Usage:
Steering Clutches (Power Shift)
Remove Steering Clutches
start by:
a) remove steering clutch controls
1. Remove the oil from the bevel gear case.
2. Remove bolts (1) and remove plate (2).
3. Remove the bolts (3) that hold the brake drums to the final drive pinion flanges (fourteen bolts in each flange). Move the brake drums toward the bevel gear.
NOTE: Turn the tracks for removal of all the bolts.
4. Remove the bolts and locks (6). Use tool (A) to loosen the nuts (7).
5. Remove bolts (4) and remove caps (5).
6. Install tooling (B) on the steering clutch yokes. Fasten a hoist to tooling (B) and remove the steering clutch assembly. The weight of the steering clutch assembly (8) is 400 lb. (180 kg).
Install Steering Clutches
1. Install tooling (B) on the steering clutch yokes. Fasten a hoist to tooling (B). Put the steering clutch assembly (1) in position in the steering clutch case.
| NOTICE |
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Make sure the balls on the ends of the two yokes are in position in the sockets of the steering clutch case. Make sure the notch in each bearing cage is in an "UP" position. |
2. Put the two caps (2) in position.
| NOTICE |
|---|
Make sure dowels in the caps are in the notches of the bearing cages before bolts are tightened. |
3. Install the four bolts that hold the caps in position.
4. Make an adjustment to the bevel gear bearing preload with tool (A). See BEVEL GEAR AND PINION SETTINGS.
5. Make adjustments to the gear tooth contact setting and gear clearance (backlash). See BEVEL GEAR AND PINION SETTING.
6. Install the bolts and locks (3).
7. Install the bolts (4) that hold the brake drums to the final drive pinion flanges.
8. Install the plate (5) and tighten the bolts to a torque of 85 ± 10 lb.ft. (115 ± 7 N·m).
9. Fill the bevel gear case with oil to the correct level. See LUBRICATION AND MAINTENANCE GUIDE.
end by:
a) install steering clutch controls
Disassemble Steering Clutches
start by:
a) remove steering clutches
1. Remove two bolts (1) and remove lock (2).
2. Install two 1/2" × 13 NC bolts (3) 21/2" long in the drum as shown. Put a bar in position on the bolts as shown. Loosen the nut to a distance of .25" (6.4 mm) from the face of the drum.
3. Remove the brake band and drum (4).
NOTE: Measure the total thickness of the discs and disc assemblies of the clutch assembly. The minimum thickness is 2.90 in. (73.7 mm). If the thickness is less than 2.90 in. (73.7 mm), install new discs and disc assemblies.
4. Install tooling (A) and loosen plate assembly (5). Remove tooling (A). Remove the nut and remove the plate assembly. The weight of the plate assembly is 110 lb. (49.5 kg).
5. Install tooling (B) on the plate assembly as shown. Put pressure on springs and remove locks (6). Release pressure and remove tooling (B).
6. Remove a retainer (7) and two springs (8) from each of the eight studs.
7. Remove the drum and disc assemblies (9). The weight of the drum and disc assemblies is 60 lb. (27 kg).
NOTE: Put identification on the discs so that they will not be mixed at assembly. If the same discs are used at assembly, install them in the drum in the same sequence to prevent fast wear. The discs will wear better if they are moved from the top to the bottom of the clutch assembly with the same faces up. New discs can be installed with any face up.
8. Remove fifteen disc assemblies (11) and fourteen discs (10) from the drum (12).
9. Remove two screws (13) from nut (14). Use tool (C) to remove nut.
10. Use tooling (D) to remove the plate assembly (15) from the bearing.
11. Remove bolts and locks (16). Remove the yoke (17) from the cage (18).
12. Remove the bearing from the cage with tool (E) and a press.
13. Put the plate assembly on the bevel gear shaft. Check the clearance between the shaft and the bushing (19) in the plate assembly. The clearance must not be more than .020 in. (0.5 mm). If the clearance is more, install a new bushing.
14. If necessary because of wear or damage, remove studs (20).
15. Follow the procedure in Steps 1 through 15 for the opposite steering clutch.
Assemble Steering Clutches
1. If needed, install new bushing (1) and studs (2).
2. Install the bearing in cage (3) with tool (A) and a press. Install the retainer ring.
3. Put the cage (3) in position in yoke (4) and install the bolts and locks (5) that hold it.
4. Install the plate assembly (6) in the cage.
5. Install the nut (7) and tighten to a torque of 350 ± 50 lb.ft. (470 ± 70 N·m) with tooling (B).
6. Drill two 13/64 in. (5.16 mm) holes .38 in. (9.7 mm) deep opposite each other on the separation line of the nut and plate assembly.
NOTE: Keep bearing free of foreign material.
7. Use a 1/4"-20-3B NC thread tap to tap both holes .31 in. (7.9 mm) deep. Install two screws (8).
8. Install the discs (9) and disc assemblies (10) on the drum (11). Make sure discs are installed in the correct sequence.
9. Install the drum and disc assembly on the plate assembly.
10. Put the two springs (12) and the retainers (13) on each of the studs of the plate assembly.
11. Install tooling (C). Put pressure on springs and retainers until locks (14) can be installed on studs.
| NOTICE |
|---|
Put pressure on springs and retainers slowly to prevent damage to plate (7S8431) in tooling (C). Hit each stud with a hammer to make sure the locks are in the correct position on the studs. |
12. Clean the end of the bevel gear shaft. Fasten a hoist to the clutch assembly (15) and put in position on the bevel gear shaft. The weight of the clutch assembly is 110 lb. (49.5 kg).
13. Install tooling (D). Install the clutch assembly on the bevel gear shaft with a force of 15-20 ton (135-180 kN).
14. Remove tooling (D). Measure dimension (Y). Dimension (Y) must be .27 ± .03 in. (6.86 ± 0.76 mm).
15. Install the drum (17) on the clutch assembly. Install the brake band (16) on the drum.
16. Install the nut on the end of the bevel gear shaft. Install two 1/2"-13 NC bolts three inches long in the drum. Put a bar between the bolts. Tighten the nut to a torque of 225 ± 25 lb.ft. (300 ± 35 N·m).
17. Install the lock and two bolts.
18. Follow the procedure in Steps 1 through 17 for the opposite steering clutch.
end by:
a) install steering clutches