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TM5-4210-229-14&P
Table 4-4. Organizational Troubleshooting Chart
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
10. HANDLINE VALVES DO NOT OPERATE FREELY.
Check handline valves for corrosion.
Replace affected valves (paragraph 4-39).
11. DRY CHEMICAL HANDLINE VALVE DOES NOT CLOSE PROPERLY.
Check for dry chemical build up inside the valve.
Replace valve (paragraph 4-39).
12. MARKED DECREASE IN FLOW FROM DISCHARGE NOZZLES.
Check for low cylinder pressure.
Replace cylinders (paragraph 2-26).
HOSE REEL ASSEMBLY
13. HOSE NOZZLE LEAKS.
Step 1. Check for defective o-ring in coupling.
Replace o-ring (paragraph 4-39).
Step 2. Check for defective nozzle assembly.
Replace nozzle (paragraph 4-39).
14. HOSE REEL REWIND INOPERATIVE.
Perform operational check on rewind motor.
Replace rewind motor (paragraph 4-41).
FIRE BODY ASSEMBLY
15. BACK-UP LIGHTS INOPERATIVE.
Step 1. Inspect for loose or burnt out bulbs.
Secure or replace bulbs (paragraph 4-52).
Step 2. Inspect for loose connections.
Tighten connections.
Step 3. Inspect for blown fuse.
Replace fuse. If new fuse blows, check for short to ground in circuit from fuse through gear selector or back-up
light switch.
16. STOP LIGHTS INOPERATIVE.
Step 1. Inspect for loose or burnt out bulbs.
Secure or replace bulbs (paragraph 4-53).
Step 2. Inspect for loose connections.
Tighten connections.
Step 3. Inspect for blown fuse.
Replace fuse. If new fuse blows, check for short to ground in circuit between fuse and lights.
4-20
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