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99
TROUBLE SHOOTING
No. Fault Cause Countermeasures
1The forks cannot
reach the max. height
• Low hydraulic oil level • Inject hydraulic oil
2The forks cannot be
raised
• No hydraulic oil
• Hydraulic oil is impure
• Check hydraulic oil
• Replace the hydraulic oil
3Pump station motor
cannot run
• Emergency button is not
switched on
• Low voltage of the storage
battery
• Wiring terminal of the power
line is loose
• Motor contactor is damaged
• Turn the emergency button
clockwise
• Charge the battery
• Fasten the wiring terminal
• Replace the parts
• Contact you distributor
4The forks will not
lower
• Uneven centre of gravity
of goods or overloading
causes deformation of the
large piston rod or the oil
tank body
• The forks are rusted
and hard to move due to
long-term exposure to air
when the platform stays in
the higher position for an
extended period of time
• The release valve of the
hydraulic pump station is
worn or damaged and thus
cannot be opened
• Replace the large piston
rod or the oil tank body
• Lower the forks to the
lowest position when not
using the crane and make
sure to lubricate the piston
rods
• Replace the release valve
of the pump station
• Contact you distributor
5Oil leakage • Sealing parts are aged or
damaged
• Some parts are broken
• Replace the parts
• Replace the parts
• Contact you distributor
6Forks lower itself • The relief valve is unable to
be shut tightly due to impure
hydraulic oil
• Sealing parts are aged or
damaged
• Release valve is damaged
• Replace the hydraulic oil
• Replace the parts
• Replace the parts
• Contact you distributor
7Storage battery
cannot be charged
• Storage battery is damaged
• Charging plug is loose
• Replace the parts
• Check connections
