J 24204-2:  assembly (6).
    22. Fig 9: 1-2-3-4-, 4-5-6 Clutch Housing & J 24204-2
    GM1580982Courtesy of GENERAL MOTORS CORP.
  22. Compress the 1-2-3-4 clutch balance piston return spring assembly until the retaining ring (5) can be removed.
  23. Remove the retaining ring (5) from the groove in the 1-2-3-4 clutch housing.
  24. Remove the retaining ring (5).
  25. Remove all J tools.
    26. Fig 10: 1-2-3-4 Clutch Piston Housing Components
    GM1580984Courtesy of GENERAL MOTORS CORP.
  26. Remove the 1-2-3-4 clutch balance piston (1) from the 1-2-3-4 clutch housing (4).
  27. Remove the 1-2-3-4 clutch piston return spring assembly (2) from the 1-2-3-4 clutch housing (4).
  28. Remove the 1-2-3-4 clutch piston (3) from the 1-2-3-4 clutch housing (4).
    29. Fig 11: Locating Clutch Piston Seal Rings
    GM1217058Courtesy of GENERAL MOTORS CORP.
  29. Remove the seal rings (1 and 2) from the 1-2-3-4 clutch piston (3).
    30. Fig 12: 1-2-3-4-, 4-5-6 Clutch Housing & J 24204-2
    GM1580985Courtesy of GENERAL MOTORS CORP.
  30. Position the 1-2-3-4, 4-5-6 clutch housing (8) on the base of J 24204-2:  assembly (10) so that the rear of the housing is facing up.
  31. Align J 47339-2:  protector J 47339-2:  protector (7) so that the bowl is facing down.
  32. Install J 47339-2:  protector (7) onto the shaft of J 24204-2:  assembly and onto the inner hub of the 1-2-3-4, 4-5-6 clutch housing (9). Make sure the rim of J 47339-2:  protector (7) almost touches the retaining ring.
  33. Install the spring (5) of J 47339-1:  compressor onto the shaft of J 24204-2:  assembly.
  34. Install J 24204-2:  assembly (4) onto the shaft of J 24204-2:  assembly.
  35. Install the J 24204-2:  assembly ball bearing (3) and washer (2) onto the shaft of J 24204-2:  assembly.
  36. Install the J 24204-2:  assembly wing nut (1) onto the shaft of J 24204-2:  assembly.
  37. Compress the 4-5-6 clutch piston return spring assembly until the retaining ring (6) can be removed.
  38. Remove the retaining ring (6) from the groove in the 1-2-3-4, 4-5-6 clutch housing inner hub and move the retaining ring over the top of J 47339-2:  protector (7).
  39. Remove all J tools from the 1-2-3-4, 4-5-6 clutch housing.
  40. Remove the retaining ring (6) from the 1-2-3-4, 4-5-6 clutch housing.
    41. Fig 13: Removing Components From 1-2-3-4, 4-5-6 Clutch Housing
    GM1580986Courtesy of GENERAL MOTORS CORP.
  41. Remove the 1-2-3-4 clutch piston housing, the 4-5-6 piston return spring assembly, and the 4-5-6 clutch piston, as an assembly (1), from the 1-2-3-4, 4-5-6 clutch housing (2).
    42. Fig 14: Using J 43772 To Remove 1-2-3-4 Clutch Housing From 4-5-6 Clutch Piston
    GM1580988Courtesy of GENERAL MOTORS CORP.
  42. Position the 4-5-6 piston and 1-2-3-4 clutch housing horizontally on a work table.
  43. Hold the 4-5-6 piston and 1-2-3-4 clutch housing, and place J 43772:  installer J 43772:  installer against the 1-2-3-4 clutch housing.
  44. Using a rubber mallet, gently tap on J 43772:  installer to remove the 1-2-3-4 clutch housing from the 4-5-6 clutch piston.
    45. Fig 15: Removing 4-5-6 Clutch Piston Return Springs
    GM1581151Courtesy of GENERAL MOTORS CORP.
  45. Remove the 4-5-6 clutch piston return springs (2) from the 4-5-6 clutch piston (3).
    46. Fig 16: View Of 1-2-3-4, 4-5 Clutch Housing Inner Hub O-Ring
    GM1217054Courtesy of GENERAL MOTORS CORP.
  46. Remove the O-ring (1) from the inner hub of the 1-2-3-4, 4-5-6 clutch housing (2).
    47. Fig 17: 1-2-3-4 Clutch Piston Housing Seal Ring
    GM1580991Courtesy of GENERAL MOTORS CORP.
  47. Remove the seal ring (1) from the 1-2-3-4 clutch housing (2).
    48. Fig 18: Piston Seal Rings
    GM1580989Courtesy of GENERAL MOTORS CORP.
  48. Remove the piston seal rings (1 and 2) from the 4-5-6 clutch piston (3).
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