Toro Groundsmaster 5910 Series - Page 232

SteeringControlValveRemoval(Figure116)
1.Parkmachineonalevelsurface,lowercuttingdecksfully,disengagePTO
andstopengine.Removekeyfromthekeyswitch.
2.ReadtheGeneralPrecautionsforRemovingandInstallingHydraulicSystem
Components(page5–73).
3.Removethesteeringcoverandslidethesteeringcolumnbootupward(see
SteeringColumn(Formachinesserialnumberbelow403450000)(page
7–5)).
4.Topreventcontaminationofhydraulicsystemduringsteeringvalveremoval,
thoroughlycleanexteriorofsteeringvalve,hydraulictubesandttings.
Note:Accesstohydrauliclinettingsmayrequireremovalofvefasteners
securingtractionpedalassemblytoOperatorplatform(seeTractionPedal
(page7–37)).
5.Disconnecthydraulictubesfromsteeringcontrolvalve.Putcapsorplugson
ttingsandtubestopreventcontamination.Taghydrauliclinesforproper
assembly.
6.Supportsteeringcontrolvalveandsteeringcolumntopreventthemfrom
falling.
7.Removefour(4)capscrewsthatsecuresteeringcontrolvalveandsteering
columntomachine.Slidesteeringcontrolvalvefromlowerendofsteering
shaftandremovesteeringcontrolvalveandsteeringcolumnfrommachine.
8.Locateandremovealignmentbushing(item18).
9.Ifnecessary,removettingsfromcontrolvalveanddiscardttingO−rings.
Plugcontrolvalveportstopreventcontamination.
SteeringControlValveInstallation(Figure116)
4
1
2
3
5
g288152
Figure117
1.Inport−P
4.Outport−T
2.Rightturnport−R
5.Leftturnport−L
3.Loadsensingport−E
1.Ifttingswereremovedfromsteeringcontrolvalve,lubricateandplacenew
O−ringsontottings.Removeplugsinstalledduringremovalandinstall
ttingsintocontrolvalve(seeInstallingtheHydraulicFittings(SAEStraight
ThreadO-RingFittings)(page5–9)).
2.Applyneverseizelubricanttosplinesonlowerendofsteeringcolumn.
HydraulicSystem:ServiceandRepairs
Page5–132
Groundsmaster
®
5900&5910
16227SLRevB