TM 9-2330-357-14&P
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 2.
Check semitrailer air reservoir for open air reservoir drain valve.
Close air reservoir drain valve.
Notify Organizational Maintenance if air reservoir drain valve Is closed.
Step 3.
Check air pressure of tractor truck.
Build air pressure to normal level.
Step 4.
Check connection of air lines to semitrailer air couplings.
Connect air lines to semitrailer air couplings (para 2-10).
Step 5.
Check for dirty or leaking air coupling.
Clean air coupling (para 3-8).
Notify Organizational Maintenance if air coupling is leaking.
Step 6.
Inspect brake hoses and connectors for leaks.
Notify Organizational Maintenance if hoses or connectors are leaking.
5. BRAKES GRAB.
Check for moisture in air reservoir by opening air reservoir drain valve (para 3-9).
Allow to drain.
Notify Organizational Maintenance if moisture is not present.
6. NO BRAKES OR WEAK BRAKES
Step 1.
Check for closed airbrake shutoff valves on tractor truck.
Open airbrake shutoff valves (refer to TM 9-2320-279-10).
Step 2.
Check semitrailer air reservoir for open air reservoir drain valve.
Close air reservoir drain valve.
Notify Organizational Maintenance if air reservoir drain valve is closed.
Step 3.
Check air pressure of tractor truck.
Build air pressure to normal level.
Step 4.
Check connection of air lines to semitrailer air couplings.
Connect air lines to semitrailer air couplings (para 2-10).
3-9
