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| Illustration 1 | g01329862 |
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(1) Implement control valves
(2) Implement control valves (3) Control manifold (steering pilot oil backup) (4) Implement pilot oil filter (5) Control manifold (6) Main relief valve (7) Hydraulic tank (8) Piston pump (implement and steering) (9) Pump control valve (10) Oil filter (hydraulic return) (11) Joystick controls (12) Steering control valve (13) Centershift lock (14) Blade accumulators (if equipped) | |
Note: Some of the motor graders may have different implements. The number of control valves in each valve group may vary.
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| Illustration 2 | g01330288 |
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Control valves (1) are located at the front of the machine. | |
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| Illustration 3 | g01330289 |
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Control valves (2) are located on the frame in front of the cab. | |
There are eight implement control valves on each machine. There is a maximum of fourteen implement control valves that can be installed on each machine. The implement control valves are mounted in two different locations. Valve bank (1) is mounted on the frame near the front of the machine. Valve bank (2) is mounted on the frame in front of the cab. The implement control valves direct oil to the corresponding implements.
Control Manifold (Steering Pilot Oil Backup)
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| Illustration 4 | g01330285 |
Steering pilot valve (3) is located in front of the cab. Valve (3) directs pilot oil to the steering control valve.
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| Illustration 5 | g01329921 |
Implement pilot oil filter (4) is located at the rear of the machine. The implement pilot oil filter removes debris from the pilot oil for the implement solenoids.
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| Illustration 6 | g01329944 |
Control manifold (5) is located at the service center near the rear of the machine. Manifold (5) directs pilot oil to the implement control valves.
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| Illustration 7 | g01330269 |
Hydraulic tank (7) is located between the engine and the radiator. Tank (7) stores oil.
Piston Pump (Implement and Steering)
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| Illustration 8 | g01330022 |
Piston pump (8) is located below the hydraulic tank. Pump (8) is a variable displacement axial piston pump.
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| Illustration 9 | g01330014 |
Pump control valve (9) is attached to the hydraulic and steering pump. Pump control valve (9) keeps pump flow at the level that is needed to fulfill the requirements of the hydraulic and steering system.
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| Illustration 10 | g01330283 |
Hydraulic filter (10) is located in front of hydraulic tank (7). Filter (10) removes debris from the hydraulic system.
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| Illustration 11 | g01330284 |
Joystick controls (11) are located inside the cab on both sides of the operator's seat. Controls (11) send an electrical signal to the solenoids of the hydraulic system.
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| Illustration 12 | g01330287 |
Steering control valve (12) is located in front of the cab. Valve (12) directs hydraulic fluid to the steering system and the implement system.
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| Illustration 13 | g01329919 |
Centershift lock (13) is located on the center of the link bar. The centershift lock prevents the circle from moving to either side of the machine when the centershift lock is engaged.
Blade Accumulators (If Equipped)
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| Illustration 14 | g01330080 |
Blade cushion accumulators (14) are mounted on the frame in front of the blade lift cylinders. Accumulators (14) cushion the head end of the cylinder from sudden rises in pressure.