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Figure 59
2.
Move the stake directly away from the machine,
perpendicular to the drill frame and drive it into
the ground until the handle touches the ground.
3.
If the ground is dry where you put the stake,
soak it with water before using the machine to
ensure good electrical contact.
Lowering the Stakes
Preparing the Machine to Lower
the Stakes
1.
Move the operator station to the desired angle,
switch the D
/S
RILL
position, and raise the pipe elevators, so that the
pipe is resting on the elevators; refer to
the First Pipe (page
2.
Remove the pipe box transport pins.
3.
Power on the exit-side lockout system.
4.
Load the first pipe and install the sonde and the
drill head; refer to
57).
5.
Place the drill head on the drill frame, and take
a pitch reading using the receiver; refer to the
Tracking System Operator's Manual.
Lowering the Stakes
1.
Move the operator station to the desired angle,
switch the D
/S
RILL
position, and raise the pipe elevators, so that the
pipe is resting on the elevators; refer to
the First Pipe (page
2.
Switch the D
RILL
position, lower the thrust frame, tilting the drill
frame until the plate contacts the ground
60).
switch to the D
ETUP
57).
Starting the First Pipe (page
switch to the
ETUP
DRILL
57).
/S
switch to the
ETUP
SETUP
1. Thrust frame
3.
Lower the rear stabilizers until they contact the
ground firmly, or until the desired entry angle is
achieved
Note:
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lift off the ground.
Note:
the stabilizers and lower the stabilizers.
4.
Deploy the zap-alert system; refer to
RILL
the Zap-Alert System (page 51)
5.
Push the lower stake direction on the right
Starting
joystick and spin the right stake auger until it
seats fully.
6.
Repeat this procedure for the left-side stake.
Connecting to a
Drilling-Fluid Source
When drilling and reaming, you pump a mixture
of bentonite clay, water, and sometimes other
ingredients, collectively called drilling fluid or "mud,"
through the pipe and into the bore. This drilling fluid,
or "mud," does the following for your bore:
•
Lubricates the drill head
•
Keeps the sonde cool
Starting
•
Loosens the soil into which the drill is cutting
•
Penetrates and binds loose soil to keep them from
collapsing on the bore pipe.
(Figure
The specific mixture you need will vary depending on
your soil type and the operation you are performing;
52
Figure 60
2. Stake-down plate
(Figure
61).
The rear of the tracks should just start to
If the ground is soft, place timber below
Figure 61
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Deploying
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