TM 5-4220-231-14&P (6) Lubricate  new O-ring  (13),  M83248/2- 111,   with   silicone    compound (Item   9, Appendix D)   and     install    in    O-ring groove    on   lower   fitting  of  valve    (1). (7) Position and   tighten     lower   tube    (11) by   positioning and    tightening union nut   (12). Turn   union    nut   clockwise. (O-ring   (13)  is  between     tube   (11)  and valve    fitting). 12,13 J (8)    Replace the    following parts on    the 7 valve by   installing each in  the    order 6 listed: grounding spring (7),   handle (6),   stop plate    (5),   name plate    (4), 5 stem   spring (3),  and   stem    nut   (2). 2 3 4 (9)   Apply    pressure to   DACC Operate valve    through opening arc,   and leak- test with   nonionic detergent solution (NID)    GP (Item 17,    Appendix D). Correct leaks as   necessary. (10)    Reinstall and   secure the   DACC    panel in   the DACC    case with    all   securing screws. Replace and    secure case front   cover over DACC   panel. (11) Complete Reentry Control Report and Log. 7 4-14