PTO Operation & Installation Guide
06/24/2010
Pleasereadthisinformationcarefullyandcalluswithanyquestionsbeforeyouorderavehiclesoyou
understandthespecificcapabilitiesofourPTOsystem.
•TheAutomatictransmissionPTOisturbinedrivennotenginedriven.Whatthismeansisthat
thePTOwillworkonlywiththestationarymodeinpark,orinmobilemodewiththevehicle
movingatapproximately7mphandaboveorinneutral.BecauseofthisthePTOsystemisnota
suitablesystemforvehicleslike:snowplows,autoloaderwreckers,ordumptrucksiftheyare
usedtodumpandspreadatacrawlingspeed.Thesevehiclesaremoreeffectivewithan
enginedriven‘clutchpump’typehydraulicpump.Alternatively,Parker‐Chelseamakesa
productcalledStoredEnergyManagementSystem(SEMS)thatallowssuchapplicationsto
function.
•ThesizeandpackagespacedonotallowforcomponentsdrivenbyadriveshaftfromaPTOon
ourtrucks.Theautomatictransmissionmodelshaveexhaustsystemcomponentsintheway
thatcannotberelocatedbecauseitwilleffectemissionscompliance.Themanualtransmission
modelshaveeitherthetransfercase(4x4)orthetransmissioncrossmemberintheway.
•ThemanualtransmissionhasthecapabilitytosupportasplitshaftPTO.Theautomatic
transmissionmodeldoesnotsupportasplitshaftPTObecausethetransmissioncannotbeheld
indirectdrivegear.
PTO GENERAL GUIDELINES
•TheDodgeRam3500/4500/5500Chassiscabmodelsequippedwithdieselenginesthathavethe
PTOprepoption(LBN)havethecapabilityofmountingandcontrollingaPTO.
•ThegasolinepoweredmodelsdonothavePTOcapability.
•TheAisinAS68RCAutomatictransmissioncanusedevicesupto35HPand130ft‐lbstorque.
Chelsea270or252seriesfitthistransmission.MuncieCS6seriesfitthistransmission.Thereis
nodifferenceinhowPTOandpumpmountbetween4x2and4x4automaticmodels.
•TheG56manualtransmissionsarelimitedinpoweroutputonlybythePTOmanufacturers’
maximums.Chelsea442(deepmount)seriesfitthistransmission,howeveron4x4modelsthis
PTOisveryclosetothefrontdriveshaft.MuncieAlphaseriesfitsthistransmission.
Pumpsizes
•Theautomatictransmissionmodelshavebeentestfitwith17GPMratedsizesinglepumpsand
tandem11GPMratedpumps.Whiletheselargerpumpshavelimitedclearancetotheexhaust
systemandmanypeoplehavementionedthisasaconcern,itshouldbenotedthattheexhaust
pipeinthePTOareaisadoublewalledpipewhichprovidessignificantheatinsulation
properties.Infact,inourextremeheatPTOtestinginover100degreeFFahrenheit
temperatureweneverexceeded200degreeFonthePTO,pumporhoses.
•Themanualtransmissionmodelsareasfollows:The4x2modelshavenoparticularpackaging
limitationswithrespecttodirectmountpumps.The4x4modelsarelimitedbythelocationof
thefrontdriveshafttoapproximatelyastandard11GPMratedpump(althoughlargerpumps
mayhavebeensuccessfullyfittedinthefield).However,somecustomershavehadsuccess
usingbentaxispistonpumps(mountedforward)togetsubstantiallyhigherflows.
•IfyouhavespecificPTOandpumpfitmentquestionsandcanprovidetheactualPTOandpump
combination,wecantestfititandprovidepicturesandinstructionsonhowtoinstallyour
specificcombination. PTO Limitations
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