Procedure, Drill head position, Jt30 /jt30 all terrain operator’s manual – Ditch Witch JT30AT User Manual
Page 118
JT30 /JT30 All Terrain Operator’s Manual
Conduct a Bore - 118
Correct Direction
CMW
Procedure
1.
Locate drill head. Take readings available with your beacon and locating equipment such as:
•
depth
•
pitch
•
left/right information
•
temperature
•
beacon roll
2.
Compare position to bore plan. Determine direction drilling should go.
3.
Position drill head.
4.
Drill in pipe.
Drill Head Position
The drill head position is determined by reading
beacon roll. Roll is displayed as a clock face position.
1.
Read beacon roll.
2.
Slowly rotate pipe until locator displays desired
beacon roll.
To change direction:
To move forward without changing direction:
IMPORTANT: In AT mode, depth
estimate improves if drill head is at 3
o’clock position (A) rather than
horizontal (B).
JT mode
AT mode
1.
Rotate pipe to clock position you intend to
travel.
2.
Push pipe into ground.
1.
Rotate outer pipe to clock position you intend
to travel.
2.
Engage spindle brake.
3.
Engage inner rotation and push pipe into
ground.
JT mode
AT mode
1.
Rotate pipe.
2.
Push pipe into ground.
1.
Rotate outer pipe.
2.
Engage inner rotation and push pipe into
ground.
A
B
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