TM 9-2320-303-10
Table 3-1. Troubleshooting (Con't).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
If air leaks are present or reservoir pressure loss exceeds 5 psi (34 kPa)
in two minutes, troubleshoot semitrailer.
3.
TRAILER BRAKES WILL NOT APPLY WHEN PEDAL OR HAND CONTROL ON
STEERING COLUMN IS USED.
Check intervehicular air hoses for proper connections to semitrailer.
Connect air hoses.
4.
TRAILER BRAKES WILL NOT RELEASE.
Step 1. Check position of trailer brake hand control.
Move control to forward (OFF) position.
Step 2. Check position of trailer air supply control knob.
Push knob in (ON).
Step 3. Check intervehicular air hoses for proper connections.
Connect air hoses.
Step 4. Check vehicle air system for leaks.
If leaks are found, notify Unit Maintenance.
If leaks are not found and vehicle components are not damaged,
troubleshoot semitrailer.
_______________________________
DRIVELINE LOCKING SYSTEM
5. DRIVELINE WILL NOT DISENGAGE WHEN INTERAXLE LOCKOUT CONTROL
VALVE LEVER IS MOVED TO UNLOCK POSITION.
Step 1. Ensure system has had enough time to disengage.
Leave interaxle lockout control valve lever in UNLOCKED position and
wait for light to go off.
Step 2. Excessive driveline windup may have occurred. Back truck up slowly. If
driveline does not disengage, notify Unit Maintenance.
3-7
