ALTERNATOR AND CHARGING CIRCUIT TROUBLESHOOTING
THIS WP COVERS:
Alternator and Charging Circuit Troubleshooting
Tools and Special Tools
Tool kit, general mechanic's (item 4, WP 0171 00)
Multimeter (item 2, WP 0171 00)
To troubleshoot M969A3 alternator and charging circuit, perform the test/inspections and corrective
actions provided in Table 1.
Table 1. Troubleshooting Procedures.
TEST OR INSPECTION
Check for loose or
Clean battery and clean and
corroded battery terminals,
tighten battery connections (refer
cables, and connections,
to WP 0056 00). Replace any
and moisture and dirt on
damaged cables (refer to WP
top of batteries.
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.
Look for worn or glazed
Adjust alternator drive belt (refer
pulley or loose belt on
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.