GMC 1990 Light Truck Repair Manual page 319

1. Shaft
2. Deflector
3. Seal
4. Bearing
5. Tube
6. Bolt
8. Retaining Ring
18. Bolt
19. Lock Tab
25. Plug
26. Washer
27. Pin
28. Bolt
29. Carrier Case
30. Bearing
DISASSEMBLY
|«¥»| Disassemble (Figures 1 through 14)
Tools Required:
J 8614-01 Pinion Flange Remover
J 21551 Bearing Remover
J 22912-01 Pinion Bearing Cone Remover
J 29307 Slide Hammer
J 33791 Bushing Remover
J 33792 Side Bearing Adjuster Wrench
J 33837 Pinion Bearing Cup Remover Kit
J 29369-2 Countershaft Roller Bearing Remover
1. Shaft (1) with deflector (2) and retaining ring (8).
• Strike the inside of the shaft flange with a
brass hammer to dislodge the shaft. Use care
in pulling the splined shaft through the seal
diameter to avoid cutting the seal.
2. Bolts (6).
3. Tube (5).
4. Right seal (3) and bearing (4), using J 29369-2
and J 29307 (figure 3).
5. Shaft (59), and deflector (2).
• Pry with a screwdriver between the shaft
flange and carrier head while striking the
flange with a soft face hammer (figure 4).
6. Bolts (58) and cover (57).
7. Left seal (3).
8. Bolts (28).
9. Separate the carrier case (29).
• Insert a screwdriver into the slots provided and
pry to separate the case (figure 5).
10. Differential case (35).
11. Bolts (18) and lock tabs (19) from the side bearing
adjuster sleeves (32) (figure 6).
12. Bearing cups (33) and sleeves (32) from the case.
• Turn the sleeves (32) using J 33792 until the
cups are pushed out of the case (figure 7).
13. Bearing (30) from the sleeve (32). Use J 21551
(figure 8).
,14. Pinion flange nut (46) and washer (45) using
J 8614-01 (figure 9).
• Mount the left carrier case half in J 33837-1
(figure 10).
31. Insert
32. Sleeve
33. Side Bearing
34. Bolt
35. Differential Case
36. Bolt
37. Ring and Pinion
Gears
38. Shim
39. Bearing
40. Spacer
41. Bearing
42. Seal
43. Deflector
44. Flange
Figure 2—L-Van Front Axle
15. Flange (44) and deflector (43) using J 33837-1 and
J 33837-3 (figure 10).
16. Pinion (37), with spacer (40), pinion bearing (39)
and shim (38).
17. Spacer (40) from the pinion.
18. Bearing (39) from the pinion. Use J 22912-01 and
a press (figure 11).
19. Shim (38).
20. Bearing and cup (41) and seal (42), using J 33837-
1, J 33837-3 and J 33837-6.
• Insert J 33837-6 into the pinion bore.
• Thread the forcing screw (J 33837-3) into
• Turn the forcing screw to pull the parts from
21. Inner bearing cup by pushing it out using J 33837-
1, J 33837-3 and J 33837-6 (figure 12).
22. Bolt (36) and shaft (52) from the differential case
(35).
23. Differential pinion gears (56) and thrust washers
(55).
24. Side gears (54) and thrust washers (53).
• Mark the side gears and case so they can be
25. Bolts (34).
26. Ring gear (37).
• Do not pry between the ring gear and the
27. Side bearings (33), using J 22912-01 (31) (figure
13).
28. Bushings (48). Use J 33791 (figure 14).
Do not steam clean drive parts having ground and
polished surfaces such as gears, bearings, and shafts.
These parts should be cleaned in a suitable solvent. All
parts should be disassembled before cleaning.
L-VAN FRONT AXLE 4C5-3
45. Washer
46. Nut
47. Plug
48. Bushing
49. Vent Hose
50. Vent
51. Fitting
52. Shaft
53. Thrust Washer
54. Side Gear
55. Thrust Washer
56. Differential Pinion
Gear
57. Cover
J 33837-6.
the case.
installed in their original location.
case. Drive the gear off with a brass drift and
hammer.
CLEANING AND
INSPECTION
CLEANING
58. Bolt
59. Shaft
F7476