Usage:
Start By:
a. remove rear tires and rims
b. remove rear axle shafts
NOTE: The photographs that follow are typical examples.
1. Gear (2) weighs approximately 45 kg (100 lb). Use two persons, and remove gear (2) from the final drive.
2. Use three straps as shown to hold shafts (4) in place so they will not slide out of carrier (1).
3. Attach a hoist to tooling (A), and fasten it to carrier (1). Remove bolts (3) and carrier (1) from the wheel.
4. Remove shafts (4), the planet gears, thrust washers, bearings, and spacer from carrier (1).
5. Attach a hoist to tool (C), and fasten it to inner carrier (5). Remove inner carrier (5). The weight of the inner carrier is 180 kg (397 lb).
6. Remove the sun gear and thrust washer from inner carrier (5).
7. Remove the shafts, planet gears, thrust washers, bearings and spacers from the inner carrier.
8. Remove bearing (6) from retainer (7).
 |
To prevent possible personal injury, make sure the wheel is supported before retainer (7) is removed. |
 |
9. Put a suitable support under the wheel so it will not slide off the axle housing when retainer (7) is removed.
10. Attach a joist to tool (C), and fasten it to the ring gear and hub assembly.
11. Remove retainer (7) and the shims behind it.
12. Remove the ring gear and hub assembly from the wheel and axle housing. The weight of the ring gear and hub is 343 kg (756 lb).
13. Remove retainers (8), and remove hub (9) from the ring gears. Remove the ring, and separate the two ring gears. The weight of the hub is 63 kg (139 lb). The weight of the inner gear is 170 kg (375 lb). The weight of the outer gear is 140 kg (309 lb).
14. Fasten a hoist and tool (B) to the wheel, and remove the support from under it.
15. Remove the outer wheel bearing.
16. Remove the wheel from the axle housing. The weight of the wheel is 1255 kg (2767 lb).
17. Remove the Duo-Cone seals and retainer from the wheel.
18. Remove the bearing cups from the wheel.
Typical Example
19. Remove bearing cone (12) from the axle housing.
20. Remove Duo-Cone seal (10) from the rear brake.
21. Remove seal retainer (11). Remove the Duo-Cone seal and the O-ring from the seal retainer.
22. Remove the Duo-Cone seal from behind seal retainer (11).
Install Final Drives, Rear Wheel Bearings & Duo-Cone Seals
NOTE: The following procedure is a typical example. For the recommended procedure to adjust the wheel bearings, refer to Service Magazine SEPD0722, "Vertical Wheel Bearing Adjustment Procedures For Cast Wheels and Fabricated Wheels."
1. Lower the temperature of bearing cups (2) and (3), and install the bearing cups in wheel (1). Use a hammer and punch to make sure the bearing cups are against the shoulder of the wheel assembly.
2. Put clean final drive oil on O-ring seal (5), and install the O-ring seal on seal retainer (4).
3. Put seal retainer (4) in position on wheel (1), and install the bolts that hold it.
| NOTICE |
|---|
See Installation Of Duo-Cone Floating Seals before installing any of the Duo-Cone Seals. |
4. Install Duo-Cone seal (6) with tool (A).
5. Install Duo-Cone seal (7) with tool (B).
6. Install Duo-Cone seal (8) with tool (A).
7. Put clean oil on O-ring seal (9), and put the O-ring seal in position as shown.
8. Install Duo-Cone seal (11) with tool (B)
9. Put clean oil on O-ring seal (10), and put it in position in seal retainer (12).
10. Put clean oil on the Duo-Cone seal, and slide seal retainer (12) into position on the axle housing.
11. Slide bearing cone (13) into position on the axle housing. Make sure it is against the seal retainer.
12. Put clean oil on the Duo-Cone seal. Use a hoist and tooling (D) to put wheel (1) and outer bearing cone (14) in position on the axle housing.
13. Put a suitable support under the wheel so it will not slide off the axle housing when the hoist is removed. Remove the hoist.
14. Put inner ring gear (16) in position in outer ring gear (15), and install the retaining ring that holds them.
15. Put hub (17) in position in inner ring gear (16), and install retainers (18) and the bolts to hold them. Tighten the bolts to a torque of 125 ± 8 N·m (90 ± 6 lb ft)
16. Put the hub and ring gear assembly in position on the axle housing with tool (C).
17. Put retainer (19) in position without any shims, and install three bolts (20) evenly spaced. Tighten the three bolts to a torque of 70 N·m (50 lb ft).
18. Remove tool (C) and the support under the wheel.
| NOTICE |
|---|
If it becomes necessary to charge the parking brake release circuit with an outside hydraulic source, do not use over 4150 kPa (600 psi). More than 4150 kPa (600 psi) can damage seals and other parts in the circuit. |
19. See the topic Towing in Systems Operation, Testing And Adjusting (Air System And Brakes), and release the brakes.
20. Tighten bolts (20) evenly again to a torque of 70 N·m (50 lb ft) while rotating the wheel.
21. Measure the thickness of hub retainer (19). Make a note of this thickness.
22. Use a depth micrometer as shown, and measure the distance from the surface of the hub retainer to the need of the axle housing. Do this in several places, and find the average distance. Make a note of this average distance.
23. Subtract the thickness of the hub retainer found in Step 21 from the average distance found in step 22. This is the distance between the axle housing and the hub retainer.
24. Add 0.10 mmm (.004 in) to the distance between the hub retainer and the axle housing found in Step 23. This is the thickness of shims (21) required to go between the hub retainer and the axle housing.
|
To prevent possible personal injury, make sure the wheel is support before the retainer is removed. |
|
25. Put a suitable support under the wheel assembly so it will not slide off the axle housing when the hub retainer is removed.
26. Remove the three bolts and hub retainer (19).
27. Put shims (21) and hub retainer (19) in position, and install the bolts that hold them. Tighten the bolts to a torque of 250 ± 25 N·m (184 ± 18 lb ft). Loosen every other bolt and tighten the bolts again to a torque of 250 ± 25 N·m (184 ± 18 lb ft) plus an additional 60 degrees ± 3 degrees. Loosen the remaining bolts and tighten the bolts again to a torque of 250 ± 25 N·m (184 ± 18 lb ft) plus an additional 60 degrees ± 3 degrees.
28. Put bearing (22) in position in hub retainer (19).
29. Assemble the inner carrier as follows:
a. Install ring (29) into the groove in gear (23).
b. Assemble bearing cups (30) and bearing cones (28) on gear (23).
c. Apply clean oil to bearing cones (28) and install the gear and bearing assemblies into carrier (5).
d. Install tooling (F) (1U5813 Fabricated Shaft and 1U5812 Fabricated Plate) and two bolts (26) in the gear assembly.
e. Tighten bolts (26) to a torque of 20 ± 2 N·m (15 ± 2 lb ft) and rotate gear (23).
f. Tighten bolts (26) again to a torque of 34 ± 3 N·m (25 ± 2 lb ft) and rotate gear (23).
g. Tighten bolts (26) again to a torque of 34 ± 3 N·m (25 ± 2 lb ft).
NOTE: Do not rotate gear (23) the third time.
h. Use a depth micrometer and measure the gap between 1U5812 Plate and 1U5813 Shaft (tooling (F). Record this dimension.
i. Remove the fabricated shaft and plate.
j. Measure the length (from the face of the shoulder to the end of the shaft) of 1U5813 Fabricated Shaft and of new shaft (13) that is to be installed. If the shafts have different lengths, the difference must be accounted for when installing shims and new shaft (13).
k. Using the 8X8412 Shaft, add 0.446 + 0.0 - 0.030 mm (.0170 + 0 - .0010 in) plus or minus the difference in the length between 1U5813 (Shaft Tooling F) and new shaft (13), to the dimension found in step h.
See the example:
Dimension from Step h is plus 0.446 mm (.0170 in) using 8X8412 Shaft = result.
l. Install shaft (13) through carrier (5) and bearings (28) with a press. Use a maximum force of 36 280 kg (80 000 lb).
m. Install the amount of shims found in Step k, plate (27) and bolts (26). Tighten the bolts to a torque of 135 ± 15 N·m (100 ± 11 lb ft).
n. If no gap exists between carrier (5) and plate (27), press shaft (13) farther into the bore until there is a slight gap.
o. After bolts (26) are tighten to a torque of 135 ± 15 N·m (100 ± 11 lb ft) and a gap exists, use a brass drift and drive plate (27) and shaft (13), toward carrier (5) until plate (27) contacts carrier (5).
p. Be sure that the gear (23) can be turned by hand.
30. Use a hoist and tool (C) to pick up inner carrier (5). Install thrust washer (37) and sun gear (36) in inner carrier (5).
|
Sun gear carrier (5) is free to fall. |
|
31. Install inner carrier (5) into ring gear (16).
32. Assemble the inner carrier as follows:
a. Install a retaining ring (39) on each of shafts (38).
b. Put a spacer (29) in the center of the bores of gears (25). Put bearing (24) in position on each side of spacers (29).
c. Put a thrust washer on each side of gears (25), and put them in position on each side of spacers (29).
d. Put shafts (38) in position, and install the plates and bolts that hold them. Tighten the bolts to a torque of 125 ± 8 N·m (90 ± 6 lb ft).
e. Put clean grease on the back of thrust washer (37), and put it in position on the dowels in inner carrier (23).
f. Put sun gear (36) in position against thrust washer (37).
33. Assemble the outer carrier as follows:
a. Install retaining ring (33) on each of shafts (34).
b. Put spacer (26) in the center of the bores of gears (30). Put bearing (31) in position on each side of spacers (26).
c. Put thrust washer (27) on each side of gears (30), and put them in position in outer carrier (32).
d. Put shafts (34) in position to hold the gears, bearings, thrust washers and spacers in position in the outer carrier.
34. Put inner carrier (23) in position on the axle housing with tool (C).
35. Install same washers on straps (40) to hold the shafts in outer carrier (32).
36. Put the O-ring seal and outer carrier (32) in position on the wheel with tool (E), and install the bolts that hold them.
37. Remove the washers on straps (40).
38. Put sun gear (35) in position as shown.
End By:
a. install rear tires and rims
b. install rear axle shafts