TM 10 4320-303-13
5.5.1 Pressure-Reducing Control Repair. (Continued)
h. Check alignment of diaphragm (8). Move diaphragm left and right as far as possible. Holes in
diaphragm (8) should move equal distance to either side of holes in body (12) within 1/8 in. If
diaphragm does not align, repeat steps d through g above.
i. Move yoke (13) to OPEN and CLOSE positions. Make sure yoke (13) moves back and forth smoothly
and does not make contact with nozzle on body (12).
j. Install spring guide (3) on top of spring (4). Install spring (4) and spring guide (3).
k. Install cover (2) on body (12). Align holes in cover (2) with holes in body (12).
l. Install eight screws (1). Tighten screws (1).
5-6
