EasyManuals Logo

Allison Transmission 3500 SP User Manual

Allison Transmission 3500 SP
162 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #77 background imageLoading...
Page #77 background image
Table4–7.TypesofRetarderControl(cont'd)
TypeDescription
AmountofApplication
Singlepressure
switch
Offor“FullOn”(basedonbrake
pressure)
BrakePressureApply
**
Threepressure
switches
1/3,2/3,or“FullOn”(basedon
brakepressure)
PedalPosition
**
Specialbrakepedal1/3,2/3,or“FullOn”(basedon
brakepressure)
SAEJ1939DataLinkDigitalmessagefrom
enginecontroller
ZerotoFullApply
Auto“half-on”plus
pressureswitch
*
Halfcapacityatclosedthrottleor
“FullOn”withbrakepressure
Auto“1/3on”plustwo
pressureswitches
*
1/3capacityatclosedthrottle
or2/3and“FullOn”withbrake
pressure
Handleverplus
pressureswitch
*
6levelsofmodulationwithlever,
or“FullOn”withbrakepressure
Footpedalplus
pressureswitch
Fullmodulationwithseparate
pedal,or“FullOn”withbrake
pressure
Combinationsofthe
abovesystems
**
Handleverplus
interfaceforspecial
pedal
*
6levelsofmodulationwithlever,
or3levelsofmodulationbased
onpedalposition
*
Thesecontrolsystemsmayapplytheretarderathighspeedongradeswhenthevehiclehas
roadspeedlimitingandtheretarderisenabled.
**
Forretarderapplysystemsintegratedwiththeservicebrakesystem,theretarderismost
effectivewhenappliedwithlightbrakepedalpressurefor1–2secondstoallowtheretarderto
fullycharge.Addedpedalpressurecanbeappliedwhenmoreaggressivebrakingisdesired.
4.3.1RETARDERCAPACITYREDUCTION.
NOTE:Intheeventofexcessivelyhightemperaturesinthe
transmissionuidand/orenginecoolantduringretarderoperation,
themaximumavailableretardercapacitymaybereduced,affecting
vehicleoperation.
Retardercapacityisreducedifthetransmissionretarder-outortransmission
sumptemperatureexceedsspeciedlimits,asdetectedbytemperature
sensorswhichareintegraltothetransmission.Inaddition,retardercapacityis
reducedintheeventofelevatedenginewatertemperaturebasedon:
76

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Allison Transmission 3500 SP and is the answer not in the manual?

Allison Transmission 3500 SP Specifications

General IconGeneral
BrandAllison Transmission
Model3500 SP
CategoryController
LanguageEnglish

Related product manuals