TM 10-3930-669-34 NOTE Matchmark pump prior to removal. (12) Remove four screws (25), pump assembly (22), and preformed packing  (26)  from  cover  assembly  (5).    Discard preformed packing. (13) Remove    plug    (27),    preformed    packing    (28), spring (29), and valve (30) from cover assembly (5).  Discard preformed packing. (14) Remove  plug  (31)  and  preformed  packing  (32) from   cover   assembly   (5).   Discard   preformed packing. 8-25