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TM 9-2320-270-10
Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
SEMITRAILER BRAKES WILL NOT APPLY
Step 1. Check tractor-to-trailer air hose connections (3).
a. If connections (3) are leaking, pull TRAILER AlR SUPPLY
control (4) out, disconnect gladhands and reconnect
properly. Push TRAILER AIR SUPPLY control (4)
recharge the system.
b. If tractor-to-trailer air hose connections (3) are still
notify Organizational Maintenance.
in to
leaking,
END OF PROCEDURE
c. If semitrailer brakes still will not apply when air pressure
is above 60 psi (414 kPa), troubleshoot semitrailer.
TA220926
3-29
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