Kitz B Series - Page 38

DocumentNo.:KE-4025-06                                           35/50
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TypeBS-1toBS-6 
FordisassemblyofTypeBS-7actuators,contactKITZbeforedisassembly.
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 A compressed heavy-duty spring is packed within the spring case of the
TypeBS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BS-1toBS-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.Removethehexagonalbolts〈94〉anddisassembletheactuatorfromthebracket〈93〉.
3.Removeoneofthenuts〈55〉andoneofthetierod〈56〉fromtheactuator.
4.Mountoneofthefourthreadedrodstothepositionwherethetierodwasremoved,andsecurebothends
withthenuts(Fig.25).
5.Repeatthisworkwithallotherthreadedrodsandnuts,oneafteranother.
6.Gradually,alternatelyanddiagonallyloosenthenutsandremoveallwhenthespringhaslostitsrecoiling
force.Thenremovethespringcover〈158〉,springcase〈100〉andspring〈109〉.
7.Removeallofthethreadedrods.
8.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〉.
9. Removethehexagonalbolts〈35〉and disassemblethecylinder〈2〉from the housing〈1>,taking care not to
scratchtheinternalsurface.
10.Removethespringretainernut〈13b〉andthespringretainer〈150〉.
11.Removethecapscrew〈140b〉andtherodguide〈136B〉.
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.25