D6D TRACTOR POWER TRAIN – Steering Clutches

Remove And Install Steering Clutches

Start By:

a. remove brake hydraulic controls and actuating mechanisms

1. Drain the oil from the steering clutch case.

2. Remove plug (1).


NOTICE

Remove all bolts (2) and (3) except for one on each side of the steering clutch. It is necessary to turn the sprocket or track to remove the bolts.


3. Remove bolts (2) that hold the steering clutch to the steering clutch hub. Remove bolts (3) through the opening in the steering clutch case where the plug was removed.

4. Install two 3/8″-16 NC bolts 4 in. long in the brake bands as shown. Fasten a hoist to the brake bands and remove the last two bolts that hold the steering clutch in position. Remove steering clutch (4) from the machine. The weight of the steering clutch is 113 kg (250 lb).

NOTE: The following steps are for the installation of the steering clutches.

5. Fasten a hoist to the brake bands as shown.

6. Put the steering clutch (4) in position between the steering clutch hub and the flange. Install two bolts to hold the clutch in position. Remove the hoist.

7. Put 9M3710 Anti-Seize Compound on the threads of all the bolts. Install the bolts that hold the steering clutch in position. Tighten the bolts to a torque of 270 ± 25 N·m (200 ± 20 lb.ft.). Install the plug in the steering clutch case.

8. After the brake hydraulic control and actuating mechanism is installed, fill the bevel gear case and steering clutch case with oil to the correct level. See Lubrication and Maintenance Manual.

End By:

a. install brake hydraulic controls and actuating mechanisms


NOTICE

Perform Scheduled Oil Sampling on oil wetted compartments after performing service work to check for contaminants left in the system following repair. Contaminants put into the system may cause rapid wear and shortened component life.


Disassemble And Assemble Steering Clutches

Start By:

a. remove steering clutches


NOTICE

Keep all parts clean from contaminants. Contaminants put into the system may cause rapid wear and shortened component life.


1. Remove brake bands (1).

2. Install two 5/8″-11 NC forged eyebolts in the drum. Fasten a hoist to the drum. Weight of the drum is 23 kg (50 lb). Remove drum (2).

3. Put tool (B) on tool (A). Fasten a hoist to the steering clutch. Weight of the steering clutch is 90 kg (200 lb). Put the steering clutch on tool (A). Install tooling (C) and the nut. Put pressure on the steering clutch with tool (A). Remove bolts (3) and locks (4).

------ WARNING! ------

Release the pressure on the steering clutch slowly. The plate is under spring tension.

--------WARNING!------

4. Remove tool (C) and the nut.

5. Remove plate (5).

6. Remove the eight disc assemblies (6) and eight discs (7).

NOTE: Put identification on the discs and the disc assemblies during removal. This will prevent wear on the discs and the disc assemblies and prevent a mix at assembly.

7. Remove drum (8) from the steering clutch.

8. Remove eight springs (9).

9. Remove inner springs (10).

10. Remove eight sleeves (11).

NOTE: The following steps are for the assembly of the steering clutches.

11. Put tool (B) on tool (A). Put retainer (2) in position on the steering clutch stand.


NOTICE

Check all of the springs of the steering clutch for the correct spring tension. See the SPECIFICATIONS for the correct spring tension.


12. Put the eight sleeves in the retainer. Put the inner springs in position on the sleeves. Install the outer springs over the inner springs.

13. Position drum (8) over the springs.

14. Check the discs and disc assemblies for wear. If the parts are worn, use new parts for replacement. The thickness of a new set of steering clutch discs and disc assemblies is 51.10 mm (2.012 in.) to 56.44 mm (2.222 in.). The minimum thickness for a used steering clutch unit is 45.7 mm (1.800 in.).

15. Install discs (7) and disc assemblies (6) in the correct sequence.

NOTE: For better wear distribution, the discs and disc assemblies must be installed so discs and disc assemblies that were on top of the steering clutch unit are now on the bottom.

16. Put plate (5) on the steering clutch unit. Install tooling (C) and the nut on the steering clutch. Make sure the holes in the plate are in alignment with the sleeves.

17. Put pressure on the steering clutch with tool (A). Install the eight bolts and four locks.

18. Tighten bolts (3). Bend the locks up on the bolts.

19. Release the pressure on the steering clutch. Remove tooling (C). Remove the steering clutch from tool (A).

20. Fasten a hoist to the drum. Put the drum in position over the steering clutch. Remove the hoist.

21. Put the brake bands in position on the drum.

End By:

a. install steering clutches


NOTICE

Perform Scheduled Oil Sampling on oil wetted compartments after performing service work to check for contaminants left in the system following repair. Contaminants put into the system may cause rapid wear and shortened component life.


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