H
Disconnect harness at alternator. With jumper wires, connect
pin E of alternator to a battery negative terminal and pin D
of alternator to the same battery positive terminal to apply 12
volts dc to the alternator field. Run vehicle engine at idle speed,
set multimeter on ac volts scale, place red lead on pin A and
negative lead on pin B, and note voltage reading. Then place
red lead on pin C and black lead on pin A and note voltage
reading. All readings should be between 30 and 34 volts. If these
voltages are present, repair or replace cable from alternator to
rectifier (p 6-64). If these voltages are not present or vary con-
siderably, replace generator (alternator) (p 6-4).
I
Disconnect rectifier-to-regulator harness at rectifier. With
jumper wires, connect pin E of rectifier to a battery negative
terminal and pin B of harness to same battery positive terminal.
With vehicle engine running at idle speed and multimeter set
on dc volts scale, place red lead on rectifier pin C and black lead
to ground. Multimeter reading should be between 30 and 34
volts. If this voltage is not present, replace rectifier (p 6-7). If
this voltage is present, reconnect harness and go to step J.
TA312702
2-125
Change 1
TM 9-2350-267-20
