HYDRAULIC SYSTEM
L3301, L3901, L4701, WSM
8-M8
3. THREE POINT HITCH HYDRAULIC SYSTEM
[1] THREE POINT HITCH HYDRAULIC CIRCUIT
Hydraulic Oil Flow
1. When the engine is started, the hydraulic pump (3) is rotated to draw oil from the transmission case (1) through
the suction pipe. Supplied oil is filtered by the hydraulic oil filter (2).
2. Filtered oil is forced out by the hydraulic pump to the position control valve (5) through the delivery pipe.
3. The position control valve (5) switches the oil flow, and oil is channelled to the hydraulic cylinder (7) for the
three-point hydraulic system or returned to the oil tank (1).
• The hydraulic system has a relief valve (4) which restricts the maximum pressure in the circuit.
9Y1211012HYM0005US0
(1) Oil Tank
(Transmission Case)
(2) Hydraulic Oil Filter
(3) Hydraulic Pump
(4) Relief Valve
(5) Position Control Valve
(6) Lowering Speed Adjusting
Valve
(7) Hydraulic Cylinder
(8) Cylinder Safety Valve
(9) Hydraulic Cylinder Block
(10) Front Hydraulic Block
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