5.Withthepersonguidingtheboringbitpositionedto
therightofthetrench(Figure5),starttheengine,
movethepumpselectorvalvetoslow(turtle)(200and
300seriestractionunitsonly),positionthethrottle
towithinthemiddleoftherpmrange,andpullthe
auxiliaryhydraulicsleverrearwardtostarttheforward
rotationoftheboringbit.
6.Slowlymovethetractionunitforward,whiletheperson
withtherod-guidetoolguidestheboringbitintothe
soil(Figure5).
7.Oncetheentiredrillbitisinthesoil,pushtheauxiliary
hydraulicsleverintoneutral.
8.Stoptheengineandwaitforallmovingpartstostop.
9.Iftherodisnotwithinthegradetolerancesforthejob
beingperformed,starttheengineanddrivebackward
topulltheboringbitoutofthesoil,thenrepeatsteps5
through9,makingadjustmentstocorrectthegrade.
10.Removetherod-guidetool.
11.Starttheengineandpulltheauxiliaryhydraulicslever
rearwardtostarttheboringbit.
12.Slowlymovethetractionunitforwardastheboring
bitdigsintothesoil.
Important:Donotdrivetoofast,forcingthebit
intothesoil.Allowthebittoprogressatitsown
rate.Neverpushorpullthebitthroughthesoil
whenthedriveheadisnotturning.
13.Whenabout15cm(6inches)ofrodareleftshowingin
theentrancetrenchorwhentheboringbitcompletely
entersandboresintothefarsideoftheexittrench,
stopthetractionunit,pushtheauxiliaryhydraulics
leverintoneutral,andstoptheengine.
14.Iftheboringbithasnotyetenteredtheexittrench,
completethefollowing:
A.Detachtherodfromthedrivehead.
B.Starttheengineandbackuptotheendofthe
entrancetrench.
C.Stopengineandwaitforallmovingpartstostop.
D.Connectanotherrodandrepeatsteps11through
14.
ReamingtheHole
1.Withashovel,carefullydigaroundtheboringbit,
clearingitofsoiluntilitcanberemoved(Figure6).
g008478
Figure6
1.Sidewalkordriveway4.Reamer
2.Exittrench5.Swivel
3.Shoveldug-outarea
aroundbit
2.Removetheboringbitandattachthereamer(Figure6).
3.Attachthecableorpipingbeinginstalledtotheswivel
ontheendofthereamer(Figure6).
4.Starttheengineandpulltheauxiliaryhydraulicslever
rearwardtostartthereamer.
5.Slowlymovethetractionunitrearwardasthereamer
digsintothesoil.
Important:Donotdrivetoofast,forcingthe
reamerintothesoil.Allowthereamertoprogress
atitsownrate.Neverpushorpullthereamer
throughthesoilwhenthedriveheadisnotturning.
6.Whenarodcouplingisabout15cm(6inches)into
theentrancetrenchorwhenthereamercompletely
entersthetrenchwithabout15cm(6inches)ofthe
cableorpiping,stopthetractionunit,pulltheauxiliary
hydraulicsleverintoneutral,andstopengine.
7.Ifthereamerhasnotyetenteredtheexittrench,
completethefollowing:
A.Detachtherodfromthedriveheadandrodstill
inthesoil.
B.Starttheengineandmovetothefrontofthe
entrancetrench.
C.Stoptheengineandwaitforallmovingpartsto
stop.
D.Connectthedriveheadtotherodshaftinthesoil.
E.Repeatsteps4through7.
8.Withthereamerandcable/pipingintheentrance
trench,removethecableorpipingfromthereamer.
7
