Toro Groundsmaster 5910 Series - Page 166

ProcedureforSteeringCylinderInternalLeakageTest
1.Makesurehydraulicoilisatnormaloperatingtemperature(54to66ºC(130
to150ºF)).
2.Parkmachineonalevelsurface,lowercuttingdecksfully,disengagePTO,
engageparkingbrakeandstopengine.Removekeyfromkeyswitch.
3.Turnthesteeringwheelsothesteeringcylinderrodofthecylindertobe
testedisfullyextended.
4.Thoroughlycleantheareaaroundthehydraulichoseattherodendofthe
steeringcylindertobetested.
2
3
1
g287793
Figure71
1.Steeringcylinder
3.Hydraulichose
2.Rodendtting
5.Placeadrainpanunderthesteeringcylinderbeingtested.Removehydraulic
hosefromthettingontherodendofthesteeringcylindertobetested.
Installasteelpluginthedisconnectedhose.
6.Removeallhydraulicoilfromdrainpan.Makesurethatemptydrainpan
remainsundertheopenttingofthesteeringcylinder.
7.Withtheengineoff,turnthesteeringwheelinthesamedirectionneeded
toextendthecylinder.Observetheopenttingontheextendedsteering
cylinderasthesteeringwheelisturned.Ifoilcomesoutofthettingwhile
turningthesteeringwheel,thesteeringcylinderhasinternalleakageand
mustberepairedorreplaced(seeSteeringCylinderService(page5–141)).
Checkdrainpanforanyevidenceofoilthatwouldindicatecylinderleakage.
8.Aftertestingiscompleted,removeplugfromthehydraulichose.Connect
hosetothesteeringcylindertting.
9.Repeatsteeringcylinderinternalleakagetestforothersteeringcylinderif
necessary.
10.Ifasteeringproblemexistsandthesteeringcylinderstestedacceptably,the
steeringcontrolvalverequiresservice(seeSteeringControlValveService
(Formachinesserialnumberbelow40345000)(page5–137)).
11.Aftertestingiscompleted,checkoillevelinhydraulicreservoirandadjustif
needed.
HydraulicSystem:Testing
Page5–66
Groundsmaster
®
5900&5910
16227SLRevB