13
GB
12. Troubleshooting
If the equipment is operated properly you should experience no problems with malfunctions or faults. In the
event of any malfunctions or faults, please check the following before you contact your customer services.
Fault
Possible cause
Remedy
The lifting forks cannot be
raised to the maximum
height
Too little hydraulic oil
Fill in hydraulic oil
The lifting forks cannot be
raised
No hydraulic oil
The hydraulic oil is dirty
The setting nut (K) is too high
Air in the hydraulic unit
Fill in hydraulic oil
Change the hydraulic oil
Set the setting nut (K) (see section 8.)
Vent the hydraulic unit (see section 9.)
The lifting forks cannot be
lowered
The piston rod or pump housing has
been damaged by overloading or an
uneven load distribution
The piston is stuck
The setting nut (K) is set wrongly
Replace the piston rod or pump
housing*
Replace the piston*
Set the setting nut (K) (see section 8.)
Leaks
The seals are worn or damaged
The hydraulic module is defective
Replace the seals*
Replace the hydraulic module*
The lifting forks descend
without the relief valve
working
The hydraulic oil is dirty
The hydraulic module is defective
Air in the hydraulic unit
The seals are worn or damaged
The setting nut (K) is set wrongly
Change the hydraulic oil
Replace the hydraulic module*
Vent the hydraulic unit (see section 9.)
Replace the seals*
Set the setting nut (K) (see section 8.)
Important!
* This work must be performed by qualified and approved specialists.
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