Ditch Witch JT922 - Manual (Page 120)

JT922 Operator’s Manual
Systems and Equipment - 119
Drill Pipe
CMW
Make Up and Break Out Joints Correctly
• Make up and break out joints slowly. Do not ram pipes together during makeup or force them
apart during breakout. Carefully time rotation with carriage travel speed, and always connect and
disconnect joints slowly and deliberately. This will help prevent thread crossing, galling, and
shoulder swelling.
• Torque joints fully. Once the joint is connected and the shoulder faces are touching, torque them
to full machine torque. Improperly torqued joints will damage the shoulder faces and threads, and
will cause joints to leak or break while drilling or backreaming.
Do not Overwork the Pipe
Never exceed the bend radius for your pipe. See “Recommended Bend Limits” on page 58. Do not
oversteer.
NOTICE: Bending pipe more sharply than recommended will damage pipe and cause failure.