Kitz F Series - Page 26

Document No.：KE-4010-11                                            Page: 23/58
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21.2DisassemblyofKITZFSeriespneumaticvalveactuators
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(1)Maketheairpressurethesameastheatmosphericlevel. 
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(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.
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(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.1).
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 (Fig.1)               （Fig.2 ）
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(4) Remove a snap ring ( with snapring pliers), a position indicator, headed screws andan indicator plate
(Fig.2).
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(5)RemovetwoendcoverstogetherwithinsideO-ringsfromTypeFAdoubleactionactuator.  Removean
endcover anda springcover from Type FASspringreturnactuator,afterhavingensuredthataspring
cartridgeisde-energized(Fig.3). 
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   
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 Fig.3

 Fig.4

 (6)Loosenahexagonheadedboltandremoveapistonfromthehousing,bypickinganoutsideribwithpliers
(Fig.4).
Hexagonheadedbolt<13B>
Sealwasher<155B>
Snapring<48B>
Indicator<97>
Headedscrew<39>
Indicatorplate<98>
Endcover<2A>
Hexagonheadedbolt<35>

Sealwasher<155B>
Hexagonnut<133>


Hexagonsocketset
screw<132A>

Rack<103>
O-ring<45A>
O-ring<45D>
Housing<1>
Hexagonheaded
bolt
<13A>
Pistonbearing<67C>
Back-upring<146>
Piston<177>