14
Difference in length be-
tween the sleeves
Stroke length difference
Piston rods are not same
length.
Please contact your sup-
plier.
Loose piston
Dismantle outer fork,
remove hydraulic set from
fork and tighten piston (40
Nm)
Difference in height be-
tween forks
One fork point hangs lower
than the other
One of the KOOI-REACH-
FORKS® has been perma-
nently deformed as a result
of overloading.
Remove KOOI-REACH-
FORKS® from carriage
immediately and contact
supplier
One of the KOOI-REACH-
FORKS® is not hanging on
the carriage plate
Hang the KOOI-REACH-
FORK® properly onto the
carriage plate (check lock-
ing mechanism)
Carriage plate is not com-
pletely horizontal
Please do contact your
forklift truck supplier.
The forks do not match
(forks belong to different
sets)
Check serial Nºs.
Wear strips on one KOOI-
REACHFORK® are more
worn than the other
Replace wear strips
Excessive play between
fork blade and sleeve
Wear strips worn out
Sleeves worn out
Replace sleeves
Observation
Symptom
Possible Cause
Possible Solution
Oil leak
Oil leak between cylinder
head and piston rod
Bent piston rod
Replace piston rod and
cylinder head
Scratched/damaged piston
rod
Leaking piston seal
Replace cylinder head
Oil leak between cylinder
head and fork blade.
Leaking O-Ring
Replace O-ring
Oil leak at connector
Leaking copper ring
Replace copper ring
Loose connector
Tighten connector
Forks leaking oil
One or both KOOI-REACH-
FORKS® are cracked
Remove KOOI-REACH-
FORKS® from carriage
immediately and contact
supplier.
Forks not moving in unison
Sleeves not moving in
unison
A piston seal is leaking
Replace the piston with the
leaking seal
Left or right sleeve extends
without operating lever be-
ing used.
Air in hydraulic system
Follow step 5 of the chapter
on ‘Assembly’
Troubleshooting
