Bradco 511 - BASIC DIGGING TECHNIQUE

OPERATING INSTRUCTIONS
6880 1-25-06-2
OPERATING TECHNIQUES
ATTACHMENT TYPE BACKHOES
BASIC DIGGING TECHNIQUE
 Whenstartinganexcavation,maketherstcutofeachsectionshallow,beingcarefulto
followtheexactlayoutoftheexcavation.Thereasonfortheshallowcutistominimizedam-
agetothesodandtofacilitatereplacement.Theserstcutsarealsoimportantbecausethey
willactasguidesfortheremainingcuts,thusgettingtherstfewcutsasaccurateaspossible
willhelpinkeepingallfuturecutsaccurate.
 Whendiggingwiththebackhoe,extendtheboom,dipperandbucketout,awayfromthe
operator.Lowertheboomanddippertostartthediggingprocess.Thebucketteethshouldbe
ata30°to45°entryangle.Asthediggingstarts,curlthebucketuntilthecuttingedgeislevel
withthehorizon.Crowdthebucketintowardtheoperatorworkingthebucketlevertokeepthe
bucketlevel.Asthebucketmovestowardtheoperator,manipulatetheboomlevertokeepthe
cutlevel.Attheendofthediggingcycle,crowdthedipperoutandcompletelycurlthebucket
whileliftingitfromtheexcavation.Onceyouhaveclearedtheexcavation,swingthebucket
tothespoilpile.Starttodumpthebucketbeforethepileisapproached.Oncethebucketis
empty,swingtheunitbacktotheexcavation,positioningthebucketanddipperforthenextcut
intheprocess.Thewholediggingprocessshouldbeonesmoothcyclethatisrepeateduntil
theexcavationiscompleted.
 Whentheexcavationhasbeendugtowithinsixinchesofthenishedbottom,clearand
touchupthesidesoftheexcavation.Usetheatsidesofthebuckettoscrapeoffanyhigh
spots.Dislodgeanyexposedrocksiftheyseemloose.Whennishingwalls,nishthefar
wallbycurlingthebucketout,crowdingthedipperout,andforcingthebucketdown.Tonish
theclosestwall,liftthebucketupandcurlitin.
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