143H and 163H Motor Graders Machine Systems Caterpillar

Removal Procedure

Start By:

1. Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Machine Preparation for Disassembly and Assembly".

Show/hide table

Cylinders equipped with lock valves can remain pressurized for very long periods of time, even with the hoses removed. Failure to relieve pressure before removing a lock valve or disassembling a cylinder can result in personal injury or death. Ensure all pressure is relieved before removing a lock valve or disassembling a cylinder.

Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.

Show/hide table



Illustration 1	g01012750

1. Position blade (1) to the left side of the machine and install suitable blocking.

Show/hide table



Illustration 2	g01012751

2. Remove covers (2) .

Show/hide table



Illustration 3	g01012752

3. Disconnect hose assemblies (3) .

4. Install suitable blocking under sideshift cylinder (4) .

Show/hide table



Illustration 4	g01012763

5. Remove cotter pin (5) .

6. Remove pin (6) .

Show/hide table



Illustration 5	g01012764

7. Remove cotter pin (9). Remove nuts (7) and (8) .

   Note: Note the location of washers (10) .

Show/hide table



Illustration 6	g01012792

8. Attach a suitable lifting device to sideshift cylinder (4). Use the suitable lifting device to apply tension to sideshift cylinder (4). Slide sideshift cylinder (4) off blade (1) and remove sideshift cylinder (4). The weight of sideshift cylinder (4) is approximately 91 kg (200 lb).

Show/hide table



Illustration 7	g01012896

9. Remove bolt (9) and remove pin (10A) .

10. Remove bracket assembly (11) .

    Note: Note washers (12) between the bracket assembly (11) and the rod end of sideshift cylinder (4) .

Disassembly and Assembly Information

Show/hide table

Cylinders equipped with lock valves can remain pressurized for very long periods of time, even with the hoses removed. Failure to relieve pressure before removing a lock valve or disassembling a cylinder can result in personal injury or death. Ensure all pressure is relieved before removing a lock valve or disassembling a cylinder.

Illustration 8	g01012935

(1) Use Tooling (E) in order to torque the bolt. Tighten the bolt to a torque of 900 ± 100 N·m (660 ± 75 lb ft).

(2) Lubricate sealing lips with a thin covering of the lubricant that is being sealed.

(3) Apply Tooling (D) to the wiper seal groove before you assemble the wiper seal to the head.

Note: Lubricate the threads with clean grease and torque head (4) to 600 ± 130 N·m (440 ± 95 lb ft). Use Tooling (F) to apply the grease.

Installation Procedure

Note: Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned in cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts. Lint may be deposited on the parts which may cause later trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement.

Show/hide table



Illustration 9	g01012792

1. Attach a suitable lifting device to sideshift cylinder (4). Slide sideshift cylinder (4) on blade (1) and install sideshift cylinder (4). The weight of sideshift cylinder (4) is approximately 91 kg (200 lb).

Show/hide table



Illustration 10	g01012896

2. Install bracket assembly (11) .

3. Install pin (10A) and install bolt (9) .

   Note: Note washers (12) between the bracket assembly (11) and the head end of sideshift cylinder (4) .

Show/hide table



Illustration 11	g01012764

4. Position nuts (7) and (8). Install cotter pin (9). Use washers (10) to maintain a maximum clearance of 1.8 mm (0.07 inch) between the bracket assembly and the beam. Tighten nut (8) to zero clearance and back off one slot.

   Note: Note the location of washers (10) .

Show/hide table



Illustration 12	g01012763

5. Install pin (6) .

6. Install cotter pin (5) .

Show/hide table



Illustration 13	g01012752

7. Connect hose assemblies (3) .

8. Remove the suitable blocking under sideshift cylinder (4) .

Show/hide table



Illustration 14	g01012751

9. Install covers (2) .

Show/hide table



Illustration 15	g01012750

10. Position blade (1) to the original location and remove the suitable blocking.