Ring Gear and Differential Housing Disassemble

Tools Required

• J 42159  Differential Side Bearing Remover. See Special Tools and Equipment .
• J 42162  Side Gear Compressor. See Special Tools and Equipment .
• J 42173  Differential Holding Fixture. See Special Tools and Equipment .

Fig 1: Differential Case Assembly & J 42173
Courtesy of GENERAL MOTORS CORP.
1. Position the differential case assembly onto the J 42173  . See Special Tools and Equipment .
Fig 2: Ring Gear & Ring Gear Bolts
Courtesy of GENERAL MOTORS CORP.
2. Remove the ring gear bolts (2) and ring gear (1).
3. Discard the ring gear bolts (2).
Fig 3: Install J 42159 Onto Right Side Bearing
Courtesy of GENERAL MOTORS CORP.
4. Install the J 42159  onto the right differential side bearing. See Special Tools and Equipment .
5. Using the J 42159  , J 42162  , and a hydraulic press, remove the right side bearing from the differential. See Special Tools and Equipment .
Fig 4: Differential Case Bolts & Case Halves, Right & Left
Courtesy of GENERAL MOTORS CORP.
6. Remove the differential case bolts.
7. Separate the case halves, right and left.
Fig 5: Left Case, Left Output Shaft & Gear
Courtesy of GENERAL MOTORS CORP.
8. Remove the left output shaft and gear from the left case.
Fig 6: Friction Discs & Separator Plates
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: Friction discs and separator plates develop specific wear patterns. During disc and plate removal, the components must be retained in the specific order in which they were removed.
9. Remove the left clutch pack from the left case.
   • Remove the separator plates (1).
   • Remove the friction discs (2).
   • Remove the friction disc - thick (3).
   • Remove the bellville washer (4).
10. Tag the clutch pack to indicate the position of the components.
Fig 7: Install J 42159 Onto Left Differential Side Bearing
Courtesy of GENERAL MOTORS CORP.
11. Install the J 42159  onto the left differential side bearing. See Special Tools and Equipment .
12. Using the J 42159  , J 42162  , and a hydraulic press, remove the left side bearing from the differential. See Special Tools and Equipment .
Fig 8: Left Output Shaft & C-Clip
Courtesy of GENERAL MOTORS CORP.
13. Remove the C-clip from the left output shaft.
Fig 9: Left Output Shaft & Gear
Courtesy of GENERAL MOTORS CORP.
14. Remove the gear from the left output shaft.
Fig 10: Right Differential Case, Bellville Washer & Clutch Pack
Courtesy of GENERAL MOTORS CORP.
15. Using the J 42162  and a hydraulic press, compress the bellville washer and clutch pack in order to remove the cross pin from the right differential case. See Special Tools and Equipment .
Fig 11: Right Side Gears, Side Gear Washers & Output Shaft & Gear & Right Differential Case
Courtesy of GENERAL MOTORS CORP.
16. Remove the right side gears (1), side gear washers (2), and output shaft and gear (3) from the right differential case.
Fig 12: Friction Discs, Separator Plates & Bellville Washer
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: Friction discs and separator plates develop specific wear patterns. During disc and plate removal, the components must be retained in the specific order in which they were removed.
17. Remove the right clutch pack from the right case.
    • Remove the bellville washer (1).
    • Remove the friction disc - thick (2).
    • Remove the friction discs (3).
    • Remove the separator plates (4).
18. Tag the clutch pack to indicate the position of the components.