TM-9-2330-330-14-P

SEMITRAILER, FUEL TANKER: 5000-GALLON, FUEL-DISPENSING, AUTOMOTIVE, M969A3

TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)

NOVEMBER 2005

TM-9-2330-330-14-P - Page 155 of 1116

TM 9-2330-330-14&P

0026 00-1

ALTERNATOR AND CHARGING CIRCUIT TROUBLESHOOTING

0026 00

THIS WP COVERS:

Alternator and Charging Circuit Troubleshooting

INITIAL SETUP:

Maintenance Level

Tools and Special Tools

Organizational

Tool kit, general mechanic’s (item 4, WP 0171 00)

Multimeter (item 2, WP 0171 00)

References

TM 9-6140-200-14

WP 0056 00

WP 0116 00

WP 0117 00

To troubleshoot M969A3 alternator and charging circuit, perform the test/inspections and corrective

actions provided in Table 1.

Table 1. Troubleshooting Procedures.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1.

UNDERCHARGED

BATTERIES

1.

Check for loose or

corroded battery terminals,

cables, and connections,

and moisture and dirt on

top of batteries.

2.

Look for worn or glazed

pulley or loose belt on

alternator.

Clean battery and clean and

tighten battery connections (refer

to WP 0056 00). Replace any

damaged cables (refer to WP

0056 00). Charge and test

batteries (refer to TM 9-6140-

200-14). Verify problem is

solved. If battery still does not

hold a charge, go to step 2.

Adjust alternator drive belt (refer

to WP 0116 00) if loose. Replace

alternator belt (refer to WP 0117

00) if glazed, cracked or worn. If

pulley is worn or glazed, notify

Direct Support maintenance.