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Problem
Backlash
"Shimmy" effect. The
steered wheels vibrate.
(Rough tread on tires
gives vibrations)
Steering wheel can be
turned slowly in one or
both directions without
the steered wheels turn-
ing.
Steering is too slow and
heavy when trying to turn
quickly.
"Kick back" in steering
wheel from system. Kicks
from wheels.
Cause
Cardan shaft fork worn or broken
Leaf springs without spring force or broken
Worn splines on the steering column
Air in the steering cylinder
Mechanical connections or wheel bearings
worn
High priority valve setting pressure
One or both shock valves are leaky or are
missing in steering valve
Insufficient oil supply to steering unit, pump
defective or number of revolutions too low
Relief valve setting too low
Relief valve sticking owing to dirt
Spool in priority valve sticking owing to dirt.
Too weak spring in priority valve
Fault in the system
5-15
Remedy
Replace cardan shaft.
Replace leaf springs.
Replace steering column.
Bleed cylinder.
Find and remove the reason for air
collection.
Replace worn parts.
Set pressure as regular value.
Clean or replace defective of missing
valves.
Replace pump or increase number of
revolutions.
Adjust valve to correct setting.
Clean the valve.
Clean the valve, check that spool moves
easily without spring.
Replace spring by a stronger.
Contact authorized man or shop.
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