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Page Title:
SERVICE BRAKE(S) ON ONE AXLE DO NOT APPLY OR APPLY SLOWLY. (Cont) |
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 TM 9-2330-385-14
6. SERVICE BRAKE(S) ON ONE AXLE DO NOT APPLY OR APPLY SLOWLY (CONT).
2.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Pressure test.
Truck air system OK.
on Page 4-281
Air lines, fittings, relay valve
REASON FOR QUESTION
and brake chambers OK (free
of leaks).
If relay valve does not operate
Does brake relay valve supply
correctly, service brake
60 5 psi (414 34 kPa) to
POSSIBLE PROBLEMS
chambers will not pressurize
brake chambers?
and apply brakes.
Relay valve faulty.
Multifunction valve faulty.
Brake chamber(s) faulty.
Slack adjuster(s) faulty.
If less than 55 psi,
Brake components faulty.
replace relay valve
(Para 4-38). If greater
than 65 psi, replace
NO
multifunction valve
Verify repair, go to
Step 6 of this Fault.
YES
4-280
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