Screw Jacks M0-M5 / J1-J5
13
7
Malfunctions
Service: Should malfunctions occur during operation, first try to identify the manner of the malfunction with
the table below and to repair it. If it is a malfunction you can not repair, please contact our technical service
(see last page).
Malfunction
Cause
Remedy
Unusual, constant running
noises.
Rolling / grinding: Bearing
damage
Tapping: Irregularity in
gearing
Check grease fill level.
Consult the technical service.
Unusual, irregular running
noises.
Foreign object in the grease.
Check grease fill level.
Stop drive.
Consult the technical service.
Unusually high temperature at
the housing.
Not enough grease.
Defective gearing or
bearing.
Check and correct grease filling.
Consult the technical service.
Grease or oil exists at the shaft
seal ring.
Defective sealing.
Consult the technical service.
Grease or oil exists at the shaft
seal ring and at the screw.
Too much grease in the gear.
Check and correct grease fill
level.
Consult the technical service.
Trapezoidal screw quickly runs
dry.
Assembly fault: Impermissible
lateral forces.
Repair assembly fault.
Consult the technical service.
The worm gear shaft does not
turn or the screw turns but does
not move although the worm
gear shaft is turned.
The connection between the
shaft and the hub or the gearing
is broken.
Have the gear repaired.
