Toro Groundsmaster 3280-D - Filtering the Closed-Loop Traction Circuit (Machine Serial Number above 316000000)

FilteringtheClosed-LoopTractionCircuit(MachineSerialNumber
above316000000)
g225778
Figure78
1.Rightelbowtting4.Leftelbowtting
2.Hydraulictube(forward)
5.Hydraulicpump
3.Hydraulichose(reverse)
Filteringaclosed-loophydraulicsystemafteramajorcomponentfailure(e.g.,
hydraulicpumporhydraulicmotor)isnecessarytopreventunwantedmaterial
fromtransmittingthroughoutthesystem.Ifaclosed-loophydraulicsystem
lteringtoolisnotusedtoensurethesystemcleanliness,repeatfailures,aswell
assubsequentdamagetootherhydrauliccomponentsintheaffectedsystem,
willoccur.Toeffectivelyremovethecontaminationfromtheclosed-looptraction
circuit,usetheTorohighowhydrauliclterandhydraulichosekits(referto
SpecialT ools(page5–39)).
1.Parkthemachineonalevelsurface,shutoftheengine,andremovethekey
fromthekeyswitch.
IMPORTANT
Beforeliftingthemachinewithajack,reviewandfollowJacking
Instructions(page1–6).
2.Liftandsupportthemachinesothatallthewheelsareofftheground.
Note:Ifthehydraulicmotorwasreplaced,installahigh-owltertotheinlet
ofthenewmotorinsteadoftothehydraulicpumptting.Thiswillprevent
systemcontaminationfromenteringanddamagingthenewhydraulicmotor.
3.Cleanthejunctionofthehydraulichoseandleftelbowttingatthetopofthe
hydraulicpump(Figure78).Disconnectthehosefromtheleftpumptting.
4.ConnecttheT orohighowhydrauliclterinseriesbetweenthehydraulic
pumpttingandthedisconnectedhose.Usethehydraulichosekit(referto
HydraulicHoseKit(page5–40))toconnecttheltertothemachine.Ensure
thatthettingandhoseconnectionsareproperlytightened.
HydraulicSystem:ServiceandRepairs
Page5–82
Groundsmaster
®
3280-D/3320
05138SLRevB