Toro Groundsmaster 4500-D Series - Page 177

ProcedureforSteeringCylinderInternalLeakageTest(continued)
CAUTION
Preventpersonalinjuryand/ordamagetoequipment.Readall
WARNINGS,CAUTIONSandPrecautionsforHydraulicTestingatthe
beginningofthissection.
1.Parkmachineonalevelsurfacewiththecuttingdecksloweredandoff.
Makesurehydraulicoilisatnormaloperatingtemperature,engineisoffand
theparkingbrakeisapplied.
2.Turnthesteeringwheelforarightturnsothatthesteeringcylinderrod
isfullyextended.
3.Thoroughlycleantheareaaroundthehydraulichoseattherodendofthe
steeringcylinder.
4.Placeadrainpanunderthesteeringcylinder.Removehydraulichosefrom
thettingontherodendofthesteeringcylinder.Installasteelpluginthe
disconnectedhose.Leavecylinderttingopen.
5.Removeallhydraulicoilfromdrainpan.Makesurethatemptydrainpan
remainsundertheopenttingofthesteeringcylinder.
6.Withtheengineoff,turnthesteeringwheelforarightturn.Observetheopen
ttingontheextendedsteeringcylinderasthesteeringwheelisturned.
Ifoilcomesoutofthettingwhileturningthesteeringwheel,thesteering
cylinderhasinternalleakageandmustberepaired(seeSteeringCylinder
Service(page5–144)).Checkdrainpanforanyevidenceofoilthatwould
indicatecylinderleakage.
7.Ifasteeringproblemexistsandthesteeringcylindertestedacceptably,the
steeringcontrolvalverequiresservice(seeSteeringControlValveService
(page5–141)).
8.Aftertestingiscompleted,removeplugfromthehydraulichose.Connect
hosetothesteeringcylindertting.
9.Checkoillevelinhydraulicreservoirandadjustifneeded.
Groundsmaster
®
4500-D/4700-D
Page5–75
HydraulicSystem:Testing
19245SLRevA