Allison Transmission 3000 Series User Manual

5.0CAREANDMAINTENANCE
5.1PERIODICINSPECTIONS
NOTE:Thetermsuidandoilareusedinterchangeablyinthis
publication.Bothtermsrefertotheuidoroilinthetransmission
andnowhereelse.
CAUTION:Donotspraysteam,water,orcleaningsolutiondirectly
atelectricalconnectorsorthebreather.Fluidsforcedintoelectrical
connectorscancausefalsecodesandcross-talk.Steam,water,
orcleaningsolutionforcedintothebreatherwillcontaminatethe
transmissionuid.Sealallopenings,thebreather,andelectrical
connectionsbeforesprayingsteam,water,orcleaningsolutionon
thetransmission.
Itisveryimportanttocontinuallymonitortheuidlevelandconnections
fortheelectronicandhydrauliccircuits.Cleanandinspecttheexteriorof
thetransmissionatregularintervals.Severityofserviceandoperating
conditionsdeterminethefrequencyoftheseinspections.Makeregular
periodicinspectionsfor:
•Propertransmissionuidll.Referto5.8PERIODICFLUIDLEVEL
CHECKS.
•Transmissionuidthatisdiscolored,hasastrongodor,orexceededoil
analysislimits.
•Presenceofenginecoolantinthetransmissionuid.
NOTE:Transmissionoverhaulisrequiredwhenthetransmission
hasbeencontaminatedwithenginecoolant.AllisonTransmission
recommendsallclutchfrictionplates,lockupclutch,solenoids,and
rusted/damagedpartsbereplacedduringtherebuild.
•Presenceoftransmissionuidintheenginecoolingsystem.
•Leakinguidaroundttingsorhydrauliclines.
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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