119
Maintenance and Service
Operator's Manual GB
8.5.3
WARNING
Dirt will damage the hydraulic system
It is not possible to clean the cartridge, it must
always be replaced.
1. Switch off hydraulic system. Release filter
from pressure.
2. Clean the immediate surrounding area of
the filter.
3. Remove the oil drain plug, if fitted. 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 filter 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 by hand.
Then, unscrew it 1/4-turn back.
12. Screw the oil drain plug.
13. Switch on hydraulic system and check the
filter for leakage.
