Allison Transmission T 270 User Manual

2.ParkthevehicleonalevelsurfaceandshifttoN(Neutral).
3.Applytheparkingbrakeandallowtheenginetoidle(500–800rpm).
4.Cleandebrisfromaroundtheendofthelltubebeforeremovingthe
dipstick.
5.Removethedipstickandwipeitclean.
6.Insertthedipstickintothelltube,pushingdownuntilitstops,butstillin
itslooseorunscrewedposition.
7.Removethedipstickandobservetheuidlevel.Thesafeoperating
levelisanywherewithintheHOTRUNbandonthedipstick.Referto
Figure5–1.
8.IfthelevelisnotwithintheHOTRUNband,addordrainuidas
necessarytobringthelevelwithintheHOTRUNband.Referto
5.7TRANSMISSIONFLUIDREFILL.
9.Measureuidlevelmorethanonce.Besureuidlevelmeasurements
areconsistent.Ifreadingsarenotconsistent,besurethetransmission
breatheriscleanandnotclogged.
10.Ifreadingsarestillnotconsistent,contactyournearestAllison
distributorordealer.
5.8.1.3TRANSMISSIONDIPSTICKMARKINGSILLUSTRATION
RefertoFigure5–1.
5.8.2FLUIDLEVELCHECKSUSINGALLISON5THGENERATIONOR
NEWERSHIFTSELECTORS.
TheOLSisstandardinallmodelsexceptthe3700SPand4700/4800models
equippedwitharetarder.WiththeOLSandanAllison5thGenerationor
newershiftselector,youcangetamoreaccurateelectronicuidlevelcheck
thanwithadipstick.
5.8.2.1ELECTRONICFLUIDLEVELCHECKPREREQUISITES
•OLSisfunctionalandisauto-detectedbytheTCM.
•VehiclehasanAllison5thGenerationornewershiftselectorwithVFD.
NOTE:Thestripbuttonselectorcannotdisplayoillevel.
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Allison Transmission T 270 Specifications

General

Brand	Allison Transmission
Model	T 270
Category	Controller
Language	English