TEST . . .
DO NOT START ENGINE!
1 .Turn on master switch
2 . Now read voltmeter
. It should read 23 to 25 volts.
If it reads low or zero, repair or replace master
switch
3 . When you get a 24-volt reading, turn OFF master switch,
disconnect red voltmeter lead C1 from sensing lead con-
nection, and reconnect lead between the master switch and
4. Now repeat the hookup on test no. 1. Turn on master
switch and run engine at 1000 to 1200 rpm. The voltmeter
should show 28 volts (or voltage designated by your
vehicle specification)
5 . To adjust voltage output, remove plug from front flange
and adjust until voltmeter
shows 28 volts. Turning
screw counterclockwise increases output voltage, while
clockwise decreases it
6. If alternator cannot be adjusted, replace it
