Removal Procedure
| Required Tools | |||
|---|---|---|---|
| Tool | Part Number | Part Description | Qty |
| A | 8S-9906 | Ratchet Puller | 1 |
| B | 8S-9906 | Ratchet Puller | 1 |
Start By:
- Remove the front guard. Refer to Disassembly and Assembly, "Front Guard - Remove".
- Release the pressure in the hydraulic system. Refer to Disassembly and Assembly, "System Pressure - Release".
| NOTICE |
|---|
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates. |
 |
Personal injury can result from hydraulic oil pressure and hot oil. Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system. Make sure all of the attachments have been lowered, oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand. |
 |
Note: Put identification marks on all lines, on all hoses, on all wires and on all tubes for installation purposes. Plug all lines, all hoses and all tubes. This helps to prevent fluid loss and this helps to keep contaminants from entering the system.
Note: Cleanliness is an important factor. Before the removal procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.
- Remove hydraulic hose assemblies (1) and (2) .
 | |
| Illustration 1 | g00490948 |
- Remove bolts (4). Remove block (3) and the bracket assembly as a unit.
- Disconnect two hydraulic hose assemblies (5) .
 | |
| Illustration 2 | g00490949 |
- Remove hydraulic tube assemblies (6) .
 | |
| Illustration 3 | g00490951 |
- Disconnect four hydraulic hose assemblies (8). Tie hydraulic hose assemblies (8) to the inside of the loader frame for clearance.
 | |
| Illustration 4 | g00490952 |
- Disconnect two hydraulic hose assemblies (7) from the diverter valve.
- Disconnect two hose assemblies (9) from block assembly (12) .
 | |
| Illustration 5 | g00490953 |
- Disconnect hose assembly (11) from shuttle valve assembly (10) .
- Remove block assembly (12) and hose assembly (11) as a unit.
- Remove hose assemblies (13), (14), and (15) .
 | |
| Illustration 6 | g00490954 |
- Disconnect hose assembly (16) from the main control valve.
 | |
| Illustration 7 | g00490956 |
Rear View | |
- Disconnect four hose assemblies (17) from the pilot oil manifold.
- Disconnect four hose assemblies (18) from the manifold and solenoid valves.
 | |
| Illustration 8 | g00490958 |
Rear View | |
- Remove hose clips (19) and (20) .
- Disconnect electrical connectors (21) .
 | |
| Illustration 9 | g00491103 |
- Remove bolt (22) and the wiring clips.
- Remove four mounting bolts (23) .
 | |
| Illustration 10 | g00491105 |
Rear Mounting Bolts | |
- Install Tooling (A) on the main control valve, as shown.
Note: When you use Tooling (A) to remove the plate assembly, pull the plate assembly upward and pull the plate assembly outward at the same time.
 | |
| Illustration 11 | g00491106 |
Typical Example | |
- Install Tooling (B) on the pilot valve, as shown.
Note: Use Tooling (B) in order to control the forward movement.
 | |
| Illustration 12 | g00491107 |
- Use Tooling (A) and Tooling (B) to remove the plate assembly. Remove the plate assembly so that the mounting plate rests on the front loader frame, as shown.
 | |
| Illustration 13 | g00491108 |
Typical Example | |
- Reposition Tooling (B) in order to support the rear of the mounting plate, as shown.
- Use Tooling (A) and Tooling (B) to remove the main control valve and mounting plate (24). The combined weight of the main control valve and of mounting plate (24) is 170 kg (375 lb).
 | |
| Illustration 14 | g00491109 |
Typical Example | |