Hyundai 12ESH Operation Manual page 27

Stacker can only travel
2
forward (or backward)
Stacker cannot stop during
3
travelling
4 Braking failure
5 Steering stuck
Driving wheel has heavy
6 and noisy steering, motor in
overload condition
7 Fork not lift
Forks not descend after
8
lifted
23
or bad contact between
commutator and carbon brush
③ Coil of travelling motor disconnected
bad contact
④ Bad contact performance
contactor
⑤ MOSFET circuit plate faulted
① Contactor has
performance or burnt
② Circuit panel faulted
Contacts damaged
① Mounting screw of micro switch
loosened or damaged
② Connecting wire of brake loosened
or brake damaged
③ Braking plate worn
① Steering gear bearing damaged
② Steering gear bearing lacks oil or has
too much dust
① Gear and bearing have foreign
matters
② Bearing mounting has gaps
③ Front wheel bearing damaged
① Overloading
② Pressure of relief valve too low
③ Lifting oil cylinder has abnormal inner
leakage
④ Inadequate hydraulic oil
⑤ Inadequate battery voltage
⑥ Operation handle not in horizontal or
vertical position, oil pump motor
not powered on
⑦ Oil pump motor damaged
⑧ Oil pump damaged
⑨ Lifting button switch damaged
⑩ Key not turned on or damaged
○
11 Battery voltage severely inadequate
① Inner mast distorted due to
overloading
② Outer mast distorted due to
overloading
Repair or replace
of
Repair or replace
Repair or replace
poor contact
Repair or replace
Repair or replace
Cut off power supply in
emergency and replace
contacts
Adjust or fasten screws,
or replace micro switch
Fasten screws or repair
brake
Replace braking plate
Replace bearing
Clean bearing
Clean or replace bearing
Adjust gap
Replace bearing
Reduce load
Adjust it higher
Replace sealing parts
Add
hydraulic oil
Charge battery
Improper operations
Repair or replace
Repair or replace
Repair or replace
Repair or replace
Charge
Repair or replace
Repair or replace
some filtered