TM 55-2210-224-12
Table 3-1. Operator Troubleshooting (continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
BRAKE SYSTEM
4. HANDBRAKE WILL NOT APPLY.
Step 1. Check for defective handbrake.
Notify unit maintenance.
Step 2. Check for broken chain.
Notify unit maintenance.
Step 3. Check for defective rollers or pins.
Notify unit maintenance.
5. LOCOMOTIVE BRAKES WILL NOT APPLY.
Step 1. Check for insufficient build up of air pressure.
Idle engine until air pressure builds up.
Step 2. Check for open air cock.
Close air cock.
Step 3. Check for an air leak.
Notify unit maintenance.
Step 4. Check for out-of-adjustment brake cylinder piston travel.
Notify unit maintenance.
ELECTRICAL INSTRUMENTS AND CONTROLS
6. LOCOMOTIVE DOES NOT RESPOND TO THROTTLE.
Step 1. Check for reverser handle in the NEUTRAL position.
Place reverser handle in direction of desired travel.
Step 2. Check for improper release of the handbrake, independent airbrake valve, or automatic brake
valve.
Release applied brake(s).
3-4
