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TM 9-2320-364-20-2
2-1863
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.
(1) Disconnect air line 2013 from
right air chamber on Axle No. 1.
(2) Connect a 0 to 160 psi (0 to 1103 kPa)
gage to air line 2013.
(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
2013, perform Step (4) below
and replace service relay valve
No. 1 (Para 12-13).
(b) If there are 125 4 psi (861 28
kPa) present at air line 2013,
service relay valve No. 1
is OK.
(4) Release brakes.
(5) Remove gage and connect air line
2013 to No. 1 Axle air chamber.
SERVICE RELAY VALVE NO. 1 TEST
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