Toro Groundmaster Series - Testing the Steering and Lift Circuit

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TestingtheSteeringandLiftCircuit–LiftCylinderInternalLeakage

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Figure41

LiftCylinderInternalLeakage

Performtheliftcylinderinternalleakagetestifyouidentifyacuttingunitliftor

lowerproblem.Thistestdeterminesiftheliftcylinderbeingtestedisdamaged.

Whenperformingtheliftcylinderinternalleakagetest,thecuttingunitshouldbe

attachedtotheliftarms.Eachliftcylindermustbetestedindividually.

Theraise/lowercircuitoperationcanbeaffectedbytheliftcylinderbinding,extra

weightonthecuttingunit,and/orbindingoftheliftcomponents.Ensurethat

theseitemsarecheckedbeforeperformingtheliftcylinderinternalleakagetest.

Note:Thereliefvalvefortheliftcircuitisintegratedintothesteeringcontrolvalve.

TestProcedure

1.Parkthemachineonalevelsurface,raisethecuttingunit,engagethe

parkingbrake,andsetthekeyswitchtotheOFFposition.

2.Useajacktosupportthecuttingunitandpreventitfromlowering.This

removestheloadfromtheliftcylindersandrelievestheliftcylinderhydraulic

pressure.

Groundsmaster

3200,3300and3310

Page5–47

HydraulicSystem:TestingtheHydraulicSystem

19240SLRevA

Toro Groundmaster Series - Testing the Steering and Lift Circuit - Lift Cylinder Internal Leakage