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Home >> Chevrolet >> 2010 >> Camaro LS, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Manual Transmission - TREMEC 6-Speed) >> Repair Instructions - Off Vehicle >> Main Shaft and Input Shaft Disassemble >> Mainshaft

Main Shaft and Input Shaft Disassemble: Mainshaft

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Mainshaft Components
    GM2397595Courtesy of GENERAL MOTORS CORP.
    NOTE: Measure the 4th speed gear synchronizer wear gap before disassembling the mainshaft.
  1. Install the input shaft (3) in the clutch housing (4).
  2. Install the mainshaft (1) on the input shaft (3).
  3. Using a feeler gauge measure the gap (2) between the 4th speed gear blocking ring and the 4th speed gear.
  4. Replace the 4th speed gear friction cone and blocking ring when the gap is less than 1.27 mm (0.050 in).
    5. Fig 2: Mainshaft Components
    GM2397593Courtesy of GENERAL MOTORS CORP.
    CAUTION: Do not overtighten the J 36513 split plate past the gear teeth or damage to gear may occur.
  5. Using the J 36513:  plate, close the split plate only enough to support the gear teeth, and the J 39442:  adapter, remove the following parts in order:
    1. The 6th speed driven gear (1)
    2. The mainshaft center bearing (2)
    3. If an O-ring is present on the mainshaft, remove and discard the O-ring (3). The O-ring was used for manufacturing purposes only.
    4. The 1st speed drive gear (4)
    5. The 1st speed drive gear needle bearing (5)
    6. Fig 3: Identifying 1st Speed Gear Components
    GM2102227Courtesy of GENERAL MOTORS CORP.
  6. Remove the following parts in order:
    1. The 1st speed gear inner cone (1)
    2. The 1st speed gear outer cone (2)
    3. The 1st speed gear synchronizer blocking ring (3)
    4. The 1st speed gear locking ring (4)
    5. The 1st speed gear two piece washer (5)
    7. Fig 4: View Of Alignment Marks On Synchronizer Hub & Synchronizer Sleeve
    GM4810Courtesy of GENERAL MOTORS CORP.
    NOTE: The synchronizer hubs and sliding sleeves are a selected assembly. Keep these parts together as originally assembled.
  7. Scribe a mark on the synchronizer hub and on the sleeve. This will help you to reinstall the parts in the same position.
    8. Fig 5: Identifying 2nd Speed Gear Components
    GM2102228Courtesy of GENERAL MOTORS CORP.
  8. Use the J 36513:  plate (2) in an inverted position, J 39442:  adapter (1), and a hydraulic press to remove the following components:
    • The 2nd speed drive gear (3)
    • The 2nd speed gear inner cone (4) will press off with the 2nd speed gear
    • The 2nd speed gear outer cone (5)
    • The 2nd gear synchronizer blocking ring (6)
    • 1st/2nd synchronizer hub (7)
    9. Fig 6: View Of 2nd Speed Gear Spacer & Caged Needle Bearing
    GM2102230Courtesy of GENERAL MOTORS CORP.
  9. Remove the 2nd speed gear spacer (1) and caged needle bearing (2).
    10. Fig 7: Identifying Mainshaft Small Tapered Bearing
    GM2102231Courtesy of GENERAL MOTORS CORP.
  10. Remove the mainshaft small tapered bearing (3). Use the J 39442:  adapter (1), the J 39443:  plate (2), and a hydraulic press.
  11. Discard the small tapered bearing.
    12. Fig 8: Identifying Retainer Ring
    GM2102232Courtesy of GENERAL MOTORS CORP.
  12. Remove the retainer (1).
    13. Fig 9: View Of Alignment Marks On Synchronizer Hub & Synchronizer Sleeve
    GM4810Courtesy of GENERAL MOTORS CORP.
    NOTE: The synchronizer hubs and sliding sleeves are a selected assembly. Keep these parts together as originally assembled.
  13. Scribe a mark on the synchronizer hub and on the sleeve. This will help you to reinstall the parts in the same position.
    14. Fig 10: Identifying 3rd Speed Gear Components
    GM2102233Courtesy of GENERAL MOTORS CORP.
  14. Use the J 39473:  installer (1), V-blocks, and a hydraulic press to remove the following components:
    • The 3rd/4th speed synchronizer assembly (6)
    • The 3rd speed gear blocking ring (5)
    • The 3rd speed gear outer cone (4)
    • The 3rd speed gear inner cone (3)
    • The 3rd speed gear (2)
    15. Fig 11: Identifying 3rd Speed Drive Gear Spacer & Caged Needle Bearing
    GM2102234Courtesy of GENERAL MOTORS CORP.
  15. Remove the 3rd speed drive gear spacer (1).
  16. Remove the 3rd speed gear caged needle bearing (2).
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