126
Maintenance and Service
Operator's Manual GB
8.5.7
8.5.7 Bleeding air from the hydraulic
system
Bleed the air from the hydraulic system:
• after changing the hydraulic oil
• after working on the hydraulic system
• if your crane works slowly or jerkily
• if your crane has not been used for a long
time
WARNING
Air in the hydraulic system can lead to faults
and damage
To bleed air from the hydraulic system, pro-
ceed as follows:
Move each crane cylinder and each hydraulically
operated piece of add-on equipment at least twice
to its end positions (slowly).
8.6
Troubleshooting
8.6.1 Main fuses
If the microprocessor detects a fault, this must
be rectified immediately.
Fault
Probable cause
Action
The control system does not
work at all.
The indicator light next to
On/Off button on the user
panel is not lit, even if you
push On/Off.
Defective fuses.
1.
Replace faulty fuses
in the:
- vehicle
- standard box
- relay box
(See Description,
Components, Fuse,
Location)
2.
Check all the cable
connections.