Sakai SW800 Series, Shop Manual

Page: 55 / 159

2-041
Steering System
2-5-5. Description and operation of steering system
Description:
• The steering system is made up of steering
pump (4), Orbitrol (5), steering cylinders (6)
and line filter (7).
The steering mechanism is of an articulated
type in which the machine frame is
articulated at its center.
Operation
• Oil from pump (4) enters Orbitrol (5). The
valve feeds an amount of oil to steering
cylinders (6). The amount of oil handled
varies with the direction in which the steer-
ing wheel is rotated and with the speed at
which the steering wheel is turned.
• The fluid fed into both steering cylinders (6)
moves the piston rods (c) to achieve steer-
ing. The oil displaced from the opposite side
of the pistons flows, through Orbitrol (5) and
line filter (7), to the propulsion charge cir-
cuit.
★
Refer to “Charge circuit”.
• Relief valve (a) built in Orbitrol (5) opens to
relieve the pressure if the system pressure
exceeds the setting of the relief valve, thus
protecting the circuit.
T
OUT IN
P
D S
PTO
R
L
SW8002030
C
6 6
5
4
7
a
3
To propulsion
pump
Engine