Usage:
Introduction
This Special Instruction gives the procedure for installation of the lift cylinders and the 8S and 8U Bulldozers with a single tilt cylinder.
NOTE: Each section contains the related parts list.
After the assembly is complete, prepare the machine for service as shown in the machine's Operation & Maintenance Manual.
Do not perform any procedure, outlined in this publication, or order any parts until you read and understand the information contained within.
Reference: Service Manual, Parts Manual and Operation & Maintenance Manual.
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Do not attempt to assemble this machine until you have read and understand the assembly instructions. Improper procedures could result in injury or death. |
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| NOTICE |
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Do not let any dirt or foreign material get into the hydraulic system during assembly or maintenance operation. Keep the oil in the hydraulic system at the correct level to prevent pump cavitation. |
Weights
| NOTICE |
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When a hoist is used to lift any part or assembly, stand clear of the area. Always make sure the hoist has the correct capacity. Approximate weights of the components are shown in the chart which follows. |
Shimming Procedure (Typical)
Typical Example
1. Remove all the shims from assembly (1).
2. Install assembly (1) and cap (2) on trunnion (3) without the shims. Tighten the bolts, maintaining equal distance on both sides of the cap.
3. Insert as many shims as possible into spaces (A) and (B) between the cap and the assembly.
4. Add two additional shims to the total shims used.
5. Install half the shims at (A) and the other half at (B). Tighten the bolts to the proper torque.
6. This allows the assembly to move on the trunnion freely and within the specified tolerance.
Installation of Lift Cylinders
Necessary Parts
NOTE: Clean all surfaces where parts are to be installed, including removal of paint from mating surfaces.
Installation Procedure
1. Lubricate seal (1) with multipurpose type grease. With the lips to the outside, install seal (1) in radiator guard housing.
2. Pack lift cylinder mounting bearing bores in radiator guard housing with multipurpose type grease.
NOTE: Remove cover (A) and bolts (B) to install pin (3). Install cover (A) and bolts (B) after pin (3) is installed.
3. Install yoke (2) in radiator guard housing. Lock yoke (2) in place with pin (3).
4. Install fitting (5) in radiator guard housing.
5. Pack cap assemblies (4) with multipurpose type grease.
6. Install cap assemblies (4) on trunnions of lift cylinder (7).
7. Mount lift cylinder (7) and cap assemblies (4) on yoke (2) with four bolts (6).
8. Install plate assembly (8) to plate (C) with two washers (9) and two bolts (10). Assemble mounting (11), two spacers (12), and bolt (13) to plate assembly (8) and radiator guard housing.
9. Repeat Steps 1 through 8 for the other side of the machine.
NOTE: Remove shipping covers from manifold on radiator guard housing and lift cylinders (7).
10. Connect hose assemblies (14) and (15) to cylinder group (7) using two seals (16), four flanges, eight washers, and eight bolts.
NOTE: The items not numbered are part of lift cylinder groups (7).
11. Connect hose assemblies (14) and (15) to manifold on radiator guard housing using two seals (17), four flanges, eight washers, and eight bolts.
NOTE: The items not numbered are part of the lift cylinder lines group that comes with the tractor.
12. Install bracket assembly (18) to cylinder group (7) with two washers and bolts from the tube assembly.
13. Install guard (19) to bracket assembly (18) with washer (20) and bolt (21).
14. Repeat Steps 10 through 13 for the other lift cylinder group.
Installation of Trunnions
Necessary Parts
Installation Procedure
Typical Example
Starting on one side:
1. Remove shipping cover (1) from the track roller frame.
Typical Example
2. Remove plug (3) and move plate (2) in towards the center of the tractor as far as possible. Install plug (3) back in the plate.
NOTE: Step 2 eliminates the hydraulic pressure that forms between seal plate (2) and pivot shaft retainer plate (A). This step also allows adequate clearance between trunnion assembly (4) and plate (2).
Typical Example
3. Install the guide pins (same thread size as bolts being installed, approximately 203 mm (8 in) in length) in the track roller frame.
Typical Example
4. Start trunnion assembly (4) on the guide pins.
Typical Example
5. Install trunnion assembly (4) with 16 washers (5) and bolts (6).
6. Tighten bolts (6) to a torque of 240 ± 40 N·m (180 ± 30 lb ft).
Repeat Steps 1 through 6 for other side of the machine.
Bulldozer Assembly (With Single Tilt)
Necessary Parts
Assembly Procedure
1. Raise and block the bulldozer blade in an upright position.
2. On each side, install connector assembly (1) to the blade with pin (2), retainer (3), and two bolts (4). Tighten bolts (4) to a torque of 700 ± 90 N·m (515 ± 65 lb ft).
3. On each side, install push arm (5) to the blade with pin (6), retainer (7), and two bolts (8). Tighten bolts (8) to a torque of 700 ± 90 N·m (515 ± 65 lb ft).
4. On the right side, install tilt cylinder group (11) to bulldozer blade with cap, shims, four bolts, and four nuts. Refer to the topic entitled Shimming Procedure in this Special Instruction for shimming instructions.
NOTE: The items not numbered are part of the tilt cylinder group.
5. Install the tilt cylinder group to the right hand push arm with pin (10), retainer (7), and two bolts (8). Tighten bolts (8) to a torque of 700 ± 90 N·m (515 ± 65 lb ft).
6. Install brace group (9) to bulldozer blade with cap, shims, four bolts, and four nuts. Refer to the topic entitled Shimming Procedure in this Special Instruction for shimming instructions.
NOTE: The items not numbered are part of the brace group.
NOTE: Adjust brace group to the neutral position (as shown in Step 8) before installation to push arm.
7. Install brace group to left hand push arm with pin (10), retainer (7), and two bolts (8). Tighten bolts (8) to a torque of 700 ± 90 N·m (515 ± 65 lb ft).
(A) 1235 mm (48.6 in)
8. Adjust brace group (9) to distance (A). This is the neutral position.
NOTE: Apply a heavy coating of multipurpose type grease to the threaded surfaces on brace group (9).
9. Install link group (12) to the blade assembly with cap, shims, four bolts, and four nuts. Refer to the topic entitled Shimming Procedure in this Special Instruction for shimming instructions.
NOTE: The items not numbered are part of the link group.
10. Install tube assembly (13) to the tilt cylinder group with seal (14), four washers (15), and four bolts (16). Tighten bolts (16) to a torque of 50 ± 10 N·m (37 ± 7 lb ft). Secure tube assembly (13) to the cylinder group with washer (21) and bolt (37). Tighten bolt (37) to a torque of 120 ± 20 N·m (90 ± 15 lb ft).
11. Insert two hose assemblies (17) into link group (12).
NOTE: Assemble plates (18) with the part number visible.
12. Connect the hose assemblies on the blade end of the link group to the under side of plate (18) with two seals (14), four flanges (19), eight washers (15), and eight bolts (20). Tighten bolts (20) to a torque of 50 ± 10 N·m (37 ± 7 lb ft).
NOTE: Hardware on top of plate (18) can be started for later hose assembly installation.
(A) Rod end. (B) Head end.
13. Install plate (18) to the link group with four washers (21) and four bolts (22). Tighten bolts (22) to a torque of 120 ± 20 N·m (90 ± 15 lb ft).
14. Connect hose assembly (23) and hose assembly (24) to plate (18) (blade end) with two seals (14), four flanges (19), eight washers (15), and eight bolts (20). Tighten bolts (20) to a torque of 50 ± 10 N·m (37 ± 7 lb ft).
15. Install the other end of hose assembly (23) to the tilt cylinder (rod end) with seal (25), two flanges (26), four washers (15), and four bolts (20). Tighten bolts (20) to a torque of 50 ± 10 N·m (37 ± 7 lb ft).
16. Install the other end of hose assembly (24) to the tilt cylinder (head end) with seal (14), two flanges (19), four washers (15), and four bolts (20). Tighten bolts (20) to a torque of 50 ± 10 N·m (37 ± 7 lb ft).
17. On the tractor end of link group (12), connect the other ends of hose assemblies (17) to the under side of plate (18) with two seals (14), four flanges (19), eight washers (15), and eight bolts (20). Tighten bolts (20) to a torque of 50 ± 10 N·m (37 ± 7 lb ft).
NOTE: Hardware on top of plate (18) can be started for later hose assembly installation.
(A) Rod end. (B) Head end.
18. Install plate (18) to link group (12) with four washers (21) and four bolts (22). Tighten bolts (22) to a torque of 120 ± 20 N·m (90 ± 15 lb ft).
19. Connect hose assembly (27) and hose assembly (28) to plate (18) (tractor end) with two seals (14), four flanges (19), eight washers (15), and eight bolts (20). Tighten bolts (20) to a torque of 50 ± 10 N·m (37 ± 7 lb ft).
20. Install guard (29) to the tilt cylinder group with four washers (30), four bolts (31), and four nuts (32). Tighten bolts (31) to a torque of 240 ± 40 N·m (175 ± 30 lb ft).
21. Install guard (33) to the link group (blade end) with four washers (30), two bolts (34), and two nuts (35). Tighten bolts (34) to a torque of 240 ± 40 N·m (175 ± 30 lb ft).
NOTE: Assemble bolts (34) with the bolt heads on the blade side.
22. Loosen two bolts (C) on each end of plate (18). Install guard (36) to the plate and link group (tractor end) with two washers (21) and two bolts (37). Tighten bolts (C) and (37) to a torque of 120 ± 20 N·m (90 ± 15 lb ft).
Installation of Bulldozer Assembly
1. Block push arms (5) to the height of the tractor trunnions.
2. Move the tractor into the push arms.
3. On each side, install cap on push arm (5) with shims, two bolts, and two nuts. Refer to the topic entitled Shimming Procedure in this Special Instruction for shimming instructions.
NOTE: The items not numbered are part of the push arm group.
4. Install link group (12) to the tractor trunnion with shims, cap, four bolts, and four nuts. Refer to the topic entitled Shimming Procedure in this Special Instruction for shimming instructions.
NOTE: The items not numbered are part of the link group.
(A) Rod end. (B) Head end.
NOTE: Remove shipping covers from the working ports on the manifold.
5. Connect hose assembly (27) and hose assembly (28) to manifold with two seals (14), four flanges, eight washers, and eight bolts. Tighten bolts to a torque of 50 ± 10 N·m (37 ± 7 lb ft).
NOTE: The items not numbered are part of the tilt cylinder lines group.
6. On each side, install lift cylinders (7) to blade with cap, shims, four bolts, and four nuts. Refer to the topic entitled Shimming Procedure in this Special Instruction for shimming instructions.
NOTE: The items not numbered are part of the lift cylinder group.
7. Check oil in hydraulic tank and fill if necessary. Cycle cylinders full stroke in both directions to purge air from lines and cylinders. Refill hydraulic tank to full mark.
After the assembly is complete, get the machine ready for use as shown in the machine's Operation & Maintenance Manual.