Allison Transmission T 270 User Manual

4.0SELECTINGRANGEAND
SHIFTSCHEDULES
4.1SELECTINGRANGE
NOTE:SeethevehicleOriginalEquipmentManufacturer(OEM)for
informationaboutnonATIshiftselectors(OFSModels).
WARNING:T ohelpavoidunexpectedvehiclemovementthatmight
causedeath,seriousinjury,orpropertydamage,alwayshaveyour
footonthebrake,thethrottlereleased,andtheengineatidlebefore
makingaN(Neutral)toD(Drive);N(Neutral)toR(Reverse);D
(Drive)toR(Reverse);orR(Reverse)toD(Drive)selection.
NOTE:ConditionsresponsibleforilluminatingtheCHECKTRANS
indicatorwillnotallowanyshiftselectorchangesuntiltheDTC
relatedtotheconditiongoesinactive.TheMONITORdisplayshows
therangethetransmissionhaslockedinbecauseofanactive
DTC.TheSELECTdisplaygoesblankwhentheCHECKTRANS
indicatorison.Movethevehicletoasafelocationbeforeturning
offthevehicleandseekqualiedassistanceifneeded.Evenifthe
transmissionisnotinN(Neutral),theoperatorwillbeabletoview
DTCsbysimultaneouslypressingthe↑(Upshift)and↓(Downshift)
arrows,ifequippedwiththekeypadpushbuttonshiftselector,or
bypressingtheDISPLAYMODE/DIAGNOSTIC(DMD)button,if
equippedwiththebump-shiftleverselector.
WithanAllisonTransmission,theshiftselectorisusedbytheoperatorto
selectN(Neutral),R(Reverse),orarangeofforwardgears.Whenaforward
rangehasbeenselected,thetransmissionstartsinthelowestgearofthe
rangeand,asconditionspermit,automaticallyupshiftstothehighestgearin
theselectedrange.Selected7-speedmodelsinthe4000Seriesofferan
optionfortworeversegears–thestandardreversegearratioandanoptional
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Allison Transmission T 270 Specifications

General

Brand	Allison Transmission
Model	T 270
Category	Controller
Language	English