Usage:
Start By:
a. remove sprocket hubs
1. Drain the oil from the final drive cover.
2. Engage the brakes and remove locknut (1) with tool (A).
3. Install tool (B) on the end of the sprocket shaft (3). Install tool (C) and fasten a hoist.
4. Remove twenty bolts (2) (not shown) that hold the cover to the steering clutch case.
5. Install two 3/8 " - 16 NC forcing screws (4). Tighten the forcing screws evenly and remove the sprocket shaft, gear and cover as a unit. Use bar (5) inside of tool (B) to keep the unit in balance when it is removed. The weight is 1068 kg (235 lb)
6. Remove sprocket shaft (6) and gear from cover (7) with tooling (D) and a press.
7. Remove cover (7) from the press. The weight is 56 kg (125 lb). Remove sprocket shaft (6) and gear from the press. The weight is 52 kg (115 lb)
8. Remove retainer (8) and bearing cone (9) from the cover.
9. Remove O-ring seal (10) from retainer (8).
10. If a replacement is needed, remove bearing cup (11), spacer (12) and bearing cup (13) from the cover.
NOTE: Do not remove race and roller assembly (14) unless a replacement is needed. The bearing can be damaged when removed.
11. Remove race and roller assembly (14) from the cover with tool (E).
12. Remove spacer (15) from the sprocket shaft (6).
13. Remove nuts and bolts that hold the sprocket shaft and gear together. Remove gear (17).
14. Remove bearing cone (18) from the sprocket shaft with tooling (F).
15. If a replacement is needed, remove bearing race (19) from the sprocket shaft.
16. Remove bearing cage (20) from the steering clutch case.
NOTE: Do not remove race and roller assembly (21) unless a replacement is needed. The bearing can be damaged when removed.
17. Remove race and roller assembly (21) from bearing cage (20).
Install Sprocket Shaft, Gear & Cover, As A Unit
1. Install race and roller assembly (21) in bearing cage (20) with tooling (G) and a press.
2. Install bearing cage (20) on the steering clutch case.
3. If bearing race (19) was removed, heat bearing race (19) to a maximum temperature of 135° C (275° F). Install bearing race (19) on the sprocket shaft. If necessary, use tooling (H) to install the bearing race.
4. Install bearing cone (18) on sprocket shaft (6) with tooling (I). Use a force of 98 to 240 kN (11 to 27 ton).
5. Install gear (17) on sprocket shaft (6). Install the bolts and nuts that hold the gear and sprocket shaft together. Tighten the nuts to a torque of 80 ± 7 N·m (60 ± 5 lb ft). Turn the nuts an additional 120° ± 5°. Minimum torque must be 307 N·m (230 lb ft)
6. Lower the temperature of bearing cups (13) and (11). Install bearing cup (13), spacer (12) and bearing cup (11) in the cover.
7. If the race and roller assembly was removed, install the race and roller in the cover with tooling (G) and a press.
8. Put sprocket shaft (6) and gear on wooden block. Put cover (7) in position on the sprocket shaft and gear.
9. Install spacer (15) on the sprocket shaft.
10. Put bearing cone (9) in position on the sprocket shaft.
11. Use tooling (I) as shown and install bearing cone (9) on the sprocket shaft with a force of 178 to 240 kN (20 to 27 ton). Turn the cover to put the bearing cones on their seats in the bearing cups.
12. Inspect O-ring seal (10) for damage and make a replacement if needed. Install O-ring seal (10) on retainer (8).
13. Put retainer (8) in position on the cover.
14. Install bolts (22) and tooling (J). Install 5P6514 Adapter (23) [part of tooling (I)] on the end of the sprocket shaft.
15. Fasten a hoist to tooling (J). Put 6V6440 Liquid Gasket Material on the cover and the steering clutch case that makes contact with each other. Install bar (5) in the 5P6514 Adapter to put the sprocket shaft, gear and cover in balance. Install the unit on the steering clutch case. Apply 9S3263 Thread-Lock to the threads of bolts (1) (not shown) that hold the cover to the steering clutch case. Tighten the bolts to a torque of 135 ± 150 N*m (100 ± 11 lb ft).
16. Put oil on the threads and friction material of locknut (1). If oil is not used, the friction material will be destroyed when it is put on the threads of the sprocket shaft.
17. Install locknut (1) and turn it in to the sprocket shaft begin to show beyond the friction material of the locknut.
NOTE: The torque needed to turn the locknut is with clean threads, with oil and all friction material engaged on sprocket shaft threads, but locknut not in contact with bearing.
18. Use tooling (K) and check the torque needed to turn locknut (1). If the same locknut is used again, it must take at least 55 N*m (40 lb ft) to turn the locknut. If not, use a new locknut with oil on the threads and friction material of locknut. A new locknut must take at least 80 N*m (60 lb ft) to turn it.
19. Use tooling (L) and tighten locknut (1) to a torque of 815 ± 65 N*m (603 ± 37 lb ft).
20. Fill the finale drive with oil after sprocket hub is installed. See the Operation And Maintenance Manual.
End By:
a. install sprocket hubs