Hydraulic Circuit For Three Point Hydraulic System - Kubota M6800S Workshop Manual

M6800 · M6800S · M8200 · M9000, WSM
2. HYDRAULIC CIRCUIT FOR THREE POINT HYDRAULIC
SYSTEM
[M6800(S)]
(1) Oil Tank (Transmission Case)
(2) Hydraulic Oil Filter Cartridge
(3) Engine
(4) Hydraulic Pump
1. When the engine is started, the hydraulic pump (4) is rotated to suck oil from transmission case (1) through the
suction pipe.
Supplied oil is filtered by the hydraulic oil filter cartridge (2).
2. Filtered oil is forced out by the hydraulic pump to the auxiliary control valve (10) through the delivery pipe.
3. With the auxiliary control valve (10) in neutral position, oil is channelled from "N" port to the control valve (6).
4. The hydraulic system has a relief valve (5) which restricts the maximum pressure in the circuit.
The hydraulic cylinder (8) has a cylinder safety valve (9) to relieve shock pressure due to heavy implement bounce.
5. The control valve is actuated by the mechanical linkage for "Position control" or "Draft control" or both ("Mix
control").
6. These tractors have one single / double acting auxiliary control valve as standard equipment.
(5) Relief Valve
(6) Control Valve
(7) Lowering Speed Adjusting
Valve
(8) Hydraulic Cylinder
(9) Cylinder Safety Valve
(10) Auxiliary Control Valve
8-M2
HYDRAULIC SYSTEM
A : To Implement Cylinder
B : To Implement Cylinder
N : N Port
KiSC issued 03, 2008 A