TM 9-2320-365-10
Table 3-2. Troubleshooting (Cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
j. AIR SYSTEM
j1.
AIR SYSTEM LOSES PRESSURE DURING OPERATION/SLOW, NO, OR INCORRECT
AIR PRESSURE BUILDUP.
Notify Unit Maintenance.
j2.
LARGE QUANTITY OF MOISTURE EXPELLED FROM AIR RESERVOIRS.
Notify Unit Maintenance.
j3.
AIR DRYER PURGES CONTINUALLY.
Notify Unit Maintenance.
j4.
NO AIR PRESSURE PRESENT AT REAR GLADHAND(S).
Step 1. Check to see if vehicle brakes operate.
(a)
Check vehicle parking brakes (para 2-21).
If parking brakes do not apply, perform Brake System Troubleshooting (i8. Parking Brakes
Do Not Apply).
(b)
Check vehicle service brakes (para 2-21).
If service brakes do not apply, perform Brake System Troubleshooting (i1. Excessive
Braking Distance).
Step 2. Inspect air hoses for kinks, damage, and leaks.
(a)
Inspect air hoses from rear gladhands to air brake protecting valve.
(b)
Inspect air hoses from air brake protecting valve to TRAILER AIR SUPPLY valve.
(c)
Inspect air hose from air brake protecting valve to inversion valve.
(d)
Inspect air hose from inversion valve to front axle quick release valve tee fitting.
(e)
Inspect air hose from air brake protecting valve to load sensing valve.
(f)
Inspect air hose from load sensing valve to service gladhand two-way check valve.
If any air hose is kinked, damaged, or leaking; notify Unit Maintenance.
Step 3. If air pressure is still not present at rear gladhand(s), notify Unit Maintenance.
j5.
AIR SYSTEM PRESSURE BUILDS UP MORE THAN 120 PSI (827 KPA) (COMPRESSOR
FAILS TO UNLOAD).
Notify Unit Maintenance.
j6.
NOISY AIR COMPRESSOR OPERATION.
Notify Unit Maintenance.
Change 1
3-70.3
