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