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STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com
Manual 5021, rev. 00 10/2015 – SC/VHS - 19 -
1) Cylinder seals replacement (fig. 6.2)
- Remove the screws (2.1) and disassemble the
spring cartridge (2.3) from the head flange (2.2)
after that replace the o-ring (2.4) from the seal
groove.
2) Piston seals replacement (fig. 6.2)
- Remove the nut (2.5) from the piston rod (2.6)
and then remove the cylinder tube (2.7).
- Replace the sliding ring (2.11) and the piston
seals (2.9) and (2.10) from the grooves.
3) Rod seals replacement (fig. 6.3)
- Remove the nut (2.5) from the piston rod (2.6)
and then remove the cylinder tube (2.7).
- Remove the bushing (2.12) and the washer
(2.13) and slide off the piston rod (2.6) from the
head flange (2.2).
- Replace the rod seals (2.14) and (2.15) and the
O-ring (2.8) from the grooves.
4) Replacement of stopper protection seals
(fig.6.1).
-
Remove travel stop protection (3.2) if necessary
replace o-ring (3.3).
Before re-assemble clean all seal grooves carefully and lubricate them with protective oil or grease film.
It is possible to disassemble and replace seals of hydraulic cylinder disconnecting it from the actuator
body in order to bring in a safe area.
Fig. 6.3
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