TM 5-3805-290-23-1
TROUBLESHOOTING WITHOUT A DIAGNOSTIC CODE - CONTINUED
0008 00
Table 2. Electrical System Troubleshooting.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Inspect condition and tension of
1. If alternator drive belts are worn,
1.
Alternator (Charging
alternator belts (WP 0046 00).
damaged, or loose, replace or adjust
Problem).
belts.
2. If problem still exists, go to Test 2.
2. Inspect battery cables, wiring, and
1. Clean any corroded or dirty
connections in charging circuit. Refer
connections, tighten any loose
to Electrical System Schematic (WP
connections, and replace any faulty
wiring harnesses (WP 0169 00 thru WP
0175 00).
2. If problem still exists, go to Test 3.
3. Inspect and load test batteries (TM 9-
1. If batteries are damaged, defective, or
6140-200-14).
do not pass load test, replace batteries
(WP 0077 00).
2. If problem still exists, test and replace
alternator as necessary (WP 0047 00).
1. Inspect condition and tension of
1. If alternator drive belts are worn,
2.
Alternator (Noisy
alternator drive belts (WP 0046 00).
damaged, or loose, replace or adjust
Operation).
belts.
2. If problem still exists, go to Test 2.
2. Ensure alternator drive belts are in
1. If necessary, replace mounting bracket
proper alignment. Inspect alternator
to ensure alternator drive belts and
mounting bracket for cracks and wear
alternator drive pulley are in alignment
(WP 0046 00 and WP 0047 00).
(WP 0047 00).
2. If problem still exists, go to Test 3.
3. Check torque on alternator pulley (WP 1. Loosen nut for alternator drive pulley
0047 00).
and tighten nut to 33 to 40 lb-ft (45 to
55 Nm).
2. If problem still exists, replace
alternator (WP 0047 00).
1. Inspect battery disconnect switch,
1. If battery cables are corroded, remove
3.
Engine Will Not Crank.
battery post, and battery cables for
and clean battery cables (WP 0079 00).
loose connections and corrosion.
Tighten and clean any loose or
corroded connections.
2. If problem still exists, go to Test 2.
2. Load test batteries and inspect for
1. If damaged, replace batteries (WP 0077
damage or leaks (TM 9-6140-200-14).
00).
2. If problem still exists, go to Test 3.
3. Test starting system. Refer to Electric
If problem still exists, go to Test 4.
Starting System Test (WP 0013 00).
