Stiga 13-7454-11, Руководство по ремонту

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1. Power steering servo
The power steering servo is a complete
unit. The power steering servo transfers
the oil flow to the external hydraulics. The
valves in the power steering servo are not
adjustable. The power steering servo has
5 hydraulic connections on the under-
side.
The following are part of the power steer-
ing servo:
A. Pressure relief valve Pressure relief
valve A is set at 125 bar. This means
that the pressure in the power steer-
ing servo and in the external hydrau-
lics can never exceed 125 bar.
B. Safety valves
The safety valves have the task of re-
ducing the pressure in lines 2 and 3 if
sudden obstructions or blockages oc-
cur while driving.
C. Control module
The control module has an integrated
function that always prioritises the
steering in those cases when the
steering and the external hydraulics
are used at the same time
D. Oil pump
The power steering servo includes an
oil pump, that controls the steering
cylinder in event of low hydraulic oil
pressure. For example if the engine
stops, it is still possible to steer the
machine.The steering wheel is then
harder to turn because there is no
power assistance from the hydraulic
pump.
4. The steering cylinder is connected be-
tween the front and rear frame on the
left side of the machine. By operating
the cylinder, the frame is placed at the
desired angle for steering the ma-
chine.
5. The collector block collects all tramp
oil and return oil from all hydraulic
components for transportation to the
tank.
WORKSHOP MANUAL
TITAN
Chapter
4 - Hydraulic system
EDITION
2018
Page
5 3