5-19
Problem
Cause
Remedy
Backlash
Backlash
Cardan shaft fork worn or broken.
Leaf springs without spring force or broken.
Worn splines on the steering column.
Replace cardan shaft.
Replace leaf springs.
Replace steering column.
"Shimmy" effect. The
"Shimmy" effect. The
steered wheels vibrate.
steered wheels vibrate.
(Rough tread on tires
(Rough tread on tires
gives vibrations)
gives vibrations)
Air in the steering cylinder.
Mechanical connections or wheel bearings
worn.
High priority valve setting pressure.
Bleed cylinder.
Find and remove the reason for air
collection.
Replace worn parts.
Set pressure as regular value.
Steering wheel can be
Steering wheel can be
turned slowly in one or
turned slowly in one or
both directions without
both directions without
the steered wheels turn-
the steered wheels turn-
ing.
ing.
One or both shock valves are leaky or are
missing in steering valve.
Clean or replace defective of missing
valves.
Steering is too slow and
Steering is too slow and
heavy when tr ying to
heavy when tr ying to
turn quickly.
turn quickly.
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.
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.
"Kick back" in steering
"Kick back" in steering
w h e e l f r o m s y s t e m .
w h e e l f r o m s y s t e m .
Kicks from wheels.
Kicks from wheels.
Fault in the system.
Contact authorized man or shop.
Summary of Contents for HL955
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