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Home >> Chevrolet >> 2009 >> Corvette Base, 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Manual Transmission - TREMEC 6-Speed) >> Repair Instructions - Off Vehicle >> Main Shaft and Input Shaft Assemble >> Mainshaft

Main Shaft and Input Shaft Assemble: Mainshaft

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    Fig 1: View Of 3rd Speed Gear Caged Needle Bearing
    GM1938390Courtesy of GENERAL MOTORS CORP.
  1. Install the 3rd speed gear caged needle bearing.
  2. Install the spacer.
    3. Fig 2: View Of Alignment Marks On Synchronizer Hub & Synchronizer Sleeve
    GM4810Courtesy of GENERAL MOTORS CORP.
  3. Check the 3rd/4th speed gear synchronizer assembly scribe marks for correct positions.
    4. Fig 3: View of 3rd/4th Synchronizer Assembly
    GM1938451Courtesy of GENERAL MOTORS CORP.
  4. Install the 3rd/4th synchronizer assembly as follows:
    1. Start the press operation.
    2. STOP pressing before the keys engage the blocking ring slots.
    3. Lift and rotate the 3rd speed gear in order to engage the keys with the blocking ring.
    4. Continue pressing until the synchronizer is seated.
  5. Install the following parts in order, using the J 36183  , the J 36184  , and a hydraulic press. See Special Tools .
    1. The 3rd speed gear
    2. The 3rd speed gear inner cone
    3. The 3rd speed gear friction cone
    4. The 3rd speed gear blocking ring
    5. The 3rd/4th speed gear synchronizer assembly (the groove on the sleeve faces the 3rd speed gear).
    6. Fig 4: View Of 3rd/4th Synchronizer Retaining Ring
    GM1938384Courtesy of GENERAL MOTORS CORP.
  6. Install the 3rd/4th synchronizer retainer ring.
    7. Fig 5: View Of New Mainshaft Small Tapered Bearing, Special Tool J 39473 & Rubber Mallet
    GM1938452Courtesy of GENERAL MOTORS CORP.
  7. Install a new mainshaft small tapered bearing, using the J 39473  and a rubber mallet. See Special Tools .
    8. Fig 6: View Of 2nd Speed Gear Caged Needle Bearing & Spacer
    GM1938379Courtesy of GENERAL MOTORS CORP.
  8. Install the 2nd speed gear caged needle bearing and bearing spacer.
    9. Fig 7: View Of 1st/2nd Synchronizer Assembly
    GM1938453Courtesy of GENERAL MOTORS CORP.
  9. Do the following when installing the 1st/2nd synchronizer assembly:
    1. Start the press operation.
    2. Stop pressing before the keys engage the blocking ring slots.
    3. Lift and rotate the 2nd speed gear in order to engage the keys with the blocking ring.
    4. Continue pressing until the synchronizer is seated.
  10. Install the following parts in order using the J 39371  and a hydraulic press:
    1. The 2nd speed gear
    2. The 2nd speed gear inner cone
    3. The 2nd speed gear friction cone
    4. The 2nd speed gear blocking ring
    5. The 1st/2nd synchronizer assembly (The ID groove on the sleeve faces the 1st speed gear.)
    11. Fig 8: View Of Two Piece Thrust Washer, Blocking Ring, Friction Cone & Inner Cone
    GM1938454Courtesy of GENERAL MOTORS CORP.
  11. Install the following parts in order:
    1. The two piece thrust washer
    2. The blocking ring
    3. The friction cone
    4. The inner cone
    12. Fig 9: View Of 1st Speed Gear Components
    GM105701Courtesy of GENERAL MOTORS CORP.
  12. Install the following parts in order:
    1. The 1st speed gear locking ring
    2. The 1st speed gear caged needle bearing
    3. The 1st speed gear
  13. Using J 39441  and J-39441-20  , install the mainshaft large tapered bearing. See Special Tools .
    14. Fig 10: View Of Special Tools J 39441, J-39441-20 & 6th Speed Gear
    GM1938455Courtesy of GENERAL MOTORS CORP.
  14. Using J 39441  (1) and J-39441-20  (2), install the 6th speed gear. See Special Tools .
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