TM 10-4320-303-13
4.13.5 Water Meter and Gear Box Assembly Replacement. (Continued)
a. Loosen two unions (Figure 4-18, 1) from two close nipples (2).
b. Remove four nuts (3), lock washers (4), and two u-bolts (5). Discard lock washers (4).
c. Remove four flat washers (6) and nuts (7) from two u-bolts (8).
d. Remove water meter and gear box assembly (9) from hypochlorination unit (10).
e. Remove two close nipples (2) from pipe tees (11 and 12).
f. Remove two pipe tees (11 and 12) from water meter and gear box assembly (9).
4.13.5.2 Inspection.
a. Inspect water meter and gear box assembly (9) for corrosion, leaks, cracks, missing components, or
damage. Notify direct support maintenance if water meter and gear box assembly (9) is damaged or
defective.
b. Inspect two close nipples (2) and pipe tees (11 and 12) for corrosion, cracks, holes, bends, or
damage.
c. Inspect mounting hardware for damage.
d. Replace all defective components.
4.13.5.3 Installation .
NOTE
Wrap all threaded portions of pressure gauge and fill assembly components with antiseize tape
prior to installation.
Wrap antiseize tape in direction of threads.
a. Install two pipe tees (11 and 12) on water meter and gear box assembly (9).
b. Install two close nipples (2) in pipe tees (11 and 12).
c. Position water meter and gear box assembly (9) on hypochlorination unit (10) for installation.
d. Install four nuts (7) and flat washers (6) on two U-bolts (8).
e. Install two u-bolts (8) through hypochlorination unit (10) securing water meter and gear box assembly
(9) to hypochlorination unit (10).
f. Install four new lock washers (4) and nuts (3) on two u-bolts (8). Tighten nuts (3) and (7).
g. Insert two close nipples (2) in two unions (1). Tighten unions (1) until water meter and gear box
assembly (9) is firmly secured to hypochlorination unit (10).
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