2-194 Change 1
These Alternator tests can be run any time you think there may be a problem with the
alternator or battery charging or if you were sent here from another system chain.
These tests are NOT for the batteries. These tests are strictly for the alternator, its
operation, and its associated wiring. Tests for the batteries are in Battery Circuit,
Paragraph 2-29.
A simplified block diagram for the alternator system is given on page 2-195. A detailed
functional flow schematic is provided as foldout FO-6 to help you understand the system
as you perform the tests.
After preliminary common tests, the model of alternator must be identified for specific
testing to determine if alternator or regulator is defective.
2-27. ALTERNATOR TESTS
TM 9-2320-280-20-1
Table 2-2. Adaption of dual voltage alternator on a single voltage system
Dual Voltage Alternator
Single Voltage System
100 Amp
200 Amp
400 Amp
Ground wire afixed to regulator
base and 14 volt power stud
Ground wire afixed to regulator
base and 14 volt power stud
No ground wire afixed to
regulator or 14 volt power stud
Dual voltage 100, 200, and 400 amp alternators can be
installed in a single voltage system. See Table 2-2 for
hookup procedures.
NOTE
