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Allison Transmission 3000 Series User Manual

Allison Transmission 3000 Series
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NOTE:Acommoncauseforretarderperformancecomplaintsis
incorrecttransmissionuidlevel.Fluidlevelmustbesetcorrectly
formaximumretardereffectiveness.Aslittleas2liters(2quarts)
toohighortoolowcanreduceretardereffectivenessandincrease
transmissiontemperature.Referto5.8PERIODICFLUIDLEVEL
CHECKS.
NOTE:Theretarderrequiresabouttwosecondstoreachfullcapacity.
Besuretoanticipatethisdelaywhenusingtheretardertoprevent
unnecessaryservicebrakeapplicationsduringnon-emergencystops.
NOTE:Whenthetransmissionuidorenginewatertemperature
(anOEMoption)exceedsprogrammedlimits,retardercapacity
automaticallyreducesgraduallytominimizeoravoidsystem
overheating.
CAUTION:Observethefollowingcautionswhendrivingavehicle
equippedwitharetarder:
THERETARDERWORKSONLYWHENTHEENGINEISAT
CLOSEDTHROTTLE.
OBSERVETRANSMISSIONANDENGINETEMPERATURE
LIMITSATALLTIMES.Selectthelowestpossibletransmission
rangetoincreasethecoolingsystemcapacityandtotal
retardationavailable.
IntheeventofOVERHEATING,DECREASETHEUSEOF
THERETARDER;USETHESERVICEBRAKESTOSLOW
THEVEHICLE.
OBSERVETHERETARDER/SUMP“OVERTEMP”LIGHTto
besureitrespondsproperlytoretardertemperature.
Table4–7.TypesofRetarderControl
TypeDescription
AmountofApplication
Separateapplypedal
ZerotoFullapply
Manual
Handlever
*
Sixlevelsbasedonleverposition
Automatic
Auto“FullOn”
*
“FullOn”whenclosedthrottle
sensed
75

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Allison Transmission 3000 Series Specifications

General IconGeneral
TypeAutomatic Transmission Controller
Control ModuleIntegrated
Shift Energy ManagementYes
Number of Gears6
Torque ConverterYes, with lock-up clutch
RetarderOptional
PTO ProvisionYes
Input Voltage12V or 24V
Communication ProtocolSAE J1939
Operating Temperature Range-40°C to +85°C

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