3rd Clutch Shaft Disassemble

Tools Required

• J 22912-B  Rear Pinion and Axle Bearing Remover
• SA9179NE  Dial Indicator

Fig 1: Measuring The 3rd Drive Gear Axial Clearance Using SA91979NE
Courtesy of GENERAL MOTORS CORP.
1. Position the 3rd clutch shaft assembly in a soft-jaw vise with the 3rd driven gear on top.
2. Using SA9179NE  measure the 3rd drive gear (803) axial clearance.
   1. Position SA9179NE  gage pointer on the top of the gear teeth.
   2. Zero the gage.
   3. Lift up on the gear to measure the clearance.
   4. Measure the axial clearance in 3 different locations by rotating the 3rd drive gear.
   5. Average the 3 measurements for the axial clearance.
   6. Record the clearance to help determine the correct replacement 3rd drive gear thrust bearing race (800).

      Specification:  The 3rd gear axial clearance is 0.005-0.045 mm (0.0002-0.0012 in)

3. If the clearance exceeds the maximum, during disassembly, inspect the following bearings for wear on the bearing thrust surfaces:
   • 3rd drive gear (803)
   • 3rd drive gear thrust bearing race (800)
   • 3rd drive gear thrust bearing (801)
   • 3rd driven gear (805)
4. If the clearance is lower than the specifications inspect for burrs or contamination of debris between the bearing thrust surfaces.
Fig 2: 3rd Clutch Shaft Assembly & Components Removed
Courtesy of GENERAL MOTORS CORP.
5. Remove the following components from the 3rd clutch shaft assembly:
   • 3rd clutch shaft assembly washer (809)
   • 3rd drive gear retaining ring cap retainer (808)
   • 3rd driven gear retaining ring cap (807)
   • 3rd driven gear split retaining ring (806)
Fig 3: Removing 3rd Driven Gear Using A Hydraulic Press & J 22912-01
Courtesy of GENERAL MOTORS CORP.
NOTE: Support the component while using the press. Failure to support the component may allow the component to drop, causing damage.
6. Using a hydraulic press and J 22912-B  , remove the 3rd driven gear (805).
   • Protect the threads of the 3rd clutch shaft (823) using a shaft protector.
   • Hold onto the 3rd clutch shaft (823) assembly to prevent the shaft from dropping to the floor.
Fig 4: 3rd Gear Shaft & Components Removed
Courtesy of GENERAL MOTORS CORP.
7. Remove the following components from the 3rd gear shaft (823):
   • 3rd driven gear thrust bearing (801)
   • 3rd drive gear (803)
   • 3rd drive gear inner bearing (802)
   • 3rd drive gear thrust bearing (801)
   • 3rd drive gear bearing race (800)
   • 3rd clutch housing assembly (831)
   • 3rd clutch housing fluid passage O-ring seals (822)
   • 3rd clutch shaft fluid passage seals (824)
Fig 5: Inspecting The Gears & Bearings For Damage
Courtesy of GENERAL MOTORS CORP.
8. Clean the 3rd clutch shaft, gears, and bearings in clean cleaning solvent and dry with compressed air.
9. Use compressed air to clean the oil passages in the 3rd clutch shaft (823).
10. Inspect the gears and bearings for excessive wear or damage.
11. Replace any gears or bearings that are faulty.