Stiga 2021 Edition PARK 320 P, Workshop Manual

Page: 42 / 124

WORKSHOP MANUAL
PARK
Chapter
4 - STEERING
EDITION
2020
PAGE
42 /
124
4.1.2 Steering system problems and remedies
An essential prerequisite for the operation of the steering valve is the axial backlash in the steer-
ing, which however has to exist because otherwise the steering would be difficult.
To check the steering functionality, first make sure the tyres are at the correct pressure, then per-
form the check with the engine at the maximum rotation speed.
IMPORTANT The machine must always be tested in motion, avoiding turning the steering wheel
when the machine is completely stopped; the equipment must not be lowered into the working
position without the pivoting wheels.
The following table shows the main problems, with the actions to be taken to solve them and refer-
ence to the operating instructions.
Problem Probable cause Solution
[ ...]
1. The steering wheel opera-
tion presents:
• difficulty in movement
• sudden movements
• blocks
• strange noises
The articulated joint is not lubri-
cated
Grease the two lubricators on the
central hub and the two lubricators
on the tilting axis
[2.5.5]
The steering wheel has no mini-
mum axial backlash
Remove a washer from under the
steering wheel
[2.2.4]
The chain is dirty, blocked or not
lubricated
Remove the chain, clean it with
clean gasoline and soak it in oil
before reassembling
[2.5.5]
The pinions are damaged or do
not rotate freely
Replace damaged pinions and
check that they rotate freely
[4.2.1]
The articulated joint is not free to
move
Lift the machine with a lifting fork
positioned in the centre of the
machine, so that the rear wheels
do not touch the ground and check
the free rotation of the rear part of
the machine. If the movement is still
irregular, it is necessary to intervene
on the bearings of the articulated
joint
[3.2.3]
2. The steering is not free to
turn
The steering wheel does not
rotate freely
Check if the steering column comes
into contact with other parts (e.g.
the elastic fixing plugs).
–
The steering wheel does not stay
in place.
Check if the steering column has
been damaged
–
Check the tightening of all screws –