TM 5-4310-386-14
Table 4-2. Unit Troubleshooting Procedures (Cont).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
13. BATTERY UNDERCHARGED (AMMETER INDICATES CONSTANT DISCHARGE).
Step 1. Inspect for defective cables, dirty or corroded battery posts and terminals.
Clean or replace as necessary (para. 4-45).
Step 2. Check for loose or broken V-belt.
Tighten or replace V-belt (para. 4-41).
Step 3. Check for defective alternator.
Replace defective alternator (para. 4-44).
14. BATTERY OVERCHARGES.
Step 1. Check for defective wire harness.
Perform harness test (para. 4-43).
Step 2. Check for poor or inadequate ground.
Ensure clean ground contact (para. 4-45).
Step 3. Check for broken ammeter lead wire.
Clean, repair, or replace as necessary (para. 4-43).
15. BATTERY CHARGES AT IDLE BUT DISCHARGES UNDER LOAD CONDITIONS.
Step 1. Check for loose or slipping V-belts.
Adjust belt tension or replace belts as necessary (para. 4-41).
Step 2. Check for defective alternator.
Replace defective alternator (para. 4-44).
16. AMMETER SHOWS (-) UNDER MODERATE LOAD; BATTERY APPEARS CHARGED.
Check for defective alternator.
Replace defective alternator (para. 4-44).
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