g218966
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
RILL
/S
ETUP
switch to the D
RILL
position, and raise the pipe elevators, so that the
pipe is resting on the elevators; refer to
the First Pipe (page 57)
.
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
Starting the First Pipe (page
.
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
RILL
/S
ETUP
switch to the
DRILL
position, and raise the pipe elevators, so that the
pipe is resting on the elevators; refer to
the First Pipe (page 57)
.
2.
Switch the D
RILL
/S
ETUP
switch to the
SETUP
position, lower the thrust frame, tilting the drill
frame until the plate contacts the ground (
g218964
Figure 60
1.
Thrust frame
2.
Stake-down plate
3.
Lower the rear stabilizers until they contact the
ground firmly, or until the desired entry angle is
achieved (
Note:
The rear of the tracks should just start to
lift off the ground.
Note:
If the ground is soft, place timber below
the stabilizers and lower the stabilizers.
g218941
Figure 61
4.
Deploy the zap-alert system; refer to
the Zap-Alert System (page 51)
5.
Push the lower stake direction on the right
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
•
Loosens the soil into which the drill is cutting
•
Penetrates and binds loose soil to keep them from
collapsing on the bore pipe.
The specific mixture you need will vary depending on
your soil type and the operation you are performing;
52
Summary of Contents for 2226
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