Transmission Front Case Disassemble

Tools Required

• J 44707  T Bar Push Puller
• J 44728  Bearing Race Remover. See Special Tools .
• J 44733  Bearing Race Remover. See Special Tools .
• J 44736  Bridge and Forcing Screw. See Special Tools .
• J 44737  Shift Rail Bearing Remover

NOTE: Refer to MACHINED SURFACE DAMAGE NOTICE in Cautions and Notices.
IMPORTANT: Only remove the bearings if replacing the bearings. Do not use the bearings again after removal.
1. Inspect the bearings for damage or wear. Refer to Bearings and Spacers Cleaning and Inspection .
2. Remove the shift rail bearing using the J 44707  (1) and the J 44737  (2).
   Fig 1: Removing Shift Rail Bearing

   Courtesy of GENERAL MOTORS CORP.
   1. Expand the J 44737  (2) to fit securely in the bearing.
   2. Install the J 44707  (1) to the J 44737  (2).
   3. Rest the bar of the J 44707  (1) on the case. Do not let the bar of the J 44707  damage the case.
   4. Remove the shift rail bearing.
3. Remove the countershaft front bearing race using the J 44736  (1) and the J 44728  (2). See Special Tools .
   1. Install the J 44728  (2) in order for the fingers to fit in the notches in the case. See Special Tools .
   2. Expand the J 44728  (2) to fit securely in the bearing race. See Special Tools .
   3. Align the legs of the J 44736  to rest on the webbing of the case. See Special Tools .
   4. Remove the countershaft front bearing race.
      Fig 2: Removing Countershaft Front Bearing Race

      Courtesy of GENERAL MOTORS CORP.
4. Remove the countershaft bearing shims and discard.
   Fig 3: Removing Countershaft Bearing Shim

   Courtesy of GENERAL MOTORS CORP.
5. Remove the mainshaft front bearing race using the J 44736  (1) and the J 44733  (2). See Special Tools .
   Fig 4: Removing Mainshaft Front Bearing Race

   Courtesy of GENERAL MOTORS CORP.
   1. With the J 44736  (1) attached to the J 44733  (2), hit the forcing screw in order to bend the input gear oil deflector. See Special Tools . This allows the J 44733  (2) to fit under the bearing race. See Special Tools .
   2. Expand the J 44733  (2) to fit securely under the bearing race. See Special Tools .
   3. Align the legs of the J 44736  to rest on the webbing of the case. See Special Tools .
   4. Remove the input shaft bearing race.
6. Remove the input gear oil deflector and discard.
   Fig 5: Removing Input Gear Oil Deflector

   Courtesy of GENERAL MOTORS CORP.
7. Remove the input shaft bearing shims and discard.
8. Remove the oil trough.
   Fig 6: Removing Oil Trough

   Courtesy of GENERAL MOTORS CORP.
9. Remove the input shaft seal and discard.
   Fig 7: Removing Input Shaft Seal

   Courtesy of GENERAL MOTORS CORP.
10. Remove the transmission vent if necessary.
    Fig 8: Removing Transmission Vent

    Courtesy of GENERAL MOTORS CORP.
11. Remove the power take-off (PTO) cover bolts.
    Fig 9: Removing PTO Cover

    Courtesy of GENERAL MOTORS CORP.
12. Remove the PTO cover.
13. Remove and discard the PTO cover gasket.