Assembling The Piston Unit - Supports - Seals - Pratissoli LK Serie Manual De Reparación

Separate the gasket support from the liner by using a compass
spanner with Ø5 round ends, available on the market (pos. ,
Fig. 145) and unscrew the support until it is completely
removed (pos. , Fig. 146).
Manually remove the head rings, the pressure gaskets and the
restop rings (pos. , Fig. 147).
To remove the low pressure seal, use a thickness gauge or
another tool which will not damage the seal support housing
(pos. , Fig. 148).
Fig. 145
2.2.4 Assembling the piston unit – supports – seals
Proceed with reassembly following the reverse order indicated
in par. 2.2.3.
Replace the pressure seals moistening the lips
with silicone grease (without spreading it),
taking extra care not to damage them during
liner insertion.
The O-rings and the pressure seals must be
replaced at each disassembly.
Insert the low pressure seal in the seal support (pos. ,
Fig. 149) paying attention to the mounting direction which
requires that the sealing lip be set forward (towards the head).
Fig. 146
Fig. 147
63
Fig. 148
Fig. 149