TM 10-3930-669-34 (10)  Remove three plugs (49) and preformed    packings    (50).        Discard preformed packings. (11)  Remove  tee  (51),  preformed  packing (52),  45°  elbow  (13),  45°  elbow  (30), and preformed packing (53).   Discard preformed packings. (12) Remove    90°    tee    (54),    preformed packing  (55),  45°  elbow  (15),  elbow (32),    and    preformed    packing    (56). Discard preformed packings. (13) Remove  three  screws   (57),   washers (58),    and    stack    valve    (27)    from mounting plate (59). (14) Remove  two  shut-off  plugs  (60)  from stack valve (27). (15) Remove two nuts (61) and tie rod (62) from stack valve (27). (16) Remove four nuts (63) and two tie rods (64). 15-17

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