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TM 9-2320-364-20-2
2-1852
13. SERVICE BRAKES ON AXLES NO. 4 AND NO. 5 DO NOT RELEASE (CONT).
3.
Does service relay valve No. 3
release air from air line 2018?
Replace service
relay valve No. 3
(Para 12-15).
Verify repair, go to
Step 6 of this Fault.
YES
NO
Brakes on Axle No. 3 operate
correctly.
Brakes on Axles No. 4 and
No. 5 fail to release.
Air lines OK.
Service relay valve No. 3
faulty.
Air chambers faulty.
Brakes faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Service relay valve No. 3 test.
If the service relay valve No. 3
fails closed, brakes will not
release.
WARNING
Read WARNING
on Page 2-1853
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