TEST . . .
1 . Start and run engine at 1000 to 1200 rpm (high idle) until smooth
2 . Turn field rheostat
clockwise slowly. Watch ammeter
for
should read the cutout relay closing
voltage between 24.5 and 26.5 volts at needle flick
3 . The ammeter will show from 2 to 15 amperes at closing depending
on battery condition
4 . After you have relay closing voltage turn rheostat
counter-
clockwise slowly. Watch ammeter
needle as it travels left
past zero to a point where it jumps back to zero
5 . Cutout relay opening amperage is ammeter reading noted just
before needle jumps back to zero
6 . If relay doesn't close between 24.5 and 26.5 volts or doesn't
open between 11 and 15 amperes, replace regulator