OPERATOR'S MANUAL

AIRSYSTEM
WARNING
Neverattempttodisassemblea
componentuntilyouhaveread
andunderstoodrecommended
procedures.Somecomponents
containpowerfulspringsand
injurycanresultifnotproperly
disassembled.Useonlyproper
toolsandobserveallprecautions
pertainingtouseofthosetools.
Failuretocomplymayresultin
death,personalinjury,equipmentor
propertydamage.
WARNING
CompletelybypassingaBendix®
AD-ISairdryerwillbypassthe
system’spressureprotectionvalves.
Thiscouldleadtolossofair
pressureordamagetothevehicle’s
airsystem,whichcouldcause
anaccidentinvolvingdeathor
personalinjury.Alwaysadhereto
themanufacturer’sprocedureifit
isnecessaryinanemergencyto
temporarilybypassanAD-IS-series
airdryer.Failuretocomplymay
resultindeath,personalinjury,
equipmentorpropertydamage.
Theoperationofthevehicle’sbraking
systemandmanyvehicleaccessories
dependsuponthestorageand
applicationofahigh-pressureair
supply.
Yourvehicle’scompressortakes
outsideairandcompressesit,usually
to100-120psi(689-827kPa).The
compressedairthengoestothe
reservoirstobestoreduntilneeded.
Whenyouoperateyourairbrakes,the
storedcompressedairowsintothe
chamberswhereitisusedtoapply
yourtruckandtrailerbrakes.Thatis
why,whenyoupushdownonyour
brakepedal,youdon’tfeelthesame
amountofpressureonthepedalthat
youdowhenyouapplythebrakeson
yourcar.Allyouaredoingonyour
truckisopeninganairvalvetoallow
airtoowintothebrakechambers.
Contaminationoftheairsupplysystem
isthemajorcauseofproblemsin
air-operatedcomponentssuchas
brakevalves,andsuspensionheight
controlvalves.Tokeepcontaminants
tothelowestpossiblelevel,follow
thesemaintenanceprocedures.
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