Document No.:KE-4011-03 Page: 16/27
19.2 Disassembly of KITZ FBS pneumatic valve actuator
(1) Make the air pressure the same as the atmospheric level.
(2) Gradually loosen all air tubing fittings and ensure that the housing pressure has been
equalized with the atmospheric level. Dismantle an actuated valve from the pipeline and
disassemble an actuator from the valve.
(3) Unthread a hexagon headed bolt and a seal washer near the solenoid valve mounting pad.
It is possible that piston O-rings are worn and cause air leakage and pressurize the interior
of the housing. Therefore, before working on disassembly of an actuator, gradually loosen
the hexagon headed bolt and check that the housing pressure has been equalized with the
atmospheric level ( Fig.5 ).
Fig.5
(4) Remove a snap ring (with snap ring pliers), a position indicator, headed screws and an
indicator plate (Fig.6).
Fig.6
Indicator <97>
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