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TM 9-2320-364-20-2
2-1833
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.
Wear safety goggles when performing leakage tests on valves. Failure to do so may result in serious
eye injury due to high pressure air.
(1) Disconnect air line 2546 from
right air chamber on Axle No. 3.
(2) Connect a 0 to 160 psi (0 to 1103 kPa)
gage to air line 2546.
(3) Observe gage while assistant applies
then releases service brakes
(TM 9-2320-364-10).
(a) If there are not 125 4 psi
(861 28 kPa) present at air line
2546, perform Step (4) 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, service relay valve No. 2
is OK.
(4) Release service brakes.
(5) Remove the gage and connect air
line 2546 to Axle No. 3 right
air chamber.
SERVICE RELAY VALVE NO. 2 TEST
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