Toro Groundsmaster 4500-D - Cutting Unit Maintenance; Removing and Installing the Cutting Units

CuttingUnitMaintenance
RemovingtheCuttingUnits
1.Parkthemachineonalevelsurface,engagethe
parkingbrake,lowerthecuttingunits,shutoff
theengine,andremovethekey.
2.Disconnectandremovethehydraulicmotor
fromthecuttingunit(Figure124).Coverthetop
ofthespindletopreventcontamination.
g011351
Figure124
1.Motor-mountingscrews
3.Removethelynchpin(forGroundsmaster4500
machines)orretainingnut(forGroundsmaster
4700machines)securingthecuttingunit-carrier
frametothelift-armpivotpin(Figure125).
g011352
Figure125
1.Lynchpin
2.Lift-armpivotpin
4.Rollthecuttingunitawayfromthemachine.
InstallingtheCuttingUnits
1.Movethecuttingunitintopositioninfrontofthe
machine.
2.Slidethecuttingunit-carrierframeontothe
lift-arm-pivotpin(Figure125).Securethe
cuttingunittothepinwiththelynchpin(for
Groundsmaster4500machines)orretainingnut
(forGroundsmaster4700machines).
3.Installthehydraulicmotortothecuttingunit
(Figure124).MakesurethattheO-ringisin
positionandnotdamaged.
4.Greasethespindle.
ServicingtheFrontRoller
Inspectthefrontrollerforwear,excesswobble,or
binding.Serviceorreplacetherollerorcomponentsif
anyoftheseconditionsexist.
DisassemblingtheFrontRoller
1.Removetheroller-mountingbolt(Figure126).
2.Insertapunchthroughtheendoftheroller
housinganddrivetheoppositebearingoutby
alternatingtapstotheoppositesideofinner
bearingrace.Thereshouldbea1.5mm(0.060
inch)lipofinnerraceexposed.
g011356
Figure126
1.Frontroller3.Bearing
2.Mountingbolt4.Bearingspacer
3.Pushthesecondbearingoutinpress.
4.Inspecttherollerhousing,bearings,andbearing
spacerfordamage(Figure126).Replaceany
damagedcomponentsandassemblethem.
84