8-M23
ME8200, ME9000, WSM
HYDRAULIC SYSTEM
6. POWER STEERING HYDRAULIC CIRCUIT
The power steering is hull hydrostatic type (controller
code No. 3A111-63072).
When the engine starts, the hydraulic pump (1) of the
power steering system pressure-feeds the oil drawn from
the transmission case through the suction pipe.
The oil which has entered steering controller (2) is
directed to control valve (6).
As the steering wheel is turned, control valve (6)
operates and the oil passes through gerotor (4) and into
steering cylinder (3). The cylinder rod then moves to
control the directional movement of the front wheels.
Return oil from steering cylinder (3) passes through
control valve (6) is sent to the hydraulic shuttle valve
through PTO clutch valve.
When the engine is not operating, and the steering
wheel is turned, gerotor (4) rotates to supply oil to
steering cylinder (3). Thus the machine can be steered
manually.
Refer to Workshop Manual for Tractor Mechanism in
detail.
W1017427
(1) Hydraulic Pump
(2) Steering Controller
(3) Steering Cylinder
(4) Gerotor
(5) Check Valve
(6) Control Valve
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