TM 9-4910-623-14 & P
General Procedures for Leakage Test.
a . Preparation for Testing_.
U s i n g proper connectors, nuts, adapters, a n d t h e f l e x i b l e c o n n e c t o r
t u b e (4, fig 1), adapt the connection assembly to the device under
L o o s e n filler cap (5, fig 3) and turn pump valve (6) counterclock-
w i s e two or three turns.
Purge the nozzle under test by operating the handle with a pumping
O p e n the gage valve (7) counterclockwise one turn.
Operate pump handle and note when gage (8) reaches t h e pressure
( R e f e r to the appro-
recommended for recording the leakage test.
priate manual on the device under test for the recommended pressure
to be used for the leakage test.)
T u r n pump valve clockwise until the valve is seated.
Record the time and pressure drop as described in the manual on the
d e v i c e under test.
Upon completion of the test , open gage valve (7) counterclockwise
u n t i l the pressure is released from the device and tester.
Remove the connector assembly from the device and tester.
( 1 ) Before interchanging gages, release existing pressures on gages by
t u r n i n g gage valve fully counterclockwise.
( 2 ) Place fingers in semicircular opening under gage housing and push
gage (1) and adapter assembly (2) up and out.