PIETRO FIORENTINI VS/AM 58, Technical Manual, Page: 10 / 14

Technical Manual MT 302-I
9
5. Remove the obturator guide-valve obturator unit
6. Separate it by unscrewing the lock screw pos
○
3
.
7. Replace all the components belonging to the spare
parts kit.
4.3 REASSEMBLY
Reassemble the parts, using the references put on the parts in the
disassembly phase, to correctly match all the connections and
following the procedures described in the preceding paragraphs in
reverse order
1- Reassemble the obturator guide-obturator unit.
2- Refit it inside the body pos.
○
1 .
3- Screw the valve seat pos
○
2
onto the body.
4- Position the spring pos
○
21
and the spring holder plug pos
○
9
.
4.4 CHECKING SEALS AND CALIBRATION
1- See par.3.3 for this check.
2- Secure the spring holder plug pos
○
9
by means of the ring
nut pos
○
8
.