Kitz B Series - Page 45

DocumentNo.:KE-4025-06                                           42/50
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TypeBSW-1toBSW-6 
FordisassemblyofTypeBSW-7actuator,contactKITZbeforedisassembly.
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 A compressed heavy-duty spring is packed within the spring case of the
Type BSW actuators. The spring cover may be pushed out and cause
personalinjuryifthetierodusedforfixingthespringcaseisloosenedand
removed. When disassembling the spring case, make sure to follow the
instructionsgiveninthismanual.
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■Preparation
PriortodisassemblyoftheBSW-1toBSW-6actuators,preparethethreadedrodsandnutsasshowninthe
tablebelow.
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■Disassembly
1.Reducetheinternalpressuretotheatmosphericlevelandremovetheairtubing.
2.Rotatethemanualhandwheel〈9〉clockwisetothefullyopenposition.
3.Removethehexagonalbolts〈94〉anddisassembletheactuatorfromthebracket〈93〉.
4.Removethehexagonalcapscrew〈10〉,springwasher〈145A〉,handwheelwasher〈43〉andhandwheel〈9〉.
5.Removethespringcovernut〈133B〉andthestopper〈49〉.
6.Removeoneofthenut〈55〉andtierod〈56〉fromtheactuator.
7.Mountoneofthefourthreadedrods inthepositionwherethetierodwasremovedandsecuretheboth
endswiththenuts(Fig.29).
8.Repeatthesameprocedurefortheremainingnut,tierodandthreadedrods.
9.Gradually,alternatelyanddiagonallyloosenthenutsforthethreadedrodsonthehousingsideandremove
allofthenutswhenthespringhaslostitsrecoilingforce.Thenremovethespringcover〈158〉,springcase
〈100〉andspring〈109〉.
10.Removeallofthethreadedrods.
11.Movethespringretainer〈150〉byhandapartfromtherodguideB〈136B〉tomovethepiston〈177〉towards
therodguideA〈136A〉.
Threadedrod Nut
Actuator
size
Thread Length(mm) Qty Qty
BS−1 M6  P1.0 315 4 8
BS−2 M8  P1.25 450 4 8
BS−3 M10  P1.5 615 4 8
BS−4 M12  P1.75 775 4 8
BS−5 M16  P2.0 1010 4 8
BS−6 M20  P2.5 1300 4 8
Threadedrod
Fig.29