TM   5-4220-231-14&P 4-8. Bleed    valve    (DACC). This    task    covers: Replace INITIAL   SETUP Tools Equipment Conditions General Mechanics Tool   Kit Remove front   cover    from    DACC    case     (Para.     3-15    1-2) O-ring    Installation and    Removal Tool Remove rear    DACC   panel     (Para. 3-15 3) Materials/Parts Reference Valve,    Ball   1322ZPE4597-8 Para    4-2,    General O-ring,    M83248/2-010 (2) O-ring,    M83248/2-904 (1) Silicone    Compound (Item   9,  Appendix D) Nonionic Detergent Solution     (NID)   GP (Item   17,   Appendix D) a. Remove (1) Determine the location of   the    bleed BLEED valve to   be removed and replaced VALVE (on   back    panel). / 0 0 0 0 0 01 0 0 (2) Remove tube (9)   from positionable elbow (8)  by   positioning a  wrench on both the union nut (10) and the 8 elbow (8).   Turn    union nut   (10)   coun- terclockwise. Remove, cut, and dis- card O-ring (11)    between elbow (8) 10,11 and    tube    (9). 9 __8 Change 1 4-23