Troubleshooting

RENR2696-01 35
Troubleshooting Section
Troubleshooti
ng without a
Diagnostic Code
i01798099
Alternator Noise
(Noisy Operation)
Note: This is NOT an electronic system problem.
Refer to Testing and Adjusting for information on
determining the cause of this condition.
Probable Causes
•
Alternator drive belts
•
Alternator drive pulley
•
Alternator bearings
Recommended Actions
Alternator Drive Belts
1. Inspect the condition of the alternator drive belts.
If the alternator drive belts are worn or damaged,
replace the belts. Refer t o Disassembly and
Assembly, “Alternator - Remove” and Disassembly
and Assembly, “Alternator - Install”. Ensure that
the alternator drive belts are in alignment. 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 belts and the alternator drive
pulley are in alignment.
2. Check the tension on the alternator drive belts.
Adjust the tension, if necessary. Refer to Testing
and Adjusting, “V-Belt - Test”.
Alternator Drive Pulley
Loosen the nut for the alternator drive pulley and
tighten the nut to the correct torque. Refer to
Specifications, “Alternator and Regulator” for the
correct torque.
Alternator Bearings
Verify that there is excessive play of the shaft in
the alternator and that the alternator bearings are
worn. The alternator is a nonserviceable item. The
alternator must be replaced if the bearings are worn.
Refer to Disassembly and Assembly, “Alternator
- Remove” and Disassembly and Assembly ,
“Alternator - Install”.
i01798098
Alternator Will Not Ch arge
(Charging Problem )
Note: This is N
OT an electronic system problem.
Probable Caus
es
•
Alternator drive belts
•
Charging circuit
•
Regulator
•
Alternator
Recommended Actions
Alternator Drive Belts
1. Inspect the co
ndition of the alternator drive belts.
If the alternator drive belts are worn or damaged,
replace the belts. Refer to Disassembly and
Assembly, “A
lternator - Remove” and Disassembly
and Assembly, “Alternator - Install”.
Check the ten
sion on the alternator drive belts.
Adjust the belt tension if the tension is incorrect.
Refer to Testing and Adjusting, “V-Belt - Test”.
Charging Circuit
Inspect the b
attery cables, wiring, and connections in
the charging circuit. Clean all connections and tighten
all connections. Replace any faulty parts.
Alternator or Regulator
Verify that
the alternator or the regulator is operating
correctly. Refer to Testing and Adjusting, “Alternator
- Test”. The alternator is not a serviceable item. The
alternator
must be replaced if the alternator is not
operating correctly.
i01798112
Battery
Note: This is NOT an electronic system problem.
Probable Causes
•
Faulty battery
•
Auxiliary device drains the battery current.