18
Maintenance
Carry out preliminary work as described before.
Remove OME from the system and pour out the remaining operating fluid.
Unscrew and remove the screws 32 and carefully detach the casing 2 from the cover
4;
– Caution! The parts are under preload.
Detach casing 2 and filter insert 8 and all other internally located parts from cover 4;
take care with O-rings 28 (not with OME 25 MXL) and 30.
Replace filter element 8; cleaning is not recommended in most cases.
Dismantling the pressure relief valve
The pressure relief valve 8.1 at the OME 25 MXL is integrated in the filter insert 8 and
cannot be dismantled.
Loosen circlip 20 with pliers and dismantle washer 18, spring 16 and valve buffer 14
from valve housing 6.
Clean all parts and inspect for wear.
Check the sealed surface of valve buffer 14; replace if necessary.
– When assembling lightly oil valve buffer and ensure the correct seating in the valve
casing 6.
Assembling
Continue assembly by reversing the dismantling sequence, paying particular attention to
compliance with the following steps.
Put up cover 4, opening facing upwards.
Lightly oil O-ring 28 (seal at OME 25 MXL).
When mounting casing 2 ensure the correct seating of the filter insert 8 and of the
pressure relief valve casing 6; in particular take care with regard to the position of
compression spring 22 and O-rings 28 and 30.
Tighten screws 32 uniformly to
3 Nm
.
