CuttingUnits
BladeSafety
Awornordamagedbladecanbreak,andapiece
couldbethrowntowardyouorbystanders,resulting
inseriouspersonalinjuryordeath.
•Inspectthebladesperiodicallyforexcessivewear
ordamage.
•Usecarewhencheckingtheblades.Weargloves
andusecautionwhenservicingthem.Only
replacetheblades;neverstraightenorweldthem.
•Onmachineswithmultiplecuttingunits,take
carewhenrotatingacuttingunit;itcancausethe
bladesintheothercuttingunitstorotate.
ReplacingtheBlades
ServiceInterval:Yearly—Replacetheblades.
Tomaintainbalance,replacebladesonlyasan
opposedpairorawholerotoratatime.Alsoreplace
thebushing,thebolt,andthelocknutwhenyou
replaceablade.Thereare2servicekitsavailablefor
bladereplacement;refertothePartsCatalog.
1.Raisethecuttingunitsandsecurethemwiththe
transportlatches.
2.Engagetheparkingbrake,shutofftheengine,
andremovethekey.
3.Ifyouarereplacingbladesonthecentercutting
unit,removetheentirecuttingunitunlessan
overheadliftisavailable.
4.Turntherotorslowlybyhandsothateachrow
ofailsareinthedesiredpositionandyoucan
easilyaccessthem.
5.Usetherotorlockingtool(providedinthe
blade-sharpeningkit)tolocktherotor.
6.Removeanydebrisfromtheboltheadandthe
nutandcleantheprotrudingthreadswithawire
brush.
7.Markthepositionoftheboltheadsothatyou
canreplacetheboltsfromthesameside.
8.Holdingthebladeinaragorpaddedglove,
removethenut,bolt,bushing,andblade(Figure
74).
Note:Ifneeded,applypenetratingoiltothe
threadstomakethenuteasiertoremove.
g036878
Figure74
1.Nut3.Bushing
2.Bolt4.Blade
9.Discardtheblade,bushing,nut,andbolt.
10.Installanewbladeandbushingwithanewnut
andbladebolt(Figure74).
Note:Payattentiontothebolt-head-position
markingssothatyoureplacetheboltinthe
samedirection.
11.T orquethefastenersto45N∙m(33ft-lb).
CheckingtheBladeBolts
ServiceInterval:Every50hours
Makesurethatallbladeboltsaretorquedto45N∙m
(33ft-lb).
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