TM 9-2330-294-14
leakage at exhaust port. Air leakage shall not exceed
ferential between service port and any delivery port
a 1-in diameter bubble in 5 seconds.
shall not be more than 5 psi.
(15) Reduce service port pressure to 0 psi.
(8) Reduce service port pressure to 0 psi.
Adjust pressure regulator valve #3 for an emergency
Pressure at delivery ports shall be 0 psi.
pressure of 45 psi.
(9) Close shutoff valve #3 and vent emergency
(16) Using a suitable solution, test for air
port air reservoir. Pressure at delivery ports shall be
equal to reservoir port pressure.
leakage at exhaust port. Air leakage shall not exceed
a 1-inch diameter bubble in 5 seconds.
(10) Close emergency air reservoir vent valve.
(17) Close shutoff valve #1. Vent emergency
Open shutoff valve #3. Adjust pressure regulator
and relay air reservoirs.
valve #3 until relay reservoir pressure gage reads 100
(18) Open vent valve #1.
psi.
(19) Remove emergency relay valve from
(11) Using a suitable solution, test for air
testing device,
leakage at exhaust port. Air leakage shall not exceed
b. Air Suspension Air Control Valve (CPR
l-inch diameter bubble in 5 seconds.
(12) Close vent valve #1 and open shutoff valve
(1) Using suitable lines and fittings, connect
#2.
the air control valve to a testing device as shown in
(13) Adjust pressure regulator valve #2 until
delivery port pressure reads 60 psi.
(14) Using a suitable solution, test for air
Figure E-2. Bench testing the air suspension air control valve.
(2) Close vent valve, Open hand control valve.
No. 1 (extreme right), Pressure at outlet port "B"
(3) Adjust pressure regulator valve for inlet
shall equal the inlet port pressure, Pressure at outlet
pressure of 90 psi,
ports "A", "C" and "D" shall equal 0 psi.
NOTE
(5) Using a suitable solution, check for air
Stand clear of hand valve exhaust ports for
leakage at exhaust ports, Air leakage shall not
remainder of test.
exceed a 10-inch diameter bubble in 3 seconds,
(4) Place air control valve handle in position
(6) Using a suitable solution, check for air
E-2