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TM 9-2320-364-20-2
2-1823
(1) Disconnect air line 2546 from
right air chamber on No. 3 Axle.
(2) Connect a 0 to 160 psi (0 to 1103 kPa)
gage to air line 2546.
(3) Observe gage while assistant applies
service brakes (TM 9-2320-364-10).
(a) If there are not 125 4 psi
(861 28 kPa) present at air
line 2546, perform Steps (4) and
(5) below and replace service
relay valve No. 2 (Para 12-14).
(b) If there are 125 4 psi
(861 28 kPa) present at air
line 2546, valve is OK.
(4) Release service brakes.
(5) Remove gage and connect air line
2546 to No. 3 Axle right air chamber.
SERVICE RELAY VALVE NO. 2 TEST
Wear safety goggles when performing leakage tests on valves. Failure to do so may result in serious
eye injury due to high pressure air.
If air lines are under high pressure when they are disconnected, they can whip around and cause injury
to personnel. Caution should be exercised when loosening or disconnecting air line fittings.
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