Hudson 1955 Rambler, Техническое и сервисное руководство

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To test for open coils, connect the probes
to the two leads of each coil. If the lamp
fails to light, the coil is open and should
be replaced.
To test for grounds, place one probe on
the generator frame and the other on the
field coil terminals. If a ground is present,
the lamp will light and the coil should be
replaced.
Brush Holders
With test probes, check the insulated brush
holder to be sure it is not grounded. Touch
the insulated brush holder with one probe and
a convenient ground on the commutator end
plate with the other probe. If the lamp
lights, it indicates a grounded brush holder.
Inspect the brush holders for distortion
and improper alignment. The brushes should
slide freely and should be perfectly in line
with the commutator segments.
Brushes
Brushes that have been subjected to oil or
are worn to one-half or less of their
original length should be replaced.
When replacing brushes, it is necessary
to seat them so that they have 100 per cent
surface contacting the commutator. The
brushes should be sanded to obtain this fit.
This can be done by drawing a piece of No.
00 sandpaper between the commutator and brush
and against the brush holder. Do not sand too
much as it merely shortens brush life. After
sanding the brushes, blow the sand and carbon
dust out of the generator. The generator
should then be run under load long enough to
secure a perfect brush fit. Generators are
not to be tested for output until after the
brushes are seated.
Assembly of Generator
Pack the ball bearing 1/2 full with a high
melting point grease and soak the felts in
medium engine oil before assembly.
Generator Test
After the generator is assembled and the
brushes are properly fitted, the generator
should be bench tested under conditions of
speed, voltage, current, and temperature as
near as possible to its operation on the
engine before installation.
To check the field coil draw, connect a
battery and ammeter in series with the field
coils and connect a voltmeter across the
field coil terminals. Adjust the voltage to
the specified value and read the ammeter
which should be within the limits specified.
Any other reading indicates faulty field
coils or connections.
Check the motorizing draw. Connect an
ammeter and battery in series with the
armature terminal and the frame. Complete the
field circuit to ground and connect a
voltmeter from the armature terminal to the
frame. If the reading is too high, check the
bearings and armature for binding and correct
alignment.
Check the output with generator connected
as above. Drive the generator on the test
bench, or if none is available, on the
engine. If the output cannot be obtained or
if the speed is too high, inspect for high
resistance connections and for improper
brush seating.
Polarizing Generator
All generators should be polarized with the
battery before running. This can be done by
using a jumper wire momentarily from the
negative battery terminal to the armature
terminal of the generator with the field
circuit completed to ground.
Generator Specifications
Auto-Lite Model GGW-4801-F and GGW-4802-B
Volts - 6
Rotation—Clockwise at the Drive End
Control—Vibrating Type Current-Voltage
Regulator Rated Output-45 Amperes
Poles - 2
Brushes - 2
Brush Spring Tension-35 to 53 Ounces with
new brushes. Measure with scale hooked
in the hole in the end of the brush
arm. Pull on a line perpendicular to
the top of the brush and take the
reading just as the arm leaves the
brush.
End Play—.003" to .010"
Ground Polarity—Positive
Field Coil Draw-1.6 to 1.7 amperes at 5
volts. Measure from armature to field
terminals.
Motorizing Draw-5.0 to 5.5 amperes at 5
volts. Have field terminal grounded to
frame and measure from armature termi
nal to a ground on the frame.
Output Tests (Cold) —6.4 Volts, 0 Amperes
at 870 to 970 R.P.M.; *8.0 Volts, 45
Amperes at 1925 to 2125 R.P.M. (Hot)
—6.4 Volts, 0 Amperes at 950 to 1050
R.P.M.; *8.0 Volts, 45 Amperes at 2350
to 2550 R.P.M.
*Do not operate at more than 45 Amperes
for any length of time as to do so may
result in burned armature and field
windings.
VIBRATING CURRENT-VOLTAGE
REGULATORS (Auto-Lite)
"Hornet" and "Wasp" Series
The Auto-lite Model VBE-6101-A regulators
are used with shunt type generators and have
three units each with a separate function to
perform. These units are the circuit breaker
unit, the voltage regulator unit, and the
current limiting regulator unit.
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T E C H N I C A L S E R V I C E M A N U A L