14 - 6
Machine veers to one side when travelling
(continued).
Servo unit adjustment - machines from serial no. 676355
If the machine does not travel in a straight line, proceed as
follows:
Fault
1 Machine veers excessively to left in forward travel
2 Machine veers excessively to right in forward travel
3 Machine veers excessively to left in reverse travel
4 Machine veers excessively to right in reverse travel
Note: On standard machines the displacement limiter
adjustment screws are set to allow a gap when the servo
piston is at full travel. Therefore to limit piston travel it is
necessary to screw in the adjuster screws to eliminate the
gap before adjustment can take place. On High-flow
machines there is no gap between the adjuster screws and
the servo piston.
Section E
Hydraulics
9803/8500
Section E
14 - 6
Issue 1
Problem Solving
Loosen locknut on adjuster screw A, screw in adjuster screw
4 turn and tighten locknut. Try machine. Keep adjusting 4 turn
at a time until straight line travel is achieved.
Proceed as for fault 1 but adjust screw B.
Proceed as for fault 2 but adjust screw C.
Proceed as for fault 3 but adjust screw D.
C
A
D
B
S245710
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