122
Maintenance and Service
Operator's Manual GB
8.5.4
! NOTE
DO NOT clean the filter cartridge.
When clogging indicator turns red or filter time is
reached (which ever is the sooner), the cartridge
must be replaced.
If indicator is not fitted,
replace the cartridge periodically as recom-
mended by Hiab.
1. Switch off hydraulic system. Release filter
of pressure.
2. Clean the immediate surrounding area of
the filter.
3. Remove the oil drain plug. Collect oil in a
suitable container.
4. Unscrew the filter housing. Collect oil in a
suitable container and clean or dispose of it
in accordance with environmental regula-
tions.
5. Remove the filter cartridge. Examine the
surface of the cartridge for dirt residue and
larger particles; these can indicate damage
to the components.
6. Clean the filter housing.
7. Examine the filter housing and head seg-
ment, especially sealing surfaces and
thread, for mechanical damage.
8. Always replace the O-ring of the filter
housing.
9. Oil the threads and sealing surfaces on the
filter housing and head segment, as well as
the O-ring.
10. Replace the filter cartridge with the new
one and screw carefully.
11. Fully tighten the filter housing. Then,
unscrew it 1/4-turn back.
12. Screw the oil drain plug.
13. Switch on hydraulic system and check the
filter for leakage.
