TM 10-1670-287-23&P  0013 00  7.  Raise control lines and walk them down (ensuring there are no twists) to ensure they run free from  the A, B, C, and D lines.  8.  Ensure control lines run free through proper slider grommets, and then through proper control line  guide ring.  0013 00-5   Change 2  Control Lines  D Lines  C Lines  A and B Lines  Control  Line  Guide  Ring  Slider  Grommet Control  Line