Ditch Witch JT20 - Manual (Page 134)

JT20 Operator’s Manual
Systems and Equipment - 133
Drill Pipe
CMW
®
Drill Pipe
Perform Regular Drill Pipe Care
Precondition New Pipe
Repeat this procedure three times for each piece of pipe before it is used the first time:
1. Hand-lubricate entire surface of threads and shoulders of both ends of pipe with copper base tool
joint compound. See page 159 for correct lubricant.
2. Join pipe and tighten joint.
3. Break joint.
4. Move pipe back to box.
Lubricate Joints Before Each Use
Lubricate threads and shoulders of male joints with copper base tool joint compound. This prevents rust
and reduces wear on shoulders and threads. See page 159 for correct lubricant.
Clean the Threads
Clean the threads as needed with high-pressure water and detergent.
Replace Worn Saver Sub
Because each pipe comes in contact with the saver sub, check saver sub regularly for wear. Compare
condition of saver sub threads to condition of your drill pipe threads. Replace saver sub any time when its
thread condition is not better than thread condition of your drill pipe. Failing to replace saver sub will result
in damaged drill pipe. See page 191 for replacement procedure.
Precondition a new saver sub the same way you do new pipe. See “Precondition New Pipe” on page 133.
Rotate Pipe Order
Because the lead drill pipe is in the ground longer, it is subjected to higher shock loads and experiences
more wear. To help spread this wear evenly over all pipe, move the lead pipe from the previous job out of
the first position. See “Rotate Drill Pipe Order” on page 138.
NOTICE: Failure to follow this procedure could result in fused joints. Pipe will be damaged or destroyed.
NOTICE: Do not use gasoline or other petroleum-based solvents. This prevents tool joint compound
from sticking to the joints and will reduce thread life.