TM 5-4220-231-14&P NOTE Clean     non-metal parts    with  clean     rags    (Item    15,   Appendix D),  or  use isopropyl alcohol     (Item    1  or  2,  Appendix D)  followed     by  a   thorough rinse    in  clean     water    (Item    10,   Appendix D).  Any  other    solvents may cause damage to  parts. a.   Disassembly Instructions (1)     Unscrew    body    (10)  from  housing    (2). (2) Remove     seat    (7)  with  O-rinq   (8)  and   bushing     (9)  from  body   (10). (3) Remove, cut,   and    discard    O-ring    (8). (4) Remove     spring    retainer    (3),  spring   (4),  bushing     (5),  and   spacer     (6)  from  housing    (2). b.   Reassembly Instructions (1)    Insert    spring    retainer (3),  spring    (4),   bushing     (5)  and   spacer (6)   in housing     (2).   Make   certain shoulder of    bushing (5)  is toward     spring    (4). (2)    Insert    bushing (9)  on   body   (10).    Make   certain shoulder of  bushing (9)  is  toward    shoulder of body    (10). (3)    Lubricate with   silicone    compound (Item   9,  Appendix D)  and   place    new    0-ring    (8)  on   seat    (7). (4)    Insert   seat    (7)  into   body   (10). (5)    Lubricate threads with   halocarbon grease (Item    13,   Appendix D),  insert    and    screw    body    (10) into  housing     (2). (6)   Conduct required tests    to   ensure proper     operation of  the   check    valve    (1). (7)   After   testing, seal check valve    assembly (1)   in  a  clean plastic bag   (Item    6,  Appendix D). Package in  a   second plastic bag   (Item    6,  Appendix D)  with   a  tag   between inner    and    outer bag bearing the   following information readable from   the    outside: Part No.:   13229E4646 CAGE: 97403 Nomenclature: Check Valve 5-28 Change 1