TM 55-1520-240-23-6
7-243
TEST ACCUMULATOR (1356-643887M1) (AVIM)
(Continued)
7-243
GAS LEAKAGE TEST
16.
Insert dowel (10) through gas port (9) to contact
piston of accumulator (2). Push dowel until
piston bottoms. Remove dowel.
17.
Connect reservoir (11) to port (1).
18.
Fill reservoir (11) with fluid (E199) until tube (12)
is covered. Use gloves (E186).
19.
Position accumulator (2) on its side.
20.
Connect nitrogen supply (13) to port (9).
21.
Apply pressure to port (9). Open valve (14).
Close valve (15). Adjust regulator (16) for 200
psi on gage (17). Close valve (14).
22.
Fill 10 cc graduate (18) with fluid (E199). Place
graduate over tube (12) in reservoir (11). Fluid
level in graduate must be above fluid level in
reservoir.
23.
Record fluid level in graduate (18). Check fluid
level after 1 hour. Fluid level shall not change by
more than 0.5 cc.
24.
Open valve (14). Adjust regulator (16) for 2000
psi on gage (17). Close valve (14).
25.
Repeat step 23. Then perform step 26.
26.
Adjust regulator (16). Reduce pressure to 0 psi
on gage (17). Adjust regulator (15).
27.
Remove graduate (18) from reservoir (11).
28.
Disconnect reservoir (11) from port (1). Use
container and cloths (E120) for spilled fluid.
Deplete air pressure before
disconnecting tubes or hoses.
Otherwise, injury to personnel can
occur.
29.
Open valve (15). Disconnect supply (13) from
port (9).
INSPECT
FOLLOW-ON MAINTENANCE:
None
END OF TASK
7-912
