Case 590ST - Page 187

6-WORKINGOPERATIONS
Raisetheloaderhighenoughtoclearanyobstruction
priortodumpingtheload.
Afterthebucketisdumped,backawaywhileloweringand
levelingthebucket,usingthereturn-to-digfeatureifre-
quired.
Duringhardsurfaceoperation,placetheloaderattach-
mentleverin“oat”positionandkeepthebucketlevel.
Thiswillpermitthebucketto“oat”onthecontourofthe
workingsurface.
Ifhydraulicdownpressureisexerted,thebucketwillwear
fasterthannormal.
The“oat”positionwillpreventthemixingofsurfacema-
terialwithstockpilematerial.
Itwillalsoreducethechanceofsurfacegougingwhen
removingsnoworothermaterial.
Whenloadingfromabankselectthehighestforwardgear
whichwillprovidethemostefcientloadingoperation
withoutgoingintoa“stall”.
Keeptheworkingareafreeofrutsandholesoccasionally
backgradingwiththebucketusingthelowrearedgeof
thebucket.
LEEN11T0155AA4
Forsitestrippingpeelingorscraping,usedownpressure
withtheloaderattachmentleverintheloweredposition,
andaslightbucketangletostartthecut.Beginthecutat
thenotchapproximately50m(1.96in)deepandholdthe
depthbyfeatheringthebuckettoadjustthecuttinglipup
ordownasrequired.
Whenthemachinefronttiresenterthecut,adjustthelift
armstomaintainthecorrectdepth.
Makeadditionalcutsuntilthedesireddepthisreached.
Backgradetheworkingareaoccasionallywiththebucket
atandslightdownpressuretokeeptheworkingarea
smoothandfreefromrutsorholes.
Iftheloaderattachmentleverismovedforliftcylinderac-
tionwithoutcontrollingthebucketangle,thebucketmay
gougeandleaveaseriesofrutsinthesurface.
LEEN11T0156AA5
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