Toro Groundsmaster
3500-D - Cutting Unit and Blade Plane; Inspecting and Adjusting Blade Plane

3.Removethelynchpinorretainingnutsecuring
thecuttingunitcarrierframetothelift-arm-pivot
pin(Figure70).
g031645
Figure70
1.Lynchpin
2.Lift-arm-pivotpin
4.Rollthecuttingunitawayfromthetractionunit.
MountingtheCuttingUnits
totheTractionUnit
1.Performthepre-maintenanceprocedure;refer
toPreparingtheMachineforMaintenance(page
38).
2.Movethecuttingunitintopositioninfrontofthe
tractionunit.
3.Slidethecuttingunitcarrierframeontothe
lift-arm-pivotpinandsecureitwiththelynchpin
orretainingnut(Figure70).
4.Usingthehydraulic-motor-mountingscrews,
installthehydraulicmotortothecuttingunit
(Figure69).
Note:EnsurethattheO-ringisproperly
positionedandnotdamaged.
5.Greasethespindle.
ServicingtheBladePlane
Therotarycuttingunitcomesfromthefactorypreset
at5cm(2inches)height-of-cutandbladerakeof7.9
mm(0.31inch).Theleftandrightheightsofcutare
alsopresettowithin±0.7mm(0.03inch)oftheother.
Thecuttingunitisdesignedtowithstandblade
impactswithoutdeformingthechamber.Iftheblade
strikesasolidobject,inspectthebladefordamage
andthebladeplaneforaccuracy.
InspectingtheBladePlane
1.Removethehydraulicmotorfromthecutting
unitandremovethecuttingunitfromthetraction
unit.
Note:Useahoist(oraminimumof2people)
andplacethecuttingunitonaattable.
2.Markanendofthebladewithapaintpenor
marker.
Note:Usethisendofthebladetocheckall
heights.
3.Positionthecuttingedgeofthemarkedend
ofthebladeatthe12o’clockposition(straight
aheadinthedirectionofmowing)andmeasure
theheightfromthetabletothecuttingedgeof
theblade(Figure71).
g011353
Figure71
4.Rotatethemarkedendofthebladetothe3
o’clockand9o’clockpositionsandmeasurethe
heights(Figure71).
5.Comparethe12o’clockpositionmeasured
heighttotheheight-of-cutsetting.
Note:Itshouldbewithin0.7mm(0.03inch).
The3o’clockand9o’clockheightsshouldbe
3.8±2.2mm(0.15±0.09inch)higherthanthe
12o’clocksettingandwithin2.2mm(0.09inch)
ofeachother.
Ifanyofthesemeasurementsarenotwithin
specication,proceedtoAdjustingtheBladePlane
(page57).
AdjustingtheBladePlane
Startwiththefrontadjustment(change1bracketata
time).
1.Removetheheight-of-cutbracket(front,left,or
right)fromthecuttingunitframe(Figure72).
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