Case 580T - Page 209

6-WORKINGOPERATIONS
Trenching
Trenchingisthemostbasicbackhoeexcavatingopera-
tion.
Otherdiggingoperationsaremerelyvariationsofthisba-
sicfunction(llingthebucket,dumpingthebucketand
movingthemachineforward).
Whiletrenching,itisgenerallyimportanttomaintaina
leveltrenchbottom.Thisisaccomplishedbysettingthe
bucketatthecorrectangleofapproach.
Pullonthedipperlevertomaintainthecorrectcuttingan-
gleasthebucketiscrowdingin(1)applyinglightpressure
totheright.
Atthesametime,pullontheliftlever(2)torelievedown
pressureandkeepthebucketinthesameplane.
Continuethetrenchbymovingforward.Movingtoofarwill
requireexcessivedownpressurefordigging,plushand
cleanupofthetrenchbottom.
LEEN11T0185AA_17
LEEN11T0186AA_28
Whenusingthebackhoeattachmentfordiggingon
slopes,ifpossible,positiontheattachmentuphill.How-
ever,ifthisisnotpracticable,usetheloaderorbackhoe
attachmenttocutalevelsurfaceintotheslopeforthe
uphillwheelandstabilizer,anddepositthespoilfromthe
slotontothedownhillsidefortheoppositewheeland
stabilizer.
Whendiggingalwaysdepositthespoilfromthetrenchon
theuphillside.
NOTICE:Whenexcavatingacrossaslopeitisnotpossi-
bletomakeuseoftheloaderbucketforaddedstability.
Donotoverloadthebucketandavoidswingingaloaded
buckettothedownhillsideoftheslope.
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