TM 5-3800-205-10-1
TROUBLESHOOTING PROCEDURES - CONTINUED
0012 00
Table 1. Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
AIR SYSTEM AND BRAKES - CONTINUED
WARNING
Park machine on level ground, stop engine, and lower bowl to prevent injury to operator and/or
severe damage to machine.
3.
Parking/Emergency Brake Will Not
Engage.
NOTE
Parking/emergency brake will automatically engage if air pressure falls below 40 psi (276 kPa)
1. Check for debris/obstruction at
1. Clean debris/obstruction from
parking brake actuator.
parking brake actuator. If
problem still exists, go to test
step 2.
2. Slowly try to move machine
2. If problem still exists, go to test
forward to test if brake is
step 3.
engaged.
3. Perform parking brake test
3. If problem still exists, notify
Unit Maintenance.
1. If air pressure is not above 55
4.
Parking/Emergency Brake Will Not
1. Observe air pressure gage. Air
psi (379 kPa), check and close
Release.
pressure must be above 55 psi
air tank drain valve(s) if
(379 kPa) in order to release
required. If problem still
parking brake.
exists, go to test step 2.
2. Slowly try to move machine
2. If problem still exists, go to test
forward to test if brake is
step 3.
released.
3. Perform parking brake test
3. If problem still exists, notify
Unit Maintenance.
WARNING
Park machine on level ground, stop engine, and lower bowl to prevent injury to operator and/or
severe damage to machine.
5.
Service Brakes
Do
Not
Operate
1. Check for mud or dirt under
1. Clean mud or dirt from under
Correctly.
brake pedal.
brake pedal. If problem still
exists, go to test step 2.
2. Check air/hydraulic hoses for
2. Tighten air/hydraulic hoses, if
loose connections.
required. If problem still
exists, go to test step 3.
