Hudson 1955 Rambler, Technical & Service Manual

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always check car wiring before installing a new
regulator. Otherwise the new regulator may also
fail in the same way.
BURNED RELAY CONTACT POINTS: This is due to
reversed generator polarity. Generator polarity
must be corrected after any checks of the
regulator or generator, or after disconnecting
and reconnecting leads.
Cleaning Contact Points
The contact points of a regulator will not
operate indefinitely without some attention. It
has been found that a great majority of all
regulator trouble can be eliminated by a simple
cleaning of the contact points plus some
possible readjustment. The flat points should be
cleaned with a spoon or riffler file. The flat
point is in the upper contact bracket so the
bracket must be removed for cleaning the points.
A flat file cannot be used successfully to clean
the flat contact points since it will not touch
the center of the flat point where point wear is
most apt to occur. NEVER USE EMERY CLOTH OR
SANDPAPER TO CLEAN THE CONTACT POINTS.
FIGURE 11— Cleaning Contact Points
Current and Voltage Regulator
Check and Adjustments
Procedure: For best results, the following steps
should be taken in the sequence given.
(1) Bring voltage regulator to operating temper-
ature, (2) Check voltage regulator, (3) Check
cut-out relay, (4) Bring current regulator to
operating temperature, (5) Check current regula-
tor.
Voltage Regulator Check and Adjustments
Two checks and adjustments are required on the
voltage regulator: Air gap and voltage setting
Air Gap—Push down on armature until contact
points are just touching. Measure air gap
between armature and winding core (Fig. 12).
Adjust by loosening contact mounting screws
and raising or lowering contact mounting
bracket as required. Be sure the contact
points are aligned and screws securely
tightened after adjustment.
FIGURE 12— Voltage Regulator Air Gap Check
and Adjustment
Voltage Setting—Fixed 1/4 Ohm Resistance
Method
Connect a 1/4 ohm fixed resistor (not less
than 25 watts) into the charging circuit at
"Bat" terminal of regulator (in series with
battery) as in Figure 13.
Connect a voltmeter from regulator "Bat"
terminal to ground.
Operate generator at specified speed for
15 minutes. Regulator cover must be in place.
(Regulator may now be considered to be at
operating temperature.)
FIGURE 13— Fixed Resistance and Voltmeter
Connections to Check Voltage
Regulator Settings
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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