Toro 31051 - Hydraulic Flow Diagrams; Traction Circuit

HydraulicFlowDiagrams
TractionCircuit
Hydraulicsystempressureisgeneratedbyapiston-drivenpumpcoupledto
theengineywheel.Thisvariable-displacementpumpprovideshydraulicow
underregulatedpressuretothefrontandrearwheelmotors,andchangesits
uidowratewithaninternalswashplate.Theswashplateangleiscontrolled
bythetractionpedalthroughalinkagesystem.Theangleoftheswashplate
determinesthepumpow,andultimatelythespeedofthemachine.Whenthe
tractionpedalismovedtoitsfullestextension,thepumpswashplaterotates
fullytoprovidemaximumpumpoutputowandpeakmachinespeed.Withthe
enginerunningandthetractionpedalintheNEUTRALposition,theswashplate
withinthehydraulicpumpareheldintheverticalposition,providingnouidow
towheelmotors,andthemachineremainsstationary.
Theclosedlooptractioncircuitincludes2rearwheelmotors,2frontwheel
motors,andadifferentialvalve.
HydraulicSystem:HydraulicFlowDiagrams
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ProLineH800
19241SLRevB