Pratissoli KF5M Serie Manual De Reparación página 25

2.2.2.2 Reassembly
To replace the wiper, proceed as follows:
A) Assemble the wiper in the housing on the support
(Fig. 23), using a buffer as necessary and taking care not to
damage the seal lip.
B) Reposition the wiper support with lubrication on the
bush (Fig. 24), in the casing seat (Fig. 24/a). If removed,
replace the piston spacer unit with bush lubrication after
assembling the wiper support (see par. 2.2.3.2). Take care
not to damage the seal lip.
Fig. 22
Fig. 22/a
C) Reposition the head spacer and the head on the casing.
D) Fasten the head, tightening the 4 M12 screws and then
replace the front cover.
For the values of the torques and tightening sequences follow
the instructions contained in chapter 3.
2.2.3 Piston spacer unit
2.2.3.1 Disassembly
The piston spacer unit does not require any routine
maintenance. Maintenance is limited to visual checks only.
Proceed as follows to extract the unit:
A) After having removed the head and the head spacer, free
the units as indicated in Fig. 25.
Fig. 23
B) Check and verify their conditions, replace if necessary.
Check and verify the conditions of the bushes assembled
on the spacer (Fig. 25, pos. ); replace them if necessary.
25
Fig. 24
Fig. 24/a
Fig. 25