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Old 12-15-2013, 04:11 PM
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charging problem

i have a 34 chevy with electrical issue hope someone can help,someone added a cutout to the generator and did away with voltage regulator and also added a solenoid using a push button instead of the floor pedal and i can,t figure out how to make the battery charge,i replaced the battery,had the generator and starter checked out both are good.thanks in advance for your help,

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Old 12-15-2013, 04:24 PM
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Quote:
Originally Posted by blue rose View Post
i have a 34 chevy with electrical issue hope someone can help,someone added a cutout to the generator and did away with voltage regulator and also added a solenoid using a push button instead of the floor pedal and i can,t figure out how to make the battery charge,i replaced the battery,had the generator and starter checked out both are good.thanks in advance for your help,
Locating a diagram for the vehicle would be a good start. I don't know much about generators as they were a little before my days but I cant see how it would work effectively without the regulator. I would highly recommend converting it to a 10si or 12si gm alternator if keeping it all original is not a priority. They are readily available and easy to service and adapt.
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Old 12-15-2013, 06:07 PM
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Here you go...
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Old 12-15-2013, 08:13 PM
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light switch

Refer to the drawing provided by Denny.

If you have the original generator it will have (3) brushes. The (2) across from each other are the armature brushes and the 3rd brush is the field brush.
The generator output is controlled by (2) things.

---- Field resistor --- A resistor is located on the light switch. This resistor is connected to the field of the generator and ground. When the light switch is on or moved to the first detent a contact closes (shunts the resistor) and grounds the field of the generator. This provides full voltage to the generator field thus making it go to full output.

----Circuit breaker--- A voltage sensitive relay opens the main output (armature) of the generator when the battery voltage reaches a set point (7.3 volts). The relay closes again when the voltage drops below a set point (6.5 volts).

Test to see if the field resistor is connected by grounding the field terminal to see if the generator charges. If the generator charges the field resistor or light switch is not working.
A better regulator can be installed that does not rely on the light switch and has the circuit breaker in a single housing.

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Old 12-15-2013, 08:31 PM
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And on some that third brush was adjustable to vary the total output of the generator, if I'm not mistaken...
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Old 12-16-2013, 08:15 AM
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thanks to all for your help
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Old 12-16-2013, 08:54 AM
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generator

if i recall correctly they do make alt that look like gen's and are 6v.. Mac's or LMC..
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Old 12-16-2013, 09:04 AM
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newer 6 v system

When I rewired a 36 pontiac I got a 6 V generator and regulator from an early 50's chevy pickup and had to do a little rework to the generator mounting bracket. to most people it looks original.

My model T speedster used a cut out relay. I installed a Diode in the relay can, the diode is more reliable.
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