TM 55-1520-240-23-8
10-16
TESTING REPAIRED CELL — CHEMICAL
(Continued)
10-16
NOTE
Procedure is same for testing any fuel
cell. Main cell is shown here.
1.
Install fuel cell (1) in cage, jig or overhead
suspension system (2).
2.
Install plugs or sealed fittings in all tank openings
(3). Leave main access door (4) and one tank
opening (5) unsealed.
3.
Install tee assembly (6) in tank opening (5).
4.
Connect hose (7) from air supply to one leg of
tee (6).
5.
Connect manometer (8) to other leg of tee (6).
6.
Pour 114 cc of ammonium hydroxide (E73) on
cloth (E120). Wear gloves (E186).
NOTE
Wear gloves through rest of task.
7.
Insert wet cloth into fuel cell (1) through main
access (4).
8.
Install cover plate (9) on main access hole (4).
Install screws (10) and washers (11).
9.
Prepare solution of 40 grams of phenolphthalein
crystals (E276) and 2 quarts of ethyl alcohol
(E167). Stir solution thoroughly.
10.
Add 2 quarts of water to solution and stir.
11.
Inflate cell (1) with dry air to 1 to 1.5 psi
maximum.
12.
Dip cloth (E120) into solution and wring out cloth
thoroughly.
13.
Spread cloth on exterior surface of cell (1) and
press cloth to ensure contact with surface. Wait
at least 30 seconds.
10-66
