nt at speeds above 8-10 miles per hour. If no
current is obtained, stop the engine. If the cutout trouble consisted
of an open circuit in one of its windings, or in the points not
closing, due to dirt or a binding armature, or if there is an
open-circuit in the charging line, the generator will, of course, have
been running on open-circuit. This will cause the fuse in the shunt
field circuit to blow if there is such a fuse, and if there is no such
fuse, the shunt field coils may be burned open, or the insulation on
the field coil wires may have become overheated to a point at which it
burns and carbonizes, and causes a short-circuit between wires. Such
troubles will, of course, prevent a generator from building up when
the cutout wires are disconnected and their ends held together.

If there is a ground in the cutout, or between the cutout and the
generator, the generator will very likely be unable to generate (if a
"one-wire" system is used on the car). If there is some defect in the
generator-such as dirty commutator, high mica, brushes not touching,
commutator dirty, or loose brushes, brushes too far from neutral,
grounded brushes, brushes not well ground in, wrong type of brushes,
grounded commutator or armature windings, short-circuited commutator
or armature windings, open-circuited armature windings, grounded field
windings, short-circuited field windings, open-circuit or poor
connections in field circuit, one or more field coil connections
reversed, wrong type of armature or field coils used in repairing
generator, generator drive mechanism broken-then the generator will
not build up.

If no charging current is, therefore, obtained when the generator and
ammeter wires are disconnected from the cutout and their ends held
together, there may be a ground or short-circuit in the cutout
windings or in the circuit between the generator and the cutout, or
the generator may be defective, due to having been operated on
open-circuit, or due to troubles as described in the foregoing
paragraph. The presence of a ground or short in the circuit between
the generator and cutout or in the cutout may be determined by
disconnected the wire from the generator, disconnecting the battery
(or ammeter) wire from the cutout, and running a separate extra wire
from the generator to the wire removed from the cutout. Then start the
engine again. If a charging current is obtained, there is a ground or
short either in the cutout or in the