TM 55-1520-240-23-6
7-243
TEST ACCUMULATOR (1356-643887M1) (AVIM)
(Continued)
7-243
INTEGRITY PRESSURE TEST
1.
Connect HYD port (1) of accumulator (2) to test
setup (3).
2.
Close valves (4 and 5).
3.
Apply pressure to port (1). Adjust valve (6) for
4500 psi on gage (7). Maintain pressure for 2
minutes.
4.
Check accumulator (2) for leaks. There shall be
no leaks.
5.
Reduce pressure to 0 psi on gage (7). Close
valve (6). Open valve (5).
6.
Close valve (5).
7.
Repeat steps 3 thru 6. Then perform step 8.
FLUID LEAKAGE TEST
8.
Open valve (4). Apply pressure to HYD port (1).
Adjust valve (6) for 2 psi on gage (8). Maintain
pressure for 2 hours.
9.
Check for leaks at port (9). Leaks shall not be
more than 2 drops.
10.
Reduce pressure to 0 psi on gage (8). Close
valve (6). Open valve (5).
11.
Close valves (4 and 5).
12.
Apply pressure to port (1). Adjust valve (6) for
3000 psi on gage (7). Maintain pressure for 30
minutes.
13.
Check for leaks at port (9). Leaks shall not be
more than 1 drop.
14.
Reduce pressure to 0 psi on gage (7). Close
valve (6). Open valve (5).
15.
Disconnect test setup (3) from port (1).
7-911
