TM 10-4320-303-13
b. Inspect hypochlorinator frame (12), stroke adjustment knob (13), diaphragm cap (14), push rod (21),
impulse diaphragm (22), diaphragm clamping washer (23), spring (25), liquid head pushplate (29),
and diaphragm (30) for corrosion, cracks, bends, or damage.
c. Inspect check valves (3) and washers (4) for damage.
d. Inspect all mounting hardware and washers for corrosion or damage. 4.13.6.4 Repair. Repair of the
hypochlorinator assembly consists of replacing defective or damaged components.
4.13.6.5 Assembly.
a. Insert pushrod (21) into hypochlorinator frame (12).
b. Install flat washer (31), diaphragm (30), and liquid head pushplate (29) on pushrod (21).
c. Install liquid head (2) on hypochlorinator frame (12).
d. Align mounting holes of liquid head (2) with mounting holes of hypochlorinator frame (12).
e. Install eight new lock washers (28) and screws (27). Tighten screws (27).
f. Install new preformed packing (26), spring (25), spring spacer (24), diaphragm clamping washer (23),
and impulse diaphragm (22) on pushrod (21).
g. Install washer (20) and nut (19) on pushrod (21). Tighten nut (19).
h. Install diaphragm cap (14) on hypochlorinator frame (12) and align mounting holes of diaphragm cap
(14) with mounting holes on hypochlorinator frame (12).
i. Install four square nuts (18), flat washers (17), and screws (16). Tighten screws (16).
j. Install new preformed packing (15) on stroke adjust knob (13).
k. Insert stroke adjust knob (13) into diaphragm cap (14). Turn stroke adjustment knob (13) right one full
turn.
4.13.6.6 Installation.
a. Align mounting slots of hypochlorinator frame (12) with mounting holes on hypochlorination unit.
b. Install three bolts (11), flat washers (10), new lock washers (9), and nuts (8). Tighten nuts (8).
c. Insert washer (7) and check valve (6) into liquid head (2).
d. Install suction tube (5) into liquid head (2).
e. Install discharge tube (1) on hypochlorination unit.
f. Insert washer (4) and check valve (3) into liquid head (2).
g. Install discharge tube (1) into liquid head (2).
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