Toro Groundsmaster 4300-D - Filtering the Closed-Loop Traction Circuit

FlushingtheHydraulicSystem(continued)
12.MovethePTOswitchtotheONpositiontoengagethecuttingdecksandlet
themrunforseveralminutes.MovethePTOswitchtotheOFFposition.
13.Shutofftheengineandcheckforhydraulic-uidleaks.
Note:Checkthehydraulic-uidlevelinthehydraulictankandaddcorrect
quantityofuidifnecessary;refertotheOperator’sManual.
14.Operatethemachinefor2hoursundernormaloperatingconditions.
15.Checktheconditionofhydraulicuid.Ifnewuidshowsanysignsof
contamination,repeatsteps1through14againuntiltheuidisclean.
16.Whenthehydraulicuidisfreefromcontamination,assumenormaloperation
andfollowtherecommendedmaintenanceintervals.
FilteringtheClosed-LoopTractionCircuit
g189656
Figure80
1.Tractionpump
4.Hydraulichose(forward)
2.Leftelbowtting5.Rightelbowtting
3.Hydraulichose(reverse)
Filteringaclosed-loophydraulicsystemafteramajorcomponentfailure(e.g.,
traction(piston)pumporwheelmotor)isnecessarytopreventunwantedmaterial
fromtransmittingthroughoutthesystem.Ifaclosed-loophydraulicsystem
lteringtoolisnotusedtoensurethesystemcleanliness,repeatfailures,aswell
assubsequentdamagetootherhydrauliccomponentsintheaffectedsystem,
willoccur.T oeffectivelyremovethecontaminationfromtheclosed-looptraction
circuit,usetheTorohighowhydrauliclterandhydraulichosekits(referto
SpecialT ools(page4–31)).
1.Parkthemachineonalevelsurface,shutoftheengine,andremovethekey
fromthekeyswitch.
Groundsmaster
®
4300-D
Page4–91
HydraulicSystem:ServiceandRepairs
16226SLRevC