Toro 4045 - Operation Procedures; Understanding Horizontal Directional Drilling Process; Gathering Essential Site Information; Planning the Bore Path Strategy

Important:UseonlyToroapprovedattachments.
Otherattachmentsmaycreateanunsafeoperating
environmentordamagethetractionunit.
Operation
Note:Determinetheleftandrightsidesofthemachine
fromthenormaloperatingposition.
UnderstandingHorizontal
DirectionalDrilling
Horizontaldirectionaldrillingisaprocessusedfordrilling
ahorizontalborethroughthesoilandunderobstructions
suchasroads,buildings,bodiesofwater,etc.Onceyoudrill
thebore,youpullbacktheutilitylinesorpipesthroughthe
boreandconnectthemasneeded.Becauseitdoesnotgreatly
disturbthesurface,installingutilitiesusingdirectionaldrilling
preservestheenvironmentandsavesbothtimeandmoney
overtraditionalinstallationmethodssuchastrenching.
Installingcablingorpipeusingadirectionaldrillinvolvesthe
followingsteps:
1.Gathersiteinformation.
Beforeoperatinginanareawithhigh-voltagelinesor
cables,contactaOne-CallSystemDirectoryservice.
IntheUSA,call811oryourlocalutilitycompany.If
youdonotknowyourlocalutilitycompany’sphone
number,callthenationalnumber(USAandCanada
only)at1-888-258-0808.Also,contactanyutility
companiesthatarenotparticipantsoftheOne-Call
SystemDirectoryservice.PleaserefertoDrillingNear
UtilityLines(page6)formoreinformation.
Beforefullyplanningthebore,gatherinformation
aboutthejobsite,suchasthelocationofotherutilities,
obstaclesatthesite,andthepermitsyouwillneedto
completethejob;refertoGatheringSiteInformation
(page48).
2.Planthebore.
Beforeyoudrill,plantheborepathbasedonthe
informationthatyougathered;refertoPlanningthe
BorePath(page51).
3.Preparethejobsiteandthemachine.
Beforedrilling,preparethejobsitewithanentrypoint,
adepth-gaugehole(optional),andanexithole.You
alsoneedtodrivetheunittothesite,setitupfor
drilling,andconnectittoadrilling-uidmixer.
Note:Whendrilling,youconnectthemachinetoa
drilling-uidmixerthatmixeswaterwithbentonite
clayandotheringredients.Themachinepumpsthis
mixture,referredtoasdrillinguidor“mud”,through
thedrillpipeandoutthedrillbit.Thedrillinguid
lubricatesthebit,helpstoholdtheboreopenwhile
drilling,andmixeswiththespoils,ushingthemout
oftheborethroughtheentrypoint.
RefertoPreparingtheJobSiteandtheMachine(page
58)forinstructionsonpreparingthejobsiteandthe
machine.
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