
TM 5-3805-261-10
TROUBLESHOOTING PROCEDURES - CONTINUED 0011 00
0011 00-4
AIR SYSTEM AND BRAKES
1. Parking/Emergency Brake Will Not
Engage.
Park machine on level ground, stop engine, and lower blade to
prevent injury to operator and/or severe damage to machine.
1. Check for debris/obstruction at
brake actuator.
Clean debris/obstruction from
brake actuator. If problem still
exists, go to test step 2.
Raise blade and scarifier before moving machine.
2. Slowly try to move machine
forward to test if brake is
engaged.
If problem still exists, go to test
step 3.
3. Perform parking brake test
(WP 0013 00).
If problem still exists, notify Unit
Maintenance.
2. Parking/Emergency Brake Will Not
Release.
1. Observe air pressure gages.
Air pressure must be above 60
psi (414 kPa) in order to
release parking brake.
If air pressure is not above 60 psi
(414 kPa), check and close air
tank drain valve(s) if required. If
problem still exists, go to test step
2.
2. Check for air leaks at air tank,
hoses, fittings, lines, and air
dryer (if equipped).
If any leaks are present, notify
Unit Maintenance. If no leaks are
found, go to test step 3.
Raise blade and scarifier before moving machine.
3. Slowly try to move machine
forward to test if brake is
released.
If problem still exists, notify Unit
Maintenance.
4. Perform parking brake test
(WP 0013 00).
If problem still exists, notify Unit
Maintenance.
MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION