Removal Procedure
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Table 1
| Required Tools |
| Tool |
Part Number |
Part Description |
Qty |
| A |
8S-7630 |
Stand |
2 |
| 8S-7631 |
Tube |
2 |
| 8S-7615 |
Pin |
2 |
| 8S-8048 |
Saddle |
2 |
| B |
8S-9906 |
Ratchet Puller |
1 |
| C |
8S-9906 |
Ratchet Puller |
1 |
Start By:
- Connect the steering frame lock. Refer to Disassembly and Assembly, "Steering Frame Lock - Separate and Connect".
Note: The main control valve and mounting that is used in machines with Pilot Hydraulic systems and machines with Electro-Hydraulic controls are similar. Therefore, both assemblies can be removed in the same manner.
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| NOTICE |
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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. |
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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. |
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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.
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| Illustration 1 | g00350673 |
- Use the hydraulics to put the lift arms in position on Tooling (A), as shown. Position wood blocks under the loader bucket, as shown.
- Release the pressure in the hydraulic system. Refer to Disassembly and Assembly, "System Pressure - Release".
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| Illustration 2 | g00350674 |
- Remove six nuts (1) and front guard (2) .
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| Illustration 3 | g00352832 |
- Disconnect two hydraulic hose assemblies (3) .
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| Illustration 4 | g00352834 |
- Remove hydraulic tube assemblies (4) .
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| Illustration 5 | g00352835 |
- Disconnect four hydraulic hose assemblies (6). Tie hydraulic hose assemblies (6) to the inside of the loader frame for clearance.
- Disconnect two hydraulic hose assemblies (5) from the diverter valve.
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| Illustration 6 | g00352836 |
- Disconnect two hose assemblies (7) from the main control valve assembly.
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| Illustration 7 | g00352837 |
Rear View |
- Disconnect pilot hose (8), pilot hoses (9), and hydraulic hose assembly (10) .
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| Illustration 8 | g00352839 |
- Disconnect four pilot hoses (11) from the pilot valve.
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| Illustration 9 | g00352841 |
- Disconnect two electrical connectors (12) .
- Remove bolt (13) and the wiring clip.
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| Illustration 10 | g00352842 |
Rear Mounting Bolts |
- Remove four mounting bolts (14) .
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| Illustration 11 | g00352843 |
- Install Tooling (B) on the main control valve, as shown.
Note: When you use Tooling (B) to remove the plate assembly, pull the plate assembly upward and pull the plate assembly outward at the same time.
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| Illustration 12 | g00352844 |
- Install Tooling (C) on the pilot valve, as shown.
Note: Use Tooling (C) in order to control the forward movement.
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| Illustration 13 | g00352845 |
- Use Tooling (B) and Tooling (C) to remove the plate assembly. Remove the plate assembly so that the mounting plate rests on the front loader frame, as shown.
- Reposition Tooling (C) in order to support the rear of the mounting plate, as shown.
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| Illustration 14 | g00352846 |
- Use Tooling (B) and Tooling (C) to remove the main control valve and mounting plate (15). The combined weight of the main control valve and of mounting plate (15) is 170 kg (375 lb).
