40
EN
A world
in motion
since 1919!
KUKKO Werkzeugfabrik
Series YRH - YRE - YSM
#
description of error
Cause of error
resolution of error
5
Pump is defective.
use an operative pump.
6
load is too high for the
cylinder.
immediately shut the
system down. Choose
a cylinder with the
appropriate capacity.
7
Cylinder seals leak
Have the cylinder
serviced by the
manufacturer or by
a trained hydraulics
technician.
8
Cylinder only extends
partially
oil level of the pump is
too low.
refill the oil in the
hydraulic pump
according to the
instructions.
9
Coupling on a valve is not
completely tightened.
Check all connections
and valves and tighten
them, if necessary.
if necessary, disassemble
and reassemble the
hydraulic system.
10
Cylinder piston sticks.
Have the cylinder
serviced by the
manufacturer or by
a trained hydraulics
technician.
11 Cylinder extends in fits
and starts.
there is air in the
hydraulic system.
the pump must be
installed above the
cylinder and the piston
of the cylinder must
point downward. retract
and extend the cylinder
in this installation
completely several times
until the operation works
smoothly.
12
Cylinder piston sticks.
Have the cylinder
serviced by the
manufacturer or by
a trained hydraulics
technician.
