Main Control Valve - Install
Installation Procedure
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| NOTICE |
|---|
Failure to properly assemble parts or failure to follow established procedures can lead to damage of the parts and assembly. To avoid damage to parts, always identify and mark the parts so that they can be installed in the same location. Ensure that gear surfaces align. Never force parts during assembly. |
- Check the condition of all O-ring seals that are used in the hose assemblies that are connected to the main control valve. If any of the O-ring seals are worn or damaged, use new parts for replacement.
- Fasten an appropriate lifting device to the main control valve. Install the main control valve in the machine. The weight of the main control valve is approximately 204 kg (450 lb).
- Install four bolts (14) and the washers that hold the main control valve in position.
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| Illustration 1 | g00374996 |
- Connect hydraulic hoses (15) to the bottom of the main control valve.
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| Illustration 2 | g00496085 |
- Connect two hydraulic hoses (13) to the back of the main control valve.
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| Illustration 3 | g00374909 |
- Install check valve (12). Install four bolts (11) .
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| Illustration 4 | g00374900 |
- Install panel (10). Install four bolts (9) .
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| Illustration 5 | g00379852 |
- Connect three electrical connectors (8) .
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| Illustration 6 | g00374899 |
- Connect six hydraulic hoses (7) to the left valve bank.
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| Illustration 7 | g00374898 |
- Connect seven hydraulic hoses (6) to the right valve bank.
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| Illustration 8 | g00374848 |
- Connect hydraulic hose (5) to the swing motor.
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| Illustration 9 | g00374846 |
- Connect four hydraulic hoses (4) to the center valve bank.
- Connect eleven hydraulic hoses (3) to the top of the main control valve.
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| Illustration 10 | g00374843 |
- Carefully inspect the main control valve for any hydraulic hoses or wiring harnesses that must be connected.
- Install cover (2). Install two bolts (1) and the washers.
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| Illustration 11 | g00367222 |
- Fill the hydraulic oil tank with oil to the correct level. Refer to Operation and Maintenance Manual, "Lubricant Viscosities and Refill Capacities" for the proper filling procedure and the proper level for the hydraulic oil system.
- Start the machine. Check the operation of all of the hydraulic controls. Check all of the hose connections and all of the tube connections on the main control valve for leaks.
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