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 TM 55-1905-221-14-1
Table 4-1. Troubleshooting (Continued).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 2. Check cooler by-pass valve.
a. Remove and clean the by-pass valve.
b. Replace defective by-pass valve.
Step 3. Check gage.
Replace a defective gage (para 4-15).
6. EXCESSIVE VIBRATION IN PROPELLER SHAFT.
Check for bent or broken propeller.
Notify your supervisor.
7. ALTERNATOR FAILS TO CHARGE.
Step 1. Check for loose alternator belt.
Adjust alternator belt.
Step 2. Inspect charging circuits and battery connections.
Tighten connections to make good contact.
Step 3. Check for worn or defective brushes.
Replace defective brushes (para 4-28).
Step 4. Check regulator.
Replace defective regulator (para 4-29).
8. LOW OR UNSTEADY CHARGING RATE.
Step 1. Check for worn, sticky, or intermittent brush contact.
Replace defective brushes(para 4-28).
Step 2. Check regulator.
Replace defective regulator (para 4-29).
4-9
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