TM 5-4220-231-14&P (6) Lubricate new O-rings (22,23), M83248/2-116, with silicone compound (Item    9,    Appendix D). Install    O-rings     (22,    23)    on    posi- tionable     elbows     (20,   35). Position and   tighten   tube    (19)   to  elbow   (20) by  turning    union   nut   (21)   clockwise. 20 Tighten    tube    (19)   to   elbow   (35)   by 36 22 turning     union     nut    (36)    clockwise. 21 Note   that   for  clarity,    this   and   following 19 sketches do    not   show     panel     and 23 spacers. 35 (7) Lubricate new O-ring (14), M83248/2-111, with silicone compound (Item   9,  Appendix     D),  and 2 install   on   adapter     (12).     Position    and tighten   tube   (11)   to  adapter     (12)   by 14 tightening     union   nut  (13)   clockwise. -- 13 (8) Lubricate new O-ring (18), M83248/2-010, with silicone compound (Item    9,    Appendix D). Install    on    positionable elbow     (16). 16 Position     and    tighten    tube     (15)   to 18 adapter     (16)   by  tightening union   nut 17 (17). 15 (9) Lubricate new O-ring (10), M83248/2-111, with silicone compound (Item   9,  Appendix     D),  and install   on   adapter     (8).     Position    and tighten    tube    (7)   to   adapter     (8)   by turning    union   nut  (9). 8 10 --*' @ 2 2 19 4-97