Toro 30602 - Re-Tensioning the Blade Drive Belts; Replacing the Blade Drive Belt

Re-tensioningtheBladeDrive
Belts
ServiceInterval:Aftertherst10hours
Every50hours
Checktheconditionandtensionofthecuttingunitdrivebelts
initiallyafter10hoursofoperationandevery50operating
hoursthereafter.
Whenproperlytensioned,theextensionspring(hookto
hook)measurementshouldbeapproximately8.9cm±.63
cm(3.50±.25inch)(inside).Oncethecorrectspringtension
isattained,adjustthestopbolt(carriagebolt)untilthere
isapproximately.32cm±.152/.000cm(.125+.060/-.000
inch)clearancebetweentheheadoftheboltandtheidler
arm(Figure70).
Note:Makesurethebeltispositionedonthespringside
ofthebeltguide(Figure70).
Figure70
1.Belt4.Beltguide
2.Eyebolt5.Flangenut
3.Extensionspring
6.Stopbolt
ReplacingtheBladeDriveBelt
ServiceInterval:Every800hours
Thebladedrivebelt,tensionedbythespringloadedidler
pulley,isverydurable.However,aftermanyhoursofuse,
thebeltwillshowsignsofwear.Signsofawornbeltare:
squealingwhenbeltisrotating,bladesslippingwhencutting
grass,frayededges,burnmarksandcracks.Replacethebeltif
anyoftheseconditionsareevident.
1.Lowerthecuttingunittotheshopoor.Removethe
beltcoversfromthetopofthecuttingunitandsetthe
coversaside.
2.Loosentheeyeboltallowingtheremovalofthe
extensionspring(
Figure70).
3.Loosentheangenutsecuringthestopbolttothe
mountingtab.Backoffthenutenoughtoallowthe
idlerarmtopassbythestopbolt(Figure70).Movethe
idlerpulleyawayfromthebelttoreleasebelttension.
Note:Ifthestopboltiseverremovedfromthe
mountingtab,makesureitisreinstalledintheholethat
alignsthestopboltheadwiththeidlerarm.
4.Removetheboltssecuringthehydraulicmotortothe
cuttingunit(Figure71).Liftthemotoroffofthe
cuttingunitandlayitontopofthecuttingunit.
Figure71
1.Hydraulicmotor2.Mountingbolts
5.Removetheoldbeltfromaroundthespindlepulleys
andidlerpulley.
6.Routethenewbeltaroundthespindlepulleysandidler
pulleyassembly.
7.Positionthehydraulicmotoronthecuttingunitafter
routingthebeltaroundthepulleys.Mountthemotor
tothecuttingunitwiththeboltspreviouslyremoved.
Note:Makesurethebeltispositionedonthespring
sideofthebeltguide(
Figure70).
8.Reconnecttheextensionspring(Figure70)totheeye
boltandtensionthebeltasfollows:
•Whenproperlytensioned,theextension
spring(hooktohook)measurementshouldbe
approximately8.9cm±.63cm(3.50±.25inch
(inside).
•Oncethecorrectspringtensionisattained,
adjustthestopbolt(carriagebolt)untilthere
isapproximately.32cm±.152/.000cm(.125
+.060/-.000inch)clearancebetweentheheadof
theboltandtheidlerarm.
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