14
6. Troubleshooting
Fault
Cause
elimination
Locking mecha-
nism cannot be
opened.
Coupling points
distorted.
Set the top link
to the load-free
length by actua-
ting the control
valve.
Locking mecha-
nism does not
engage.
Dirt accumulation
inside the hook
Clean the hook
(see service
notes).
Spring broken.
Replace the
spring immedi-
ately.
Release cord taut.
Check the cord
guidance/length;
correct, if neces-
sary.
Unit-side bolt
nuts may not be
dismantled.
Coupling points
distorted.
Set the top link
to the load-free
length by actua-
ting the control
valve.
Leak.
Oil loss on
fittings.
Fittings worked
loose.
Retighten the
fittings.
Tightening torque
of the banjo bolts
on the non-return
valve: 80 Nm.
Leak.
Oil loss on piston
rod.
Seals worn.
Have the seals
replaced in a spe-
cialist workshop.
Leakage on the
tubing.
Defective tubing.
Replace the
tubing.
Change in length
under load after a
short standstill.
Piston seal worn.
Have the seal
replaced in a spe-
cialist workshop.
Shock absorber
not functioning.
No nitrogen.
Filling the pres
-
sure chamber by
specialist agricul-
tural and const-
ruction machinery
workshops.
Defective compo-
nents.
Replacing the
complete piston
rod with shock
absorber.
Top link is com-
pletely extended.
Change top link
settings (retract at
least 30 mm).
Shock absorber
not functioning.
Nitrogen availa-
ble. Incorrectly
filled.
Pay attention to
pressure equa-
lisation. Ensure
that the check
valve is released
when filling.
Too much nitro-
gen.
Have the pres-
sure and gas fill
quantity adjusted
by a specialist
workshop.
Locking device for
the bolt nuts is
missing.
Incorrect / defec-
tive assembly.
Install a new
coiled spring pin.
Connection
between the hook
and ball is no
longer secure.
Wear.
Check the ball,
hook and locking
pin for wear
and replace if
damaged.
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