FilteringClosed−LoopTractionCircuit
Filteringofaclosed−loophydraulicsystemafteramajortractioncomponent
failure(e.g.traction(piston)pumporwheelmotor)isarequirementtoprevent
debrisfromtransmittingthroughoutthesystem.Ifaclosed−loophydraulic
systemlteringtoolisnotusedtoensuresystemcleanliness,repeatfailures,
aswellassubsequentdamagetootherhydrauliccomponentsintheaffected
system,willoccur.Toeffectivelyremovecontaminationfromclosed−looptraction
circuit,useoftheT orohighowhydrauliclterandhydraulichosekitsare
recommended(seeSpecialT ools(page2–15)).
1.Parkmachineonalevelsurface,lowercuttingdecksfully,disengagePTO
andstopengine.Removekeyfromkeyswitch.
2.Raiseandsupportmachinesoallwheelsareofftheground(seeJacking
Instructions(page1–6)).
Note:Ifwheelmotorwasreplaced,installhighowltertotheinletofthe
newmotorinsteadoftothepistonpumphose.Thiswillpreventsystem
contaminationfromenteringanddamagingthenewwheelmotor.
g287875
Figure78
1.Pistonpump
3.HosetoP2tting
2.Tractionmanifold
3.Thoroughlycleanjunctionofhydraulichosefrompistonpumpandelbow
ttingintheP2portonsideoftractionmanifoldwhichisattachedtothe
bottomofthefrontaxleframe(Figure78).Disconnecthosefromelbowtting.
4.ConnectT orohighowhydrauliclterinseriesbetweenmanifoldttingand
disconnectedhose.Usehydraulichosekit(seeSpecialT ools(page2–15))
toconnectltertomachine.Makesurethathoseconnectionsareproperly
tightened.
5.Afterinstallinghighowltertomachine,checkandllhydraulicreservoir
withnewhydraulicoilasrequired(seeOperator’sManual).
6.Startengineandrunatlowidlespeed.Checkforanyhydraulicleakagefrom
lterandhoseconnections.Correctanyleaksbeforeproceeding.
CAUTION
Allwheelswillbeoffthegroundandrotatingduringthisprocedure.
Makesuremachineiswellsupportedsoitwillnotmoveand
accidentallyfalltopreventinjuringanyonearoundmachine.
Groundsmaster
®
5900&5910
Page5–81
HydraulicSystem:ServiceandRepairs
16227SLRevB
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