1.
Start and run engine at 1000 to 1200 rpm
2.
Turn load bank switch
on
3.
Adjust load bank knobs
and 20 until ammeter
shows 60 amperes
4.
Turn voltmeter switch
to 20. . . then 10 . . . and finally 1-volt posi-
tion until you get a reading on voltmeter
If reading is more than
1.0 volt, turn OFF engine you have a voltage loss
5. Examine all connections and the cable itself between alternator and
batteries for looseness, corrosion, frayed wires, bad cuts or dirt.
After cleaning, tightening, or replacing bad cable, test again. The
limit is 1.0 volt
6. If you still get more than 1.0 volt . . .
Disconnect black voltmeter lead C2 from the battery + post and hook it
to alternator ground terminal bolt. Now take red voltmeter lead C1
from alternator output terminal and touch it to alternator cable
at terminal block . . . then at the starter switch . . . and at the
battery. At each point, watch for a sudden voltage jump. If you
find such a point, you've found the trouble. If each point has
a drop of 1.0 volt or less and alternator output is still less
than 27 volts, your next step is to test the alternator ground
cable
