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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Manual Transmission - M32) >> Repair Instructions - On Vehicle >> Input and Main Shaft Bearing Replacement >> Upper Main Shaft Bearing Replacement

Upper Main Shaft Bearing Replacement

WARNING: This page is about a different variant/trim than selected.
  1. Clean the upper main shaft (2) very accurate, clean the hollow shaft from the inside (arrow). Use a part cleaner (1) and compressed air.
    Fig 1: Identifying Upper Main Shaft
    GM4247005Courtesy of GENERAL MOTORS COMPANY
  2. Dry the upper main shaft.
  3. Remove and DISCARD the retaining ring (1) from the upper main shaft, using the GE-396  pliers.
    Fig 2: Identifying Retaining Ring
    GM4081121Courtesy of GENERAL MOTORS COMPANY
    NOTE: Some transmissions do NOT have this retaining ring.
  4. Cut in the bearing cage (2) of the upper main shaft outer bearing in several places on the top, using side cutting pliers (1).
    Fig 3: Identifying Bearing Cage
    GM4087976Courtesy of GENERAL MOTORS COMPANY
  5. Cut in the bearing cage (2) of the upper main shaft outer bearing in several places on the bottom, using side cutting pliers (1). If necessary, use a screwdriver (3) to lift the cage.
    Fig 4: Locating Bearing Cage
    GM4081123Courtesy of GENERAL MOTORS COMPANY
  6. Remove and DISCARD the cage.
  7. Remove and DISCARD all rollers.
  8. Install the DT-60000-10  remover (1) to the outer bearing inner ring (2) of the upper main shaft, make sure of proper seat (arrow).
    Fig 5: Identifying DT-60000-10 Remover And Outer Bearing Inner Ring
    GM4081124Courtesy of GENERAL MOTORS COMPANY
  9. Tighten 2 nuts of the DT-60000-10  remover.
  10. Support the outer bearing inner ring (3), using the DT-60000-10  remover (1).
    Fig 6: Identifying Outer Bearing Inner Ring, DT-60000-10 Remover And CH-500-5 Arbor
    GM4081125Courtesy of GENERAL MOTORS COMPANY
  11. Remove the outer bearing inner ring from the upper main shaft. Press out the upper main shaft, using the CH-500-5  arbor (2).
    NOTE: Hold the upper main shaft before pressing is finished, the upper main shaft must not fall to the floor.
  12. Remove the DT-60000-10  remover (1) from the outer bearing inner ring (2).
    Fig 7: Identifying DT-60000-10 Remover And Inner Bearing Inner Ring
    GM4081118Courtesy of GENERAL MOTORS COMPANY
  13. DISCARD the outer bearing inner ring.
  14. Remove the 4th gear gearwheel (1) from the upper main shaft.
    Fig 8: 4th Gear Gearwheel
    GM2811221Courtesy of GENERAL MOTORS COMPANY
  15. Remove the 4th gear needle bearing (2) from the upper main shaft.
  16. Remove 3 4th gear synchronizer rings (1) from the upper main shaft.
    Fig 9: 4th Gear Synchronizer Rings
    GM2811224Courtesy of GENERAL MOTORS COMPANY
  17. Remove the 3rd/4th gear selector sleeve (2) from the 3rd / 4th gear sleeve carrier.
    Fig 10: 3rd/4th Gear Selector Sleeve And Spring Catches
    GM2811226Courtesy of GENERAL MOTORS COMPANY
  18. Remove 3 spring catches (1, 3) from the sleeve carrier.
  19. Remove and DISCARD the sleeve carrier retaining ring (1) from the upper main shaft, using the GE-396  pliers.
    Fig 11: Sleeve Carrier Retaining Ring
    GM2811228Courtesy of GENERAL MOTORS COMPANY
  20. Support the 3rd gear gearwheel (3), using the DT-307-B  plate (1).
    Fig 12: Supporting 3rd Gearwheel Using Special Tool Plate
    GM2811231Courtesy of GENERAL MOTORS COMPANY
  21. Remove the 3rd / 4th gear sleeve carrier (2) and the 3rd gear gearwheel from the upper main shaft. Press out the upper main shaft.
    NOTE: Hold the upper main shaft before pressing is finished, the upper main shaft must not fall to the floor.
  22. Remove the 3rd / 4th gear sleeve carrier (2) and the 3 3rd gear synchronizer rings (1) from the 3rd gear gearwheel (3).
    Fig 13: 3rd Gear Synchronizer Rings, 3rd/4th Gear Sleeve Carrier And 3rd Gear Gearwheel
    GM2811232Courtesy of GENERAL MOTORS COMPANY
  23. Remove the 3rd gear needle bearing (1) from the upper main shaft.
    Fig 14: 3rd Gear Needle Bearing
    GM2811234Courtesy of GENERAL MOTORS COMPANY
  24. Remove and DISCARD the distance bushing retaining ring (1) from the upper main shaft, using the GE-396  pliers.
    Fig 15: Distance Bushing Retaining Ring
    GM2811236Courtesy of GENERAL MOTORS COMPANY
  25. Support the reverse gear gearwheel (4), using the DT-307-B  plate (1).
    Fig 16: Gearwheel Support Plate
    GM2811238Courtesy of GENERAL MOTORS COMPANY
  26. Remove the distance bushing (2), the reverse gear synchronizer system (3) and the reverse gear gearwheel (4) from the upper main shaft. Press out the upper main shaft.
    NOTE: Hold the upper main shaft before pressing is finished, the upper main shaft must not fall to the floor.
  27. Remove the sleeve carrier assembly (2) and the synchronizer ring (1) of the reverse gear from the reverse gear gearwheel (3).
    Fig 17: Sleeve Carrier Assembly And Synchronizer Ring
    GM2811240Courtesy of GENERAL MOTORS COMPANY
  28. Remove the selector sleeve (1) from the reverse gear sleeve carrier.
    Fig 18: Spring Catches And Sleeve Carrier
    GM2811241Courtesy of GENERAL MOTORS COMPANY
  29. Remove 3 spring catches (2, 3) from the sleeve carrier.
  30. Remove the reverse gear needle bearing (1) from the upper main shaft.
    Fig 19: Reverse Gear Needle Bearing And Upper Main Shaft
    GM2811243Courtesy of GENERAL MOTORS COMPANY
  31. Remove the ring (2) and the cap (1) from the DT-46759  sleeve (3).
    Fig 20: Special Tools
    GM2811245Courtesy of GENERAL MOTORS COMPANY
  32. Support the upper main shaft, using the DT-46759  sleeve (2). Press the inner bearing (1) against the gearwheel of the differential gear drive.
    Fig 21: Supporting Upper Main Shaft, Using Sleeve
    GM2811246Courtesy of GENERAL MOTORS COMPANY
    NOTE: This step is only to unstuck the inner bearing retaining ring. See next step.
  33. Remove and DISCARD the inner bearing retaining ring (1) from the upper main shaft, using the GE-396  pliers.
    Fig 22: Retaining Ring Clamps
    GM2811247Courtesy of GENERAL MOTORS COMPANY
  34. Support the inner bearing (1), using the DT-60000-30  sleeve (2).
    Fig 23: Removing Upper Main Shaft Inner Bearing
    GM2811249Courtesy of GENERAL MOTORS COMPANY
  35. Remove the inner bearing from the upper main shaft. Press out the upper main shaft.
  36. DISCARD the inner bearing.
  37. Clean all components of the upper main shaft, using a part cleaner (1).
    Fig 24: Identifying Upper Main Shaft
    GM4246999Courtesy of GENERAL MOTORS COMPANY
  38. Clean the upper main shaft (2) very accurate, clean the hollow shaft especially from the inside (lower arrow), clean all oil bores (upper arrows). Use a part cleaner and compressed air.
    NOTE: Remaining residue may lead to transmission failure.
  39. Dry all components of the upper main shaft.
  40. Check all components of the upper main shaft for damage.
    NOTE: Damaged upper main shaft parts must not be installed.
  41. Support the NEW upper main shaft inner bearing (1), using the DT-46759  sleeve (2).
    Fig 25: Special Tool Support Sleeve
    GM2811251Courtesy of GENERAL MOTORS COMPANY
  42. Install the inner bearing to the upper main shaft. Press in the upper main shaft.
  43. Measure the fitting of the NEW inner bearing retaining ring (1). Try different thicknesses of retaining ring.
    Fig 26: Inner Bearing Retaining Ring
    GM2811253Courtesy of GENERAL MOTORS COMPANY
    • Retaining ring must not fit loosely into the groove.
    • Too huge retaining ring can grind or block the reverse gear gearwheel.
    • Use the thickest retaining ring possible.
  44. Install NEW inner bearing retaining ring (1) to the upper main shaft, using the GE-396  pliers.
    Fig 27: Retaining Ring Clamps
    GM2811247Courtesy of GENERAL MOTORS COMPANY
  45. Install the reverse gear needle bearing (1) to the upper main shaft.
    Fig 28: Reverse Gear Needle Bearing And Upper Main Shaft
    GM2811243Courtesy of GENERAL MOTORS COMPANY
  46. Install the reverse gear gearwheel (1) to the upper main shaft.
    Fig 29: Installing Reverse Gearwheel To Upper Main Chaff
    GM2811255Courtesy of GENERAL MOTORS COMPANY
  47. Install the synchronizer ring (1) to the reverse gear gearwheel.
    Fig 30: Installing Synchronizer Ring
    GM2811257Courtesy of GENERAL MOTORS COMPANY
  48. Install the 3 spring catches (1) to the reverse gear sleeve carrier (2).
    Fig 31: Spring Catches And Reverse Gear Sleeve Carrier
    GM2811259Courtesy of GENERAL MOTORS COMPANY
  49. Install the reverse gear selector sleeve to the reverse gear sleeve carrier.
    NOTE: Make sure that the position and direction of installation is correct.
    • The peaked teeth (lower arrow) of the selector sleeve are orientated toward the reverse gear gearwheel.
    • The pits in the selector sleeve (upper arrow) must be installed in the position of the spring catches.
  50. Position the sleeve carrier assembly (1) on the DT-46759  sleeve.
    Fig 32: Sleeve Carrier Assembly
    GM2811260Courtesy of GENERAL MOTORS COMPANY
    NOTE: The peaked teeth of the selector sleeve (gearwheel-reverse-gear-side) are facing upwards.
  51. Position the upper main shaft (1) into the sleeve carrier assembly and the DT-46759  sleeve.
    Fig 33: Positioning Upper Main Shaft To Sleeve Carrier Assembly
    GM2811263Courtesy of GENERAL MOTORS COMPANY
  52. Turn the reverse gear gearwheel (1). Turning the gearwheel secures correct fitting of the synchronizer ring (2) into the sleeve carrier (small arrow).
    Fig 34: Turning Reverse Gearwheel
    GM2811264Courtesy of GENERAL MOTORS COMPANY
  53. Support the synchronizer system, using the DT-46759  sleeve (2).
    Fig 35: Supporting Synchronizer System
    GM2811265Courtesy of GENERAL MOTORS COMPANY
  54. Install the synchronizer system (1) and the reverse gear gearwheel to the upper main shaft. Press in the upper main shaft.
  55. Check free rotating reverse gear gearwheel.
  56. Install the distance bushing (2) to the upper main shaft. Press on the distance bushing, using the DT-46759  sleeve (1).
    Fig 36: Installing Distance Bushing
    GM2811267Courtesy of GENERAL MOTORS COMPANY
  57. Install the NEW distance bushing retaining ring (1) to the upper main shaft, using the GE-396  pliers.
    Fig 37: Distance Bushing Retaining Ring
    GM2811236Courtesy of GENERAL MOTORS COMPANY
  58. Install the 3rd gear needle bearing (1) to the upper main shaft.
    Fig 38: 3rd Gear Needle Bearing
    GM2811234Courtesy of GENERAL MOTORS COMPANY
  59. Install the 3rd gear gearwheel (1) to the upper main shaft.
    Fig 39: Installing 3rd Gearwheel To Upper Main Shaft
    GM2811268Courtesy of GENERAL MOTORS COMPANY
  60. Install the 3 3rd gear synchronizer rings (1, 2, 3)
    Fig 40: Ensuring Synchronizer Rings Fit
    GM2811269Courtesy of GENERAL MOTORS COMPANY
    NOTE: Make sure that the synchronizer rings fit.
    • Synchronizer ring (2) must fit correctly into the 3rd gear gearwheel (lower arrow).
    • Synchronizer rings (1, 3) must fit correctly together (upper arrow).
  61. Install the 3rd / 4th gear sleeve carrier (2) to the upper main shaft. Press on the sleeve carrier, using the DT-46759  sleeve (1).
    Fig 41: Making Sure Synchronizer Ring Fits
    GM2811273Courtesy of GENERAL MOTORS COMPANY
    NOTE: Make sure that the synchronizer ring fits.
    • Before pressing, the synchronizer ring must be aligned to the sleeve carrier (arrows).
  62. Install the NEW sleeve carrier retaining ring (1) to the upper main shaft, using the GE-396  pliers.
    Fig 42: Sleeve Carrier Retaining Ring
    GM2811228Courtesy of GENERAL MOTORS COMPANY
  63. Install the 3 spring catches (1) to the 3rd/4th gear sleeve carrier.
    Fig 43: Installing Spring Catches To 3rd/4th Gear Sleeve Carrier
    GM2811274Courtesy of GENERAL MOTORS COMPANY
  64. Install the selector sleeve (2) to the 3rd/4th gear sleeve carrier.
    NOTE: Make sure that the position of the selector sleeve is correct.
    • The pits in the selector sleeve (arrow) must be installed in the position of the spring catches.
  65. Install the 3 synchronizer rings (1) to the 3rd/4th gear sleeve carrier (2).
    Fig 44: Synchronizer Rings And 3rd/4th Gear Sleeve Carrier
    GM2811278Courtesy of GENERAL MOTORS COMPANY
  66. Install the 4th gear needle bearing (1) to the upper main shaft.
    Fig 45: 4th Gear Needle Bearing
    GM2811279Courtesy of GENERAL MOTORS COMPANY
  67. Install the 4th gear gearwheel (1) to the upper main shaft.
    Fig 46: 4th Gearwheel And Upper Main Shaft
    GM2811281Courtesy of GENERAL MOTORS COMPANY
    NOTE: Make sure that the synchronizer ring fits.

    Turn the 4th gear gearwheel. Turning the gearwheel secures correct fitting of the synchronizer ring into the gearwheel (arrow).

  68. Install the NEW upper main shaft outer bearing (2). Press on the bearing, using the DT-60000-60  installer (1) with function side "B".
    Fig 47: Identifying Upper Main Shaft Bearing And DT-60000-60 Installer
    GM4081141Courtesy of GENERAL MOTORS COMPANY
  69. Mark the NEW bearing cup of the upper main shaft bearing with II, in order to arrange the bearing cup later to the upper main shaft.
    Fig 48: Identifying Bearing Cup Of Upper Main Shaft Bearing
    GM4088079Courtesy of GENERAL MOTORS COMPANY
    NOTE: Use a permanent marker.
  70. Measure the fitting of the NEW retaining ring (1). Try different thicknesses of retaining ring.
    Fig 49: Identifying Retaining Ring
    GM4081121Courtesy of GENERAL MOTORS COMPANY
    • Retaining ring must NOT fit loosely into the groove.
    • Use the thickest retaining ring possible.
  71. Install a NEW retaining ring to the upper main shaft, using the GE-396  pliers.
  72. Check the upper main shaft for damage.
    NOTE: A damaged upper main shaft must not be installed.
  73. Perform function check.
    Fig 50: 3rd/4th Gear And Reverse Selector Sleeve
    GM2811285Courtesy of GENERAL MOTORS COMPANY
    1. Check free rotating of all gearwheels.
    2. Shift all gears.
      • 3rd / 4th gear selector sleeve (1)
      • Reverse gear selector sleeve (2)
    3. Shift upper main shaft into neutral position.
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