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105
Maintenance and Service
Operator's Manual GB
8.5.4
8.5.4 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).
8.5.5 Replacement of filters
WARNING
High pressure / temperature hazard. Whenever
work is carried out on the filters, be prepared
for hot oil to escape which can cause injury.
! NOTE
Only filter cartridges from Hiab must be used. If
non-Hiab supplied cartridges are used, warranty
claims will be void.
• The hydraulic system must be switched off
before any work is carried out on the filter.
The filter must be released of pressure.
• Keep tools, working area and equipment
clean.
• After disassembling the filter, clean all parts,
check for damage or wear and replace if
necessary.