Operating manual No.
057-2-6-0008-R0
Page 27
Version 2018
EN
The piston
retracts
even if the
unloading
pedal is not
pressed
Oil leak in the
hydraulic
system
Check the leak in the system and repair it
Internal pump
failure
Check the leak in the pump and contact the manufacturer.
The piston
does
not
return
Oil supply line
throttled
or
plug
improperly
connected
Check the oil supply line
If the return is
due
to
gravity,
possible lack
of load on the
cylinder
Load the cylinder
Cylinder
spring broken
Check and repair the cylinder
Cylinder
release valve
not working
Check and repair the cylinder
Internal pump
failure
Check the leak in the pump and contact the manufacturer.
The
pump
capacity
is
insufficient
The
pump
tank has not
been vented
Vent the tank