GMC 1990 Light Truck Repair Manual page 219

1
. Bolt
2
. Washer
3. Hub Cap
4. Gasket
5. Axle Shaft
6
. A djusting Nut
7. Lock Ring
8
. Thrust Washer
9. Wheel Hub
10
. Thrust Spacer
11
. Bearing
12
. Retaining Ring
13. Rotor
14. Bearing
15. Hub Oil Seal
16. Deflector
17. Bolt
18. Brake Caliper Bracket
19. Bolt
20
. Axle Housing
21
. Bracket
• Loosen the jam nut (49) and back off the thrust
block adjusting screw (48) (figure 4).
• Center punch one differential carrier leg and
bearing cap to identify the cap for reassembly
(figure 5).
4. Bearing cap bolts (23).
5. Bearing caps (25) (figure
6
. Adjusting nuts (32).
7. Differential and gear assembly (36) from the carrier
(figure 7).
• Scribe a mark across the differential case halves.
Figure 3—Carrier in the Repair Stand
12-INCH RING GEAR (ROCKWELL) 4B6-3
22
. Axle Vent
23. Bolt
24. Washer
25. Bearing Cap
26. Nut
27. Washer
28. Bracket
29. Plug
30. Gasket
31. Pin
32. A djusting Nut
33. Bearing
34. Nut
35. Washer
36. Differential Case
37. Pinion and Ring Gear Set
38. Side Gear Thrust Washer
39. Ring Gear Bolt
40. Pinion Spider
41. Pinion Gears
42. Pinion Thrust Washers
2
Figure —Rear Axle Components
6
).
43. Side Gears
44. Bolt
45. Washer
46. Carrier
47. Bolt
48. Thrust Block Screw
49. Nut
50. Pinion Depth Shims
51. Retaining Ring
52. Bearing
53. Bearing
54. Pinion Cage
55. Washer
56. Bolt
57. Bearing
58. Pinion Oil Seal
59. D eflector
60. Pinion Flange
61. Washer
62. Nut
63. Backing Plate
8
. Differential case bolts (44).
9. The top case half (36) (figure
10. Side gears (43) and thrust washers (38) (figure 9).
11. Pinion gears (41) and thrust washers (42).
12. Differential pinion spider (40).
13. Ring gear nuts (34), washers (35), and bolts (39).
14. Ring gear (37) from the differential case.
15. Differential side bearings (33) using J 22912 and an
10
arbor press (figure ).
• Mark the bearings as left and right.
Figure 4 — Loosening the Thrust Adjusting Screw
F-04734
8
).