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TM 9-2320-364-20-2
2-1860
14. SERVICE BRAKES ON AXLES NO. 1 AND NO. 2 DO NOT APPLY (CONT).
2.
Are air lines 2488 and 2536
free from crimps and/or leaks
and are fittings, valves and
air chambers free of leaks?
Replace air lines or
fittings, and/or
tighten/replace valve,
air chamber (Para
12-36, 12-9, 12-10,
12-13 and see
schematic Fig 2-44).
Verify repair, go to
Step 7 of this Fault.
YES
NO
Brakes on Axles No. 1 and
No. 2 fail to apply.
Air lines crimped or leaking
and/or fittings, valves or
air chambers leaking.
Brake treadle valve faulty.
Service relay valve No. 1
faulty.
Air chambers faulty.
Brakes faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Visual inspection.
Audible inspection.
If air lines and/or fittings, valves
or air chambers are leaking,
loss of air pressure will prevent
brakes from applying.
WARNING
3.
Does brake treadle valve
operate correctly?
Replace brake treadle
valve (Para 12-4).
Verify repair, go to
Step 7 of this Fault.
YES
NO
Brakes on Axles No. 1 and
No. 2 fail to operate.
Air lines free of crimps or leaks
and fittings, valves and air
chambers free of leaks.
Brake treadle valve faulty.
Service relay valve No. 1
faulty.
Air chambers faulty.
Brakes faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Brake treadle valve test.
If brake treadle valve does not
operate correctly, service
brakes on Axles No. 1 and
No. 2 will not apply.
WARNING
Read WARNING
on Page 2-1861
Read WARNING
on Page 2-1861
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