Operation Description
62
2.20.9 Alternator Faults and Troubleshooting
Table 2-13 Alternator Faults and Troubleshooting
Fault
Causes
Solutions
The alternator does not
generate electricity
(1) Wiring is wrong, broken, and/or making
poor contact
(2) Rotor circuit broken
(3) Rectifier diode damaged
(4) Carbon bushes are not making
proper contact
(5) Regulator is damaged
(1) Check and repair the circuits
(2) Replace alternator
(3) Replace alternator
(4) Replace alternator
(5) Replace alternator
The alternator is not
charging properly
(1) The drive V-belt is loose
(2) Bad contact with the carbon brush and
the commutator
(3) The regulator is damaged
(4) Not enough electrolytes in the battery or
battery is sulfurized or too old
(1) Adjust the tension of the
drive V-belt
(2) Replace alternator
(3) Replace alternator
(4) Replace battery
The alternator is
overcharging
(1) Regulating voltage for the regulator is
too high
(1) Replace the voltage regulator
2.20.10 Battery Faults and Troubleshooting
Table 2-14 Battery Faults and Troubleshooting
Fault
Causes
Solutions
The battery capacity is
low and the engine is
hard to start
(1) Short circuit between electrode plates in
the battery
(2) Sulphurization of the electrode plates in
the battery
(3) Poor circuit connector contact, or too
much oxidation
(1) Replace battery
(2) Replace battery
(3) Clean battery terminal, securely
fasten cable connector, and coat with
a layer of petroleum jelly
Excessive battery
discharging
(1) Impurities in the electrolytes
(2) Short circuits exist in the
electrical system
(3) Short circuit caused by placement
of a metal tool or bar between
positive/negative posts
(4) Corrosion on battery terminals or cables
(1) Replace battery
(2) Troubleshoot and repair
(3) Remove metal object, replace
battery if necessary
(4) Clean and replace if necessary
Summary of Contents for 82XTC
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