TM 10-4320-303-13
WARNING
Pressure regulating valve spring is under pressure. Slowly remove pressure
valve cap to prevent flying components. Failure to obey this warning may
result in personal injury or injury to personnel.
d. Slowly remove pressure valve cap (3), seat (6), and spring (7).
e. Remove valve piston (8), valve diaphragm (9), valve retainer disk (10), and connecting link (11) from
pressure valve retainer (12).
f. Remove nut (13) from connecting link (11).
g. Separate valve piston (8), valve diaphragm (9), valve retainer disk (10), and connecting link (11).
h. Remove pressure valve retainer (12) from body (14).
i. Remove flat washer (15), disc guide (16), gasket (17), and valve disk (18) from body (14). Discard old
gasket (17).
5.6.4.2 Inspection.
a. Inspect pressure valve cap (3), pressure valve retainer (12), and body (14) for corrosion, cracks,
holes, or damage.
b. Inspect all other components for corrosion or damage.
c. Replace all defective components.
5.6.4.3 Assembly.
a. Install valve disc (18), new gasket (17), disc guide (16), and flat washer (15) in body (14).
b. Place pressure valve retainer (12) on body (14).
c. Assemble valve retainer disc (10), valve diaphragm (9), and valve piston (8) on connecting link (11).
d. Install nut (13) on connecting link (11).
e. Insert connecting link (11), valve retainer disk (10), valve diaphragm (9), and valve piston (8) in
pressure valve retainer (12).
f. Install spring (7), seat (6), and pressure valve cap (3).
g. Align holes in pressure valve cap (3) with holes in pressure valve retainer (12).
h. Secure pressure valve cap (3) and pressure valve retainer (12).
i. Install six bolts (5) and nuts (4). Tighten nuts (4).
j. Install setscrew (2) in pressure valve cap (3).
k. Install jam nut (1).
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