Main Shaft Disassemble (Gen 2)

Special Tools 

69604356  Gear Pullers

For equivalent regional tools, refer to Special Tools .

Fig 1: 1st Gear Thrust Washer & Removal Tools
Courtesy of GENERAL MOTORS COMPANY
1. Remove the 1st gear thrust washer (1) and the 1st gear (2) using 69604356  pullers and a hydraulic press.
Fig 2: 1st Gear Bearing Assembly & 1st/2nd Gear Components
Courtesy of GENERAL MOTORS COMPANY
2. Remove the following components:
   • 1st gear bearing assembly (1)
   • 1st/2nd gear inner blocking ring (2)
   • 1st/2nd gear intermediate cone ring (3)
   • 1st/2nd gear outer blocking ring (4)
Fig 3: 1st/2nd Gear Synchronizer Assembly Retaining Ring
Courtesy of GENERAL MOTORS COMPANY
3. Remove and discard the 1st/2nd gear synchronizer assembly retaining ring (1).
Fig 4: 1st/2nd Gear Synchronizer Assembly, 2nd Gear Assembly & Removal Tools
Courtesy of GENERAL MOTORS COMPANY
4. Remove the 1st/2nd gear synchronizer assembly (1) and 2nd gear assembly (2) as a unit using 69604356  pullers and a hydraulic press.
Fig 5: 1st/2nd Gear Components
Courtesy of GENERAL MOTORS COMPANY
5. Separate the following components:
   • 1st/2nd gear synchronizer assembly (1)
   • 1st/2nd gear outer blocking ring (2)
   • 1st/2nd gear intermediate cone ring (3)
   • 1st/2nd gear inner blocking ring (4)
   • 2nd gear assembly (5)
Fig 6: 2nd & 3rd Gear Components
Courtesy of GENERAL MOTORS COMPANY
6. Remove the following components:
   • 2nd gear bearing assembly (1)
   • 3rd gear thrust washer retaining ring (2)
   • 3rd gear thrust washer (3)
   • 3rd gear assembly (4)
   • 3rd gear bearing assembly (5)
   • 3rd gear inner blocking ring (6)
   • 3rd gear intermediate blocking ring (7)
   • 3rd gear outer blocking ring (8)
Fig 7: 3rd/4th Gear Synchronizer Assembly Retaining Ring & Thrust Washer
Courtesy of GENERAL MOTORS COMPANY
7. Remove and discard the 3rd/4th gear synchronizer assembly retaining ring (1) and the 3rd/4th gear synchronizer assembly thrust washer (2).
Fig 8: 3rd/4th Gear Synchronizer Assembly, 4th Gear Assembly & Removal Tools
Courtesy of GENERAL MOTORS COMPANY
8. Remove the 3rd/4th gear synchronizer assembly (1) and the 4th gear assembly (2) as a unit using 69604356  pullers and a hydraulic press.
Fig 9: 3rd & 4th Gear Components
Courtesy of GENERAL MOTORS COMPANY
9. Separate the following components:
   • 3rd/4th gear synchronizer assembly (1)
   • 4th gear outer blocking ring (2)
   • 4th gear intermediate blocking ring (3)
   • 4th gear inner blocking ring (4)
   • 4th gear assembly (5)
Fig 10: 4th Gear Bearing Assembly
Courtesy of GENERAL MOTORS COMPANY
10. Remove the 4th gear bearing assembly (1).