Toro ProLine H800 - Page 181

RemovingtheSteeringControlValve
1.Parkthemachineonalevelsurface,lowerthecuttingdeck,shutoffthe
engine,settheparkingbrake,andremovethekeyfromthekeyswitch.
2.Removethesteeringcolumncomponentstogetaccesstothesteering
controlvalve;refertoRemovingtheSteeringColumn(page7–9).
3.ReadtheGeneralPrecautionsforRemovingandInstallingtheHydraulic
SystemComponents(page5–63).
4.Forassemblypurposes,labelallthehydraulicconnections.Notetheport
designationsonthesteeringcontrolvalve.
5.Cleanthehydraulicconnectionsbeforelooseningthehydrauliclines.
g293899
Figure89
1.Ttting8.Heightofcutvalve
2.Hose9.Fitting
3.Fitting
10.Hose
4.Hose11.Hose
5.Hose
12.Steeringcylinder
6.Hydrauliccontrolvalve
13.O-ring
7.Auxiliarycontrolvalve14.Fitting
CAUTION
Beforeopeningthehydraulicsystem,operateallthehydraulic
controlstoreleasesystempressureandavoidinjuryfromthe
pressurizedhydraulicuid;refertoReleasingPressurefromthe
HydraulicSystem(page5–5).
6.Disconnectthehydrauliclinesfromthesteeringcontrolvalve.Allowthe
uidtodrainintoasuitablecontainer.
7.Installcleancapsorplugsonthehydrauliclinesandttingstoprevent
contamination.
8.Removethesteeringcontrolvalvefromthesteeringcolumnbyusingthe
Figure88asaguide.
9.Ifnecessary,removethehydraulicttingsfromthesteeringcontrolvalve.
10.RemoveanddiscardtheO-ringsfromthettings.
ProLineH800
Page5–113
HydraulicSystem:ServiceandRepairs
19241SLRevB