Haulotte H12 SD, Operating And Maintenance Instructions Manual

Page: 46 / 55

45
FAULT CHECK PROBABLE CAUSE SOLUTION
Steer system
•
Lack of oil in hydraulic circuit.
•
Top up oil level as
required.
•
No movement
when handle
actuated.
•
Control handle not working.
•
Replace handle
(After-Sales Dpt).
•
Hydraulic pump
making noise.
•
Lack of oil in tank.
•
Top up oil level as
required.
•
Cavitation in
hydraulic pump.
(Vacuum in pump
due to lack of oil)*
•
Hydraulic oil
becomes cloudy,
opaque and
turns white
(bubbles visible).
•
Oil viscosity too high.
•
Drain circuit and replace
with specified oil.
•
Oil viscosity too high.
•
Drain circuit and replace
with specified oil.
•
Hydraulic circuit
overheating.
•
Lack of hydraulic oil in tank.
•
Top up oil level as
required.
•
System working
erratically.
•
Hydraulic oil not at optimal
operating temperature.
•
Perform a few movements
with no load to allow oil to
heat up.
•
Check fuse.
•
Change fuse.
•
Charge tester not
working.
•
Tester not working properly.
•
Repair or replace tester.
*WARNING:
Cavitation = bubbles
B pressure = serious fault (oleopneumatic system)
B pr heat = unacceptable situation.
**NOTE: it takes about 4 h for oil emulsified by cavitation to regain its normal appearance.