JT100/JT100 All Terrain Operator’s Manual Conduct a Bore - 131
Surface Drill Head
Surface Drill Head
1. Guide drill head to target pit or up through surface. Make all bends gradual. See “Recommended Bend
Limits” on page 88.
2. Clean area around exit point.
3. If using DrillLok mode, tracker operator turns off DrillLok remote button to disable drilling unit thrust/
pullback and rotation hydraulics. Tracker operator waits for green light on drilling unit and visual
indicator on DrillLok-enabled units to enter pit and change tools.
If not using DrillLok mode, tracker operator signals to drilling unit operator to stop engine before
changing downhole tools.
4. Turn fluid flow control to off position as soon as drill head emerges.
5. Clean drill head especially around threads.
6. Disconnect EZ-Connect joint or use Hydratong wrenches to remove drill head. Keep threads clean.
See “Hydratong Wrenches” on page 168.
Moving tools will kill or injure. Never use pipe wrenches
on drill string.
273-278
Turning shaft will kill you or crush arm or leg. Stay away.
To help avoid injury:
• Tracker operator and drill operator should maintain two-way communication.
• Keep everyone clear of the exposed drill string.
• No one should enter pit until clear communication is given by the drill operator that the drill unit is
shut down. If using DrillLok
®
mode, do not enter pit until DrillLok mode is turned off and green light
on drill unit is lit.
• Drill operator should be instructed to discontinue drill string rotation as soon as drill bit exits the
bore. Use thrust only to extend drill string beyond exit hole.
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