Conduct a Bore - 76 JT520 Operator’s Manual
Assemble Drill String
CMW
Attach Transition Sub
Use either machine torque or quick wrench to attach transition sub (2) to beacon housing (1).
Machine Torque
1. Apply tool joint compound to shoulders and threads and thread transition sub onto saver sub.
2. Align drill pipe flats of EZ-Connect box with front wrench of drill frame.
3. Start drilling unit engine.
4. Use machine power to slowly rotate spindle and transition sub onto EZ-Connect box.
5. Tighten to full machine torque.
Quick Wrench
1. Lube joints with TJC.
2. Attach quick wrench to the joint in the join position and tighten joint. See “Quick Wrench” on page 107.
Connect Drill Pipe
1. Start drilling unit engine.
2. Align transition sub in front wrench.
3. Load pipe.
4. Lubricate shoulders and threads.
5. Move carriage forward until saver sub nears male pipe thread.
6. Slowly rotate spindle clockwise. Carriage will move forward as threads screw together.
7. Slowly move carriage forward until pipe end touches end of transition sub.
8. To thread pipes together and fully torque joint, slowly rotate drill pipe until spindle stops turning.
9. Open front wrench and move carriage back.
10. Turn off engine.
Engage EZ-Connect
1. Apply tool joint compound to shoulders and threads and align hole in EZ-Connect collar with tapped
hole in EZ-Connect box.
2. Slide collar onto octagonal barrel and push toward wrench flats.
3. Thread tool head EZ-Connect pin into EZ-Connect box until shoulders are touching.
4. Back tool head off one flat and slide collar onto pin until retainer bolt hole is visible.
5. Lube retainer bolt with tool joint compound, install, and tighten.
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