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Installer Manual Siata V132-SFE-EV-VIRIDION - Maintenance
9.2.10. Internal pistons & seals and spacers replacement
9.2.10.1 Disassembly
Note
The procedure to disassemble the inlet and outlet pistons is the same.
No.
Note
Use special tools from the 2238/05 kit to disassemble the valve internal parts.
Caution
Disconnect the inlet/outlet fitting before proceeding.
A
Using a screwdriver, unscrew (1).
B
Remove the back panel (2).
C
Using a screwdriver, unscrew (3).
D
Remove the cover (4) by pushing its sides as shown.
E
Using a screwdriver, unscrew (5).
F
Remove the controller (6) from the valve (7).
G
Using tool (9), unscrew the valve cap (8).
H
Match the tool (11) with the piston hole and push to slip off the piston (10).
I
Using tool (9), try to match the pins (13) of the tool in the ring nut's holes (14).
J
Using tool (9), unscrew and remove the ring nut (12).
K
Place tool (11) inside the valve and pull until you slip off the seals and spacers pack (15).
Caution
Do not forget the correct sequence of the seals and spacers pack (15). If you reassemble
the pack incorrectly, the valve will not work properly.
Note
The sequence of the seals and spacers is different for the valve inlet and outlet.
L
If necessary, change the piston (10) and the seals and spacers pack (15).
M
Replace and grease all the o-rings with silicone grease (cod. 8500).
Note
Take care not to mix up the inlet and outlet pistons (the inlet piston is longer than the outlet
piston).
88 / 110
Operation
Ref. MKT-IM-009 / C - 08.06.2018
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