38 KENR6933
Troubleshooting Section
Troubleshooti
ng without a
Diagnostic Code
i02528126
Alternator Noise
Note: This is not an electronic system problem.
Refer to Testing and Adjusting for information on
possible electrical causes of this condition.
Probable Causes
•
Alternator drive belt
•
Alternator mounting bracket
•
Automatic tensioner
•
Alternator drive pulley
•
Alternator bearings
Recommended Actions
Alternator Drive Belt
Inspect the condition of the alternator drive belt. If
the alternator drive belt is worn or damaged, check
that the drive belt for the alternator and the pulley are
correctly aligned. If the alignment is correct, replace
the drive belt. Refer to Disassembly and Assembly,
“Alternator Belt - Remove and Install”.
Alternator Mounting Bracket
Inspect the alternator mounting bracket for cracks
and wear. Repair the mounting bracket or replace
the mounting bracket in order to ensure that the
alternator drive belt and the alternator drive pulley
are in alignment.
Automatic Tensioner
Check the tension on the alternator drive belts. If
necessary, replace the automatic tensioner. Refer to
Disassembly and Assembly, “Alternator - Remove”
and Disassembly and Assembly, “Alternator - Install”.
Alternator Drive Pulley
Remove the nut for the alternator drive pulley and
then inspect the nut and the drive shaft. If no damage
is found, inst
all the nut and tighten the nut to the
correct torque. Refer to Specifications, “Alternator
and Regulator” for the correct torque.
Alternator Bearings
Check for exce
ssive play of the shaft in the alternator.
Check for wear in the alternator bearings. The
alternator is a nonserviceable item. The alternator
must be repla
ced if the bearings are worn. Refer to
Disassembly and Assembly, “Alternator - Remove”
and Disassembly and Assembly , “Alternator - Install”.
i02344740
Alternator Will Not Ch arge
Note: This is not an electronic system problem.
Probable Causes
•
Alternator drive belt
•
Automatic tensioner
•
Charging circuit
•
Alternator
Recommended Actions
Alternator Drive Belt
Inspect the condition of the alternator drive belt. If
the alternator drive belt is worn or damaged, check
that the drive belt for the alternator and the pulley are
correctly aligned. If the alignment is correct, replace
the drive belt. Refer to Disassembly and Assembly,
“Alternator Belt - Remove and Install”.
Automa tic Tensioner
Check the tension on the alternator drive belt. If
necessary, replace the automatic tensioner. Refer to
Disassembly and Assembly, “Alternator - Remove”
and Disassembly and Assembly, “Alternator - Install”.
Charging Circuit
Inspect the battery cables, wiring, and connections in
the charging circuit. Clean all connections and tighten
all connections. Replace any faulty parts.
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