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TM 9-2320-364-20-2
2-1862
14. SERVICE BRAKES ON AXLES NO. 1 AND NO. 2 DO NOT APPLY (CONT).
4.
Does service relay valve No. 1
supply 125 3 psi (861 20
kPa) to air hose 2013 at right
wheel air chamber?
.
YES
NO
Brakes on Axles No. 1 and
No. 2 fail to apply.
Air lines free of crimps or leaks
and fittings, valves and air
chambers free of leaks.
Brake treadle valve OK.
Service relay valve No. 1
faulty.
Air chambers faulty.
Brakes faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Service relay valve No. 1 test.
WARNING
If service relay valve No. 1 fails
closed, it will not apply air to
the air chamber.
Replace service
relay valve No. 1
(Para 12-13).
Verify repair, go to
Step 7 of this Fault.
Read WARNING
on Page 2-1863
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