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TM 9-2320-364-20-2
2-1814
9. SERVICE BRAKES ON AXLES NO. 3 THROUGH NO. 5 DO NOT RELEASE (CONT).
2.
Does brake treadle valve
operate correctly?
Replace brake treadle
valve (Para 12-4).
Verify repair, go to
Step 5 of this Fault.
YES
NO
Brakes adjusted.
Air lines OK.
Brake treadle valve faulty.
Front double check valve (top)
faulty.
Quick release valve faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Brake treadle valve test.
If brake treadle valve does not
operate correctly, brakes on
Axles No. 3 through No. 5 will
not release.
WARNING
3.
Does front double check
valve (top) operate correctly?
Replace front double
check valve (top)
(Para 12-11).
Verify repair, go to
Step 5 of this Fault.
YES
NO
Brakes adjusted.
Air lines OK.
Brake treadle valve OK.
Front double check valve
(top) faulty.
Quick release valve faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Front double check valve (top)
test.
If front double check valve (top)
does not operate correctly it will
prevent service relay valves
from releasing brakes.
Read WARNING
on Page 2-1815
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