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Allison Transmission 4430 OFS

Allison Transmission 4430 OFS
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Transfercasedesignfeaturesincludehelicaltransfergearsanda
self-containedlubricationoilpump.Thetransfergearsprovidearatioof
1.2:1.Thelubricationoilpumpisdrivendirectlybytheoutputtothedrive
axles.Sincelubricationispresentwheneverthedriveaxleisturning,itisnot
necessarytodisconnectthedrivelinesoraxleshaftswhenthevehicleis
towedorpushed.Atorqueproportioningdifferentialgivesafront/reartorque
splitof30/70whenthemulti-platedifferential(C7)isnotengaged.Whenthe
multi-platedifferentialC7isengaged,thetorquesplitbecomes50/50.The
multi-platedifferentialC7isengagedindifculttractionsituations.
Theseventhforwardspeedinthistransmissionisthelowestnumericalgear
ratioprovidedandisintendedforuseinoff-roadconditions.Thisrangeis
obtainedwhenamulti-plateC6inthetransfercaseisapplied.
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