Toro 08743 - Testing the Lift Circuit - Lift Cylinder Internal Leakage

TestingtheLiftCircuit–LiftCylinderInternalLeakage
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Figure42
LiftCircuit–LiftCylinderInternalLeakageTest
Performtheliftcylinderinternalleakagetestifyouidentifyanattachmentliftor
lowerproblem.Thistestdeterminesiftheliftcylinderbeingtestedisdamaged.
Whenperformingtheliftcylinderinternalleakagetest,theattachmentshouldbe
attachedtothehitchassembly.
Theraise/lowercircuitoperationcanbeaffectedbytheliftcylinderbinding,extra
weightontheattachment,and/orbindingofthehitchcomponents.Ensurethat
theseitemsarecheckedbeforeperformingtheliftcylinderinternalleakagetest.
Note:Onmodel08743machines,thereliefvalvefortheliftcircuitispartofa
remotemanifoldlocatedneartheliftvalve.Onmodel08745machines,therelief
valvefortheliftcircuitisintegratedintothesteeringcontrolvalve.
TestProcedure
1.Parkthemachineonalevelsurface,raiseanyattachments,engagethe
parkingbrake,andsetthekeyswitchtotheOFFposition.
2.Useajacktosupporttheattachmentandpreventitfromlowering.This
removestheloadfromtheliftcylinderandrelievestheliftcylinderhydraulic
pressure.
3.Cleananddisconnectthehydraulichoseandttingattherodendofthelift
cylinder;refertoFigure43.
HydraulicSystem:TestingtheHydraulicSystem
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