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TM 9-2320-364-20-2
2-1844
12. SERVICE BRAKES ON AXLES NO. 4 AND NO. 5 DO NOT APPLY (CONT).
4.
Does air chamber rod operate
correctly?
Replace air chamber
(Para 12-10).
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 apply.
Air lines free of crimps or leaks
and fittings, valves and air
chambers free of leaks.
Service relay valve No. 3 OK.
Air chambers faulty.
Brakes faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Operation test.
If air chamber rod binds as it
travels in air chamber, it will not
permit brake to apply.
WARNING
5.
Are brake shoes and wedges
free of damage?
Replace brake shoes
and/or wedges
(Para 12-2).
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 apply.
Air lines free of crimps or leaks
and fittings, valves and air
chambers free of leaks.
Service relay valve No. 3
OK.
Air chambers OK.
Brakes faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Visual inspection.
If brake components are faulty,
they will prevent brakes from
applying.
Fault not corrected.
Notify DS
Maintenance.
WARNING
Read WARNING
on Page 2-1845
Read WARNING
on Page 2-1845
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