Operator's Manual

15.Checkthehydraulicuidlevelandtopitoffif
necessary;refertoCheckingHydraulicFluid.
16.Cleanupanyspilleduid.
17.Installthetopcover.
CheckingtheHydraulicLines
ServiceInterval:Every100hours—Checkthe
hydrauliclinesforleaks,loose
ttings,kinkedlines,loosemounting
supports,wear,weather,andchemical
deteriorationandrepairifnecessary.
Every1,500hours/Every2years
(whichevercomesrst)—Replaceall
movinghydraulichoses.
Hydraulicuidescapingunderpressurecan
penetrateskinandcauseinjury.Fluidinjected
intotheskinmustbesurgicallyremovedwithin
afewhoursbyadoctorfamiliarwiththisform
ofinjuryorgangrenemayresult.
•Keepyourbodyandhandsawayfrompin
holeleaksornozzlesthatejecthighpressure
hydraulicuid.
•Usecardboardorpapertondhydraulic
leaks,neveruseyourhands.
TrencherMaintenance
ReplacingtheDiggingTeeth
ServiceInterval:Beforeeachuseordaily—Checkthe
conditionofthediggingteethand
replaceanythatarewornordamaged.
Duetothehighamountofwearplacedonthedigging
teeth,youwillneedtoreplacethemperiodically.
Toreplaceasingletooth,removetheboltssecuringthe
toothtoremoveit,theninstallanewtoothinthesame
position.Torquetheboltssecuringtheteethto27to33
ft-lb(37to45N-m).
CheckingandAdjustingthe
DiggingChainandBoom
ServiceInterval:Every25hours
•Checkeachlinkinthechainforexcessivewear,such
aslinksthatwillnolongerholdteeth.
•Inspectthebottomoftheboomforwear
•Withthetrencherparalleltotheground,ensure
thatthereare1-1/2to2-1/2inches(3.8to6.3cm)
betweenthebottomoftheboomandthetopofthe
bottomchainspan.Ifnotadjustthechaintension.
Important:Donotovertightenthechain.
Excesschaintensionmaydamagedrive
components.
Toreplaceawornchain,iporreplaceawornboom,or
toadjustthechaintension,usethefollowingprocedure:
1.Toreplacethechainortoiporreplacetheboom,
completethefollowing:
A.Removethe2boltsandnutssecuringtheboom
tothetrencherarm
Figure60
1.Bolts
2.Jamnut
3.Adjustingbolt
40