Pratissoli MK Serie Manuel De Réparation page 59

Insert the O-ring, exploded view pos. 17 (pos. , Fig. 100).
Pay special attention to O-ring insertion
indicated in pos. , Fig. 101.
Use a special tool code 27516000 (versions with
Piston Ø: 40 - 45 - 50) or code 27516100 (versions
with Piston Ø: 55 - 60 - 65) to prevent the O-ring
getting cut during insertion.
Insert the valve housing ring (pos. , Fig. 102) and the spring
(pos. , Fig. 103).
Fig. 100
Assemble the O-ring, exploded view pos. 17 (pos. , Fig. 104)
and the anti-extrusion ring, exploded view pos. 21 (pos. ,
Fig. 104) on the outlet valve plug.
Insert the valve plug housing complete with O-ring and anti-
extrusion rings.
After having completed assembly of the valve units and the
valve plug, apply the valve cover (pos. , Fig. 105) and screw
Fig. 101
in the 8 M16x55 screws (pos. , Fig. 106).
Fig. 102
59
Fig. 103
Fig. 104
Fig. 105