Toro Reelmaster 3100-D - Page 92

TractionCircuitCooling
Thetractioncircuitiscooledbyableedoffcircuitinthepistonpump.Thepiston
pumpincludesaninternalbleedvalvewhichallowsasmallamountofhydraulic
uidtopassfromthereturnsideofthepumpwhileoperatingthetractionunit
intheforwarddirection.Thechargecircuitreplenishesuidthatisbledfrom
thetractioncircuitbythebleedvalve.
Whenoperatingthetractioncircuitinthereversedirection,thebleedvalve
closesoncereversepressurereaches13.8to20.6bar(200to300PSI)to
allownormalreverseoperation.
Note:Thebleedvalvethreadsintothepistonpumpbackplate.Accesstothe
bleedvalverequiresremovalofthebackplatefromthepistonpump.
HydraulicSystem:HydraulicFlowDiagrams
Page5–16
Reelmaster
®
3100-D/3105-D
20252SLRevA