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| Illustration 1 | g00709669 |
Schematic of the Implement Hydraulic System (1) Pilot control valve (2) Auxiliary cylinders (if equipped) (3) Implement lockout feature (4) Tilt cylinder (5) Lift cylinders (6) Shuttle valve (if equipped) (7) Ride control accumulator (if equipped) (8) Ride control valve (9) Main control valves (10) Selector and pressure control valve (11) Check valve (12) Main relief valve (13) Oil line to steering system (14) Check valve (15) Pilot oil line to steering system (16) Pressure reducing valve (17) Pilot pump (18) Hydraulic pump (19) Implement pump (20) Breaker relief valve (21) Hydraulic oil filter (22) Hydraulic tank (A) Pilot oil line to brake system | |
The implement hydraulic system is composed of two basic circuits: the pilot system and the high pressure system. Hydraulic oil tank (27) is common to both of the circuits.
The main components of the pilot system consist of the following components: pressure reducing valve (16), pilot pump section (17), check valves (11) and (14), selector and pressure control valve (10), implement lockout feature (3) and pilot control valve (1) .
The main components of the high pressure system consist of the following components: hydraulic oil filter (21), implement pump (19), main relief valve (12), main control valves (9), tilt cylinder (4) and lift cylinders (5).
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| Illustration 2 | g00725000 |
Hydraulic tank (22) is located in the middle of the right side of the machine. Hydraulic oil filter (21) is mounted in the top of the hydraulic tank. The oil fill cap is attached to the front of the hydraulic oil tank.
Auxiliary cylinders (2) (if equipped) are located near the bucket.
Tilt cylinder (4) is located in the middle of the loader frame. Lift cylinders (5) are mounted on each side of the frame.
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| Illustration 3 | g00725066 |
Selector and pressure control valve (10) is located near the upper articulation joint on the right side of the machine.
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| Illustration 4 | g00725068 |
Pilot control valves (1) are located on the right side of the cab. Access is gained by removing a panel. Selector and pressure control valve (10) routes hydraulic oil to the pilot valves. Selector and pressure control valve (10) also provides hydraulic oil to pilot control valves (1). This will allow you to lower the bucket while the engine is stopped.
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| Illustration 5 | g00725070 |
Main control valves (9) are located inside the front frame of the machine. Access is gained by removing a panel.
The main control valves also contain the relief valves for the lift circuits and the tilt circuits.
The pilot pump, the steering pump, and the implement pump are part of hydraulic pump (18). Hydraulic pump (18) is located under the cab on the left side of the machine. The hydraulic pump is mounted on the pump drive on the flywheel end of the engine.
The drive end of hydraulic pump (18) is implement pump (19) .
The center section of hydraulic pump (18) is the steering pump. The oil from the steering pump is used to operate the steering cylinders in order to turn the machine.
The small section of hydraulic pump (18) is pilot pump (17).