Special Tools

J 42162  Getrag Axle Side Gear Compressor

Fig 1: Identifying Ring Gear, Bolts, and Differential Carrier
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1. Using a punch and a hammer, through a bolt hole, remove the ring gear bolts (1) and the ring gear (3) from the differential carrier (2).
Fig 2: View of Differential Carrier
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2. Insert a screwdriver (2) in the differential carrier slot (1).
3. Using the screwdriver (1), separate the differential carrier (3).
Fig 3: Identifying Axle Side Gear, Clutch Pack & Right Case Half
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: Friction discs and separator plates develop specific wear patterns. During disc and plate removal, keep the components in the order in which they were removed.
4. Remove the axle side gear (107) and the clutch pack (110) from the differential carrier half (105).
Fig 4: Identifying Clutch Pack & Pressure Plate
Courtesy of GENERAL MOTORS CORP.
5. Remove the clutch pack and axle gear from the right half. Note the thick pressure plate (109) side that has friction material faces away from the gear teeth.
Fig 5: Identifying Beveled Washer
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6. Remove the beveled washer from the axle side gear. Note that the orientation of the beveled washer (108) faces out.
Fig 6: Identifying Clutch Pack
Courtesy of GENERAL MOTORS CORP.
7. Mark the clutch pack (110) to indicate the position of the components.
Fig 7: View of J 42162 and Differential Pinion Gear Shaft
Courtesy of GENERAL MOTORS CORP.
8. Using the J 42162  and a press as shown, apply light pressure so the differential pinion gear shaft can be removed.
Fig 8: Identifying Differential Shaft
Courtesy of GENERAL MOTORS CORP.
9. Remove the differential pinion gear shaft (103). Release pressure from the press.
Fig 9: Identifying Pinion Gears & Washers
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10. Remove the pinion gears (111) and washers (112).
Fig 10: Identifying Clutch Pack & Pressure Plate
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11. Remove the clutch pack and axle gear from the left half. Note the thick pressure plate (109) side that has friction material faces away from the gear teeth.
Fig 11: Identifying Beveled Washer
Courtesy of GENERAL MOTORS CORP.
12. Remove the beveled washer from the axle side gear. Note that the orientation of the beveled washer (108) faces out.
Fig 12: Identifying Clutch Pack
Courtesy of GENERAL MOTORS CORP.
13. Mark the clutch pack (110) to indicate the position of the components.