TM 5-4310-452-14
Table 4-3. Electrical Troubleshooting Procedures (Con't).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 2. Was charging system operating time limited?
If OK, go to step 3.
If NOT OK, charge batteries as necessary (see TM 9-6140-200-14). Start engine to
verify malfunction has been corrected.
Step 3. Check for loose, dirty, or corroded terminals, leads, plugs, or connectors.
If OK, go to step 4.
If NOT OK, clean, repair, or replace terminals, leads, plugs, or connectors as required
(see paragraph 4-63). Start engine and verify malfunction has been corrected.
Step 4. Check output condition of batteries (see TM 9-6140-200-14).
If OK, go to step 5.
If NOT OK, replace batteries (see paragraph 4-57). Start engine to verify malfunction
has been corrected.
Step 5. With engine idling, check voltage at voltage regulator terminal.
If voltage is between 1.5-4 volts, replace alternator (see paragraph 4-36). Start engine
and verify malfunction has been corrected.
If voltage is 24 volts, go to step 6.
Step 6. Perform voltage regulator test (open) (see paragraph 4-36).
If OK, start engine and verify malfunction has been corrected.
If NOT OK, replace voltage regulator (see paragraph 4-38). Start engine and verify
malfunction has been corrected.
5. AMMETER INDICATES CONSTANT "CHARGE" CONDITION WITH ENGINE IDLING.
Step 1. Check for loose, dirty, or corroded regulator leads or terminals.
If OK, go to step 2.
If NOT OK, clean, repair, or replace as required (see paragraph 4-63). Start engine and
verify malfunction has been corrected.
Step 2. Perform voltage regulator test (shorted) (see paragraph 4-36).
If OK, replace alternator (see paragraph 4-36). Start engine and verify malfunction has
been corrected.
If NOT OK, replace voltage regulator (see paragraph 4-38). Start engine and verify mal-
function has been corrected.
4-17/(4-18 Blank)
