24 Motor Grader Machine Systems Caterpillar

Removal Procedure

Start By:

1. Connect the steering frame lock.

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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: Put identification marks on all hoses, on all hose assemblies, on all wires, and on all tube assemblies for installation purposes. Plug all hose assemblies and all tube assemblies to prevent fluid loss and keep contaminants from entering the system.

1. Lower the blade onto a level surface. Fully extend the blade tip cylinders. Turn off the machine.

2. Release the system pressure. Refer to Operation and Maintenance Manual, "System Pressure - Release".
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   Illustration 1	g06283123

3. Install Tooling (A) onto the hydraulic tank. Attach an air supply hose onto Tooling (A). Apply 138 kPa (20 psi)to pull a vacuum on the hydraulic system.
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   Illustration 2	g01443496

4. Position Tooling (B) to support the blade, as shown. Disconnect hose assemblies (1).
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   Illustration 3	g01443436

5. Install Tooling (C) to pin assembly (2). Remove bolt (3). Use Tooling (C) to remove pin assembly (2).
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   Illustration 4	g01443438

6. Attach a suitable lifting device to blade tip cylinder (4). The weight of blade tip cylinder (4) is approximately 48 kg (105 lb).
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   Illustration 5	g01443440

7. Install Tooling (C) to pin assembly (5). Remove bolt (6). Use Tooling (C) to remove pin assembly (5).

8. Use the suitable lifting device to remove blade lift cylinder (4) (not shown).

9. Repeat Steps 4 through 8 to remove the other blade tip cylinder.

Disassembly and Assembly Information

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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 6	g01007218
typical example

(1) Torque for bolt ... 3100 ± 350 N·m (2286 ± 258 lb ft)

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

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

(4) Lubricate the threads with clean grease. Torque the cylinder head to 600 ± 130 N·m (440 ± 95 lb ft).

(5) Install bearing (5) 9.5 ± 0.50 mm (0.37 ± 0.019 inch) below the face.

(6) Install bearing (6) 9.3 ± 0.50 mm (0.37 ± 0.019 inch) below the face.

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. Do not use cloths or rags 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.

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Illustration 7	g01443602

1. Attach a suitable lifting device to blade tip cylinder (4). The weight of blade tip cylinder (4) is approximately 48 kg (105 lb). Use the suitable lifting device to position blade tip cylinder (4).

2. Use Tooling (K) to install pin assembly (5). Install bolt (6).
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   Illustration 8	g01443617

3. Use Tooling (K) to install pin assembly (2). Install bolt (3).
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   Illustration 9	g01443496

4. Connect hose assemblies (1). Remove Tooling (B).

5. Repeat Steps 6 through 4 to install the other blade tip cylinder.
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   Illustration 10	g06283123

6. Remove Tooling (A) from the hydraulic tank.

End By:

1. Disconnect the steering frame lock. Refer to Disassembly and Assembly, "Steering Frame Lock - Separate and Connect".