TM 5-4310-451-14
Table 4-3. Electrical Troubleshooting (Con’t).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
If ambient temperature is below 32 °F (0 °C), check that engine oil and diesel fuel ratings are
correct.
Step 3.
Test current draw of engine starter.
If NOT OK, replace engine starter (see paragraph 4-53).
If OK, start engine.
3.
AMMETER INDICATES NO/LOW "CHARGE" CONDITION WITH ENGINE IDLING.
Step 1.
Check for loose, broken, or slipping belt.
If NOT OK, adjust or replace alternator belt (see paragraph 4-52). Start engine to verify
malfunction has been corrected.
If OK, perform step 2.
Step 2.
Was charging system operating time limited? If NOT OK, charge batteries as necessary (see TM 9-
6140-200-14). Start engine to verify malfunction has been corrected.
If OK, perform step 3.
Step 3.
Check for loose, dirty, and corroded terminals, leads, plugs, and connectors.
If NOT OK, clean, repair, or replace terminals, leads, plugs, or connectors as required (see
paragraph 4-61). Start engine to verify malfunction has been corrected.
If OK, perform step 4.
Step 4.
Check output condition of batteries (see TM 9-6140-200-14).
If NOT OK, replace batteries (see paragraph 4-60). Start engine to verify malfunction has been
corrected.
If OK, perform step 5.
Step 5.
With engine Idling, check voltage at voltage regulator terminal.
If voltage Is 1.5-4 volts, replace alternator (see paragraph 4-51). Start engine to verify that
malfunction has been corrected.
4.
AMMETER INDICATES CONSTANT "CHARGE" CONDITION WITH ENGINE IDLING.
Check for loose, dirty, and corroded voltage regulator leads or terminals.
Clean, repair, or replace as required (see paragraph 4-61). Start engine to verify malfunction has
been corrected.
4-15/(4-16 Blank)
