GenerationcontrolsshiftselectortochecktheOLS.Thismethodismore
accuratethanthedipstickmethod.
Usethedipstickmethodifanyofthefollowingsituationsexist:
•Iftransmissionuidtemperatureisbelowthetemperaturetocheckit
electronically,conductaCOLDCHECKtodeterminewhetherthereis
enoughuidtostartandmovethevehicle.
•IfthevehicledoesnothaveanAllison5thGenerationshiftselector
ortheOEMhasnotintegratedtheelectronicmessagesregardingoil
levelintotheirselector.
•IftheOLSorvehiclewiringisdefective,ortheOLSwasnotauto
detected,preventingelectronicaccesstouidlevel.
5.8.1FLUIDCHECKUSINGDIPSTICK.
Therearetwotemperaturebandsmarkedonthedipsticktoallowfor
transmissionuidexpansionwhenthetemperatureincreases.Thelower
band,referredtoasCOLDCHECK,isusedwhenthetransmissionuidis
belowoperatingtemperature.Theupperband,referredtoasHOTCHECK,
isusedwhenthetransmissionuidisatnormaloperatingtemperature.
TheOEMmayrefertotheseasCOLDFULL/COLDADD(COLDCHECK)
andHOTFULL/HOTADD(HOTCHECK).RefertoFigure5–1forfurther
informationondipstickmarkings.
NOTE:Forthelocationofthelltubeanddipstick,refertoFigure2–1
andFigure2–2fornon-PTOapplicationsandFigure2–3,Figure2–4,
andFigure2–5forPTOapplications.For4700/4800Models,referto
Figure2–6forthelocationofthelltubeanddipstick.
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