Toro Groundsmaster 3320-D - Mounting the Cutting Unit to the Traction Unit; Servicing the Bushings in the Castor Arms

MountingtheCuttingUnitto
theTractionUnit
1.Positionthemachineonalevelsurfaceandshutthe
engineoff.
2.Movethecuttingunitintopositioninfrontofthe
tractionunit.
3.SlidethemalePTOshaftintothefemalePTOshaft
(
Figure27).
4.MovetheliftlevertotheFloatposition.Pushalift
armdownuntiltheholesintheliftarmlineupwith
theholesinthecastorarmbracketandtheheight
ofcutrodcanbeinsertedintotheliftarmpads
(
Figure28).
Figure28
1.Liftarm
7.Hairpincotter
2.Castorarmbracket8.Height-of-cutcollar
3.Height-of-cutrod9.Clevispin
4.Liftarmpads
10.Hairpincotter
5.Thrustwashers11.Bolt
6.Clevispin
5.Securetheliftarmtothecastorarmwith(2)thrust
washers,aclevispinandahairpincotter.Position
thethrustwashersbetweentheliftarmandthe
castorarmbracket(Figure28).Insertendofcotter
pinintotheslotinthecastorarmtabtoretaincotter
pin.
6.Repeattheprocedureontheoppositeliftarm.
7.Startthetractionunitandraisethecuttingunit.
8.Pushdownontherearofthecuttingunitandinsert
theheightofcutrodsthroughtheliftarmpads.
9.Installtheheightofcutcollarsontotheheightof
cutrodsandsecurewiththeclevispinsandhair
pincotters(
Figure28).Headofclevispintobe
positionedtowardthefrontofthedeck.
10.Installa1/2x3/4inchboltandawashertotopof
eachheightofcutrod(
Figure28).
ServicingtheBushingsinthe
CastorArms
Thecastorarmshavebushingspressedintothetopand
bottomofthetubeandaftermanyhoursofoperation,
thebushingswillwear.Tocheckthebushings,movethe
castorforkbackandforthandfromsidetoside.Ifthe
castorspindleislooseinsidethebushings,thebushings
arewornandmustbereplaced.
1.Raisethecuttingunitsothatthewheelsareoffof
theoor.Blockthecuttingunitsothatitcannot
accidentallyfall.
2.Removethetensioningcap,spacer(s),andthrust
washerfromthetopofthecastorspindle.
3.Pullthecastorspindleoutofthemountingtube.
Allowthethrustwasherandspacer(s)toremainon
thebottomofthespindle.
4.Insertapinpunchintothetoporbottomofthe
mountingtubeanddrivethebushingoutofthetube
(
Figure29).Alsodrivetheotherbushingoutofthe
tube.Cleantheinsideofthetubestoremovedirt.
Figure29
1.Castorarmtube
2.Bushings
21