JT40/JT40 All Terrain Operator’s Manual Conduct a Bore - 129
Drill First Pipe
Drill First Pipe
AT Mode
1. Turn on drilling fluid.
2. Visually check for drilling fluid flow.
3. Turn drill outer pipe to starting position.
4. Rotate inner spindle clockwise.
5. Slowly move carriage forward. Drill first pipe as straight as possible.
6. Monitor gauges.
• If inner rotation torque approaches 800 ft•lb (1080 N•m), slow carriage travel.
• If inner rotation stalls, stop carriage thrust. If inner rotation does not resume, pull pipe back.
AT Dirt/JT Mode
1. Turn on drilling fluid.
2. Visually check for drilling fluid flow.
3. Turn drill bit to starting position.
4. Slowly move carriage forward. Drill first pipe as straight as possible.
5. Monitor gauges.
Turning shaft will kill you or crush arm or leg. Stay away.
To help avoid injury:
• Keep everyone at least 10’ (3 m) away from turning drill string.
• Push pipe slowly. Forcing can bend string. Do not use bent pipe.
Jobsite hazards could cause death or serious injury. Use
correct equipment and work methods. Use and maintain proper safety
equipment.
274-050; 274-724 (2P).
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