HYDRAULIC - PNEUMATIC - ELECTRICAL - ELECTRONIC SYSTEMS - ELECTRICAL POWER SYSTEM
Alternator - Inspect
Inspecting alternator operation
Locate the cause of faulty charging from malfunctions de-
scribed below. Do not remove the alternator for inspection
and repair unless inspection cannot be performed with the
alternator installed on the engine.
Adjusted value of voltage
regulator is high.
Overcharge
Faulty battery.
Low adjusted value of voltage
relay.
Faulty alternator output.
Electric power consumption is
extremely high.
Special load is used.
Over-discharge
Faulty wiring.
Handling precaution
Improper handling could cause damage or failure to the
alternator.
1.
Connect battery cables correctly. The (-) cable is for
grounding.
2.
Do not use any high voltage tester such as megger.
3.
Disconnect battery cables before recharging.
4.
Do not disconnect lead wire from B terminal of the
alternator while the engine is running.
5.
Battery voltage is constantly applied to B terminal of
the alternator. Do not ground at this terminal.
6.
Do not short circuit or ground at L terminal. (For a
built-in IC regulator type)
7.
When a steam cleaner is used, do not allow the
steam directly contact the alternator.
84373329 09/08/2010
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