Pratissoli MK Serie Manual De Reparación página 72

Slip the spray-guard rings off the piston heads (pos. ,
Fig. 156).
If you need to replace the piston guide seal ring, you need to
remove the oil seal cover as follows:
Unscrew the two screws locking the oil seal cover (pos. ,
Fig. 157).
Position the piston guide at bottom dead centre, screw the
extractor code 27516400 including the M5 adapter code
27516500 in the holes in the cover (pos. , Fig. 158) and
remove the oil seal cover from the pump assembly (pos. ,
Fig. 159).
Replace the oil seal (pos. , Fig. 160) and the outside O-ring
Fig. 156
(pos. , Fig. 160).
Separate the seal support from the liner, remove the spring
ring and scraper ring (pos. , Fig. 161) to access the
pressure seals (pos. , Fig. 162).
Fig. 157
Fig. 158
72
Fig. 159
Fig. 160
Fig. 161