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Systems and Equipment - 118<br />
JT5 Operator’s <strong>Manual</strong><br />
Drill Pipe<br />
Use Caps and Plugs<br />
Before transporting in dusty conditions or prolonged<br />
storage, install caps and plugs to male and female<br />
ends of pipe and to saver sub.<br />
Replace Worn Saver Sub<br />
Because each pipe comes in contact with the saver sub, check saver sub regularly for wear. Replace it<br />
when it is worn, or it will damage your drill pipe. See page 149 for replacement procedure.<br />
Precondition a new saver sub the same way you do new pipe. See “Precondition New Pipe” on page 117.<br />
Rotate Pipe Order<br />
Because the lead drill pipe is in the ground longer, it is subjected to higher shock loads and experiences<br />
more wear. To help spread this wear evenly over all pipe, move the lead pipe from the previous job out of<br />
the first position. See “Rotate Pipe Order” on page 118.<br />
CMW
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