Interpump Group Pratissoli SM Serie Manual De Reparación página 49

During disassembly of the liners, take care not
to disperse the valve springs and the flat valves
(pos.  and , Fig. 101) as, not being locked,
they could fall.
If the valve seats are blocked on the head due
to the formation of scale or oxide, they must be
freed by inserting the tool (code 034300020) in
the outlet hole (pos. , Fig. 102).
Extract the valve housings and check the conditions of the
various components.
If necessary, make any replacements (pos. , Fig. 103).
Fig. 100
At every valve inspection, replace the sealing
rings and the O-rings between the liner and the
head, between the head and the liner spacer
in the area of the recirculation hole. Before
reassembly, clean and dry off the components
and all their seats inside the head.
Extract the outlet plates (pos. , Fig. 104), and their respective
guides (pos. , Fig. 106), with their springs (pos. , Fig. 105).
Check their conditions, replace if necessary and at the
intervals necessary as indicated in chapter 11 in the Use and
maintenance manual.
Fig. 101
Fig. 102
49
Fig. 103
Fig. 104
Fig. 105