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5-20
Problem
Cause
Remedy
H e a v y k i c k - b a c k i n
H e a v y k i c k - b a c k i n
steering wheel in both
steering wheel in both
directions.
directions.
Wrong setting of cardan shaft and gear-
wheel set.
Correct setting as shown in this manual.
u r n i n g t h e s t e e r i n g
u r n i n g t h e s t e e r i n g
w h e e l a c t i v a t e s t h e
w h e e l a c t i v a t e s t h e
steered wheels opposite.
steered wheels opposite.
Hydraulic hoses for the steering cylin-
ders have been switched around.
Connect lines to correct ports.
Hard point when starting
Hard point when starting
t o t u r n t h e s t e e r i n g
t o t u r n t h e s t e e r i n g
wheel
wheel
Spring force in priority valve too weak.
Oil is too thick (cold).
Replace spring by a stronger.
Let motor run until oil is warm.
Too little steering force
Too little steering force
(possibly to one side
(possibly to one side
only).
only).
Pump pressure too low.
Too little steering cylinder.
Piston rod area of the differential cylin-
der too large compared with piston
diameter.
Correct pump pressure.
Fit a larger cylinder.
Fit cylinder with thinner piston rod or 2
differential cylinders.
Leakage at either input
Leakage at either input
shaft, end cover, gear-
shaft, end cover, gear-
wheel set, housing or
wheel set, housing or
top part.
top part.
Shaft defective.
Screws loose.
Washers or O-rings defective.
Replace shaft seal.
Tighten screws.
Replace.
Summary of Contents for HL955
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