Toro Groundsmaster 4300-D - Page 221

DisassemblingtheSteeringCylinder(continued)
5.Holdtheendofthefrontshaftanduseatwistingandpullingmotionto
carefullyextracttherearshaft,piston,frontshaft,andfrontheadassembly
fromthebarrel.
6.Removethecylinderfromthevise.
IMPORTANT
Whenremovingtherollpinfromthefrontandrearshafts,ensure
thattheshaftsurfacesarenotdamaged.
7.Removeanddiscardtherollpin(item7inFigure121)thatsecuresthefront
shafttotherearshaft.Then,removetherearshaft,piston,andfronthead
fromthefrontshaft.
8.Removeanddiscardtheseals,O-rings,andwearringfromthepistonand
heads.
InspectingtheSteeringCylinder
CAUTION
Useeyeprotectionsuchasgoggleswhenusingcompressedair.
1.Washallthecylindercomponentsincleansolventanddrythemwith
compressedair.
2.Inspecttheinternalsurfaceofthebarrelfordeepscratches,out-of-roundness,
andbending.
3.Inspectthehead,shaft,andpistonforexcessivepitting,scoring,andwear.
4.Replacethesteeringcylinderiftheinternalcomponentsarewornor
damaged.
AssemblingtheSteeringCylinder
1.Useanewsealkitandreplacealltheseals,O-rings,andwearringtothe
pistonandheads.Applycleanhydraulicuidtoallthesealkitcomponents
beforeyouinstallthem.
Note:Donotdamagetheheadsealsduringinstallation.
2.Installthefronthead(item17inFigure121)withnewsealsontothefront
shaft.
IMPORTANT
EnsurethatyoudonotdamageO-ring(item6inFigure121)as
pistonisinstalledovertherollpinholeinthefrontrod.
3.Installthepiston(item14inFigure121)withnewseal,O-ring,andwear
ringontothefrontshaft.
Groundsmaster
®
4300-D
Page4–159
HydraulicSystem:ServiceandRepairs
16226SLRevC