ALTERNATOR NOT CHARGING

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Troubleshooting

TM-55-1905-222-14 Landing Craft Mechanized (LCM-8) (ROHR and Gunderson Models) (1905-01-284-2647 AND 1905-01-284-2648) Manual

BATTERIES WILL NOT HOLD CHARGE

TM 55-1905-222-14

Troubleshooting - Continued

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

ELECTRICAL SYSTEM

1. ALTERNATOR NOT CHARGING

Step 1.

Check to see if drive belts are loose or broken

Tighten alternator drive belts or replace as necessary

Step 2.

Check to see If alternator leads are secure

Secure alternator leads

Step 3.

Test to see if voltage regulator/voltage protector is defective (para. 3-5)

Notify unit maintenance

Step 4.

Test to see if alternator is defective (para. 3-5)

Notify unit maintenance.

2. ALTERNATOR OUTPUT LOW OR UNSTEADY

Step 1.

Check to see if drive belts are loose

Tighten alternator drive belts

Step 2.

Test to see if voltage regulator/voltage protector is defective.

Notify unit maintenance

Step 3.

Check to see if alternator brushes are worn or loose.

Notify unit maintenance

3. NOISY ALTERNATOR

Step 1.

Check to see If drive belts or pulley are loose

Tighten drive belts and pulley

Step 2.

Check for misaligned belts or pulley

Correct alignment

3-4