Allison Transmission 3000 Series User Manual

VehiclesequippedwithaFuelSense
®
2.0packagewillincludeadisplayofthe
FuelSense
®
2.0logo.AtthediscretionoftheOEM,vehiclesnotequippedwith
anAllisonshiftselectordisplaycanprovidetheFuelSense
®
messageona
dashdisplay.TheAllisonshiftselectorwilldisplaythe“AllisonTransmission”
initializationscreenfollowedbya“FuelSense
®
2.0”screenuponvehicle
startup(refertoFigure4–4).
Figure4–4.FuelSense
®
2.0Display
4.3USINGTHEHYDRAULICRETARDER
Ahydraulicretarderisoptionalonmostmodelscoveredinthismanual.The
purposeoftheretarderistoassistinstoppingthevehicleduringstop-and-go
drivingandtocontrolthedownhillspeedofthevehicleonagrade.For
bothoftheseuses,theretarderextendsthelifeoftheservicebrakesand
enhancesvehiclecontrol.Theretarderautomaticallydisengageswhenthe
vehicleapproachesastop.
Whentheretarderenableswitchisturnedontoenabletheretardersystem,a
specialretardermodeshiftscheduleisactivated.Thisshiftscheduleallows
downshiftsathigherthanthenormalroadspeeds.Increasedcoolantow
throughthetransmissioncoolerandengineradiatoroccursduetotheraised
downshiftpoints.Referto4.3.1RETARDERCAPACITYREDUCTION.
72

Allison Transmission 3000 Series Specifications

General

Type	Automatic Transmission Controller
Control Module	Integrated
Shift Energy Management	Yes
Number of Gears	6
Torque Converter	Yes, with lock-up clutch
Retarder	Optional
PTO Provision	Yes
Input Voltage	12V or 24V
Communication Protocol	SAE J1939
Operating Temperature Range	-40°C to +85°C