01-2018 5035 01
71
rEmoviNg
/
rEplaciNg
tHE
uppEr
filtEr
aND
sEal
In order to remove or replace the filter and
the upper seal, proceed as follows:
1. Unscrew the upper piston key's (6) lat-
eral fixing screw (5).
2. Rotate the upper piston (1) upwards.
3. Remove and replace the upper seal (7).
4. Unscrew the upper filter (9) so that it can
be removed and replaced.
rEmoviNg
/
rEplaciNg
tHE
lowEr
filtEr
aND
sEal
In order to remove or replace the lower filter
and seal, proceed as follows:
1. Manually bring the unit to the discharge
position with the lower piston (12).
2. Unscrew the central fixing screw to re-
move the filter (10).
3. Press on the end of the piston guide ring
(14) to obtain an extra stroke from the
lower piston (12).
4. Using a small screwdriver, pry and slide
the lower piston (12) out from the piston
rod (14) whilst being careful not to dam-
age the piston or the sealing elements.
5. Remove and replace the lower seal (13).
