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Car Forum / Antique and Collectibles / Studebaker / April 2005

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50 Champ not recharging

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John - 10 Apr 2005 23:42 GMT
Well even though the guy I bought the car from said the master cylinder was
leaking, we decided to skip that step because no amount of pumping could
get it to leak, and the reservoir was completely full.  Fortunately the
only problem with the brake lights was that the wire had come loose from
the switch.  Nice and simple.

But I found out that the battery isn't being recharged.  The amp meter only
goes in the -, never the positive, and running the car doesn't seem to
replenish the juice used by the starter.

The manual describes how to check if it is the generator or the voltage
regulator causing the problem by grounding the field terminal of the
regulator and revving the engine.  If the output doesn't increase, it's the
generator, if it does, it's the regulator.

Has anyone ever performed this test?  Is there anything I should be wary of
while performing it?
64daytonaht - 11 Apr 2005 00:02 GMT
You've actually put a voltage tester onto the charging system to see if it
is charging?

Bo

> Well even though the guy I bought the car from said the master cylinder was
> leaking, we decided to skip that step because no amount of pumping could
[quoted text clipped - 13 lines]
> Has anyone ever performed this test?  Is there anything I should be wary of
> while performing it?
Jeff DeWitt - 11 Apr 2005 04:29 GMT
Yes, I've done it and it works.  If the car hasn't been driven much in a
while I'd bet that there is a thin film of corrosion covering the
commutator of the generator.  Take a look in the back of the generator
at the brass bars and see if they are bright or dull, dark or even greenish.

If you take the generator apart (it's really pretty simple), use some
fine sandpaper to brighten up the commutator and reassemble it the thing
will probably work.  Also make sure the voltage regulator is securely
attached to the fender or firewall.  If it's loose it won't ground
properly and the car won't charge... don't ask me how I know this <G>

> Well even though the guy I bought the car from said the master cylinder was
> leaking, we decided to skip that step because no amount of pumping could
[quoted text clipped - 13 lines]
> Has anyone ever performed this test?  Is there anything I should be wary of
> while performing it?
Jeff Rice - 11 Apr 2005 12:25 GMT
One other thing to do to the commutator when it is apart is to clean out the
grooves between each section.
The conductor can get scraped over the gap and electrically connect two or
more fields.
Just don't use a conductive grit sandpaper.
Generator shops have a small lathe to do this on and they surface the
commutator and clean out the grooves.
I use a flat file and a jewelers file.
Jeff

"Jeff DeWitt" wrote.
> Yes, I've done it and it works.  If the car hasn't been driven much in a
> while I'd bet that there is a thin film of corrosion covering the
[quoted text clipped - 24 lines]
>> Has anyone ever performed this test?  Is there anything I should be wary
>> of while performing it?
--Shiva-- - 11 Apr 2005 21:58 GMT
On Mon, 11 Apr 2005 11:25:15 GMT,  you wrote:

>I use a flat file and a jewelers file.
>Jeff
break an old hacksaw blade.. grind off ALL but one tooth. works
real good..

    --Shiva--
   
   
Bill Glass - 11 Apr 2005 07:04 GMT
> Well even though the guy I bought the car from said the master cylinder was
> leaking, we decided to skip that step because no amount of pumping could
[quoted text clipped - 13 lines]
> Has anyone ever performed this test?  Is there anything I should be wary of
> while performing it?
Bill Glass - 11 Apr 2005 07:14 GMT
First of all did you re-polarize the battery/generator, everytime  they
are disconnected they need to be polarized, not knowing which generator
you have I cannot give you the proceedure, which takes less than
1/30 of a second. DO not use sand pper you mustuse emery cloth, takes
about four to five min. Unless the generaor knows whic way to turn it
will not charge. Is the battery up to full charge, get a cheap
hygrometer and check how many miniature pinpong balls float to the top.

Also purchse one of those battery tools, it cleans the posts, and it
cleans the cable inside the connector. If for some reason you are
getting some current across the car willl run, however with little or
no curren car will not. One othe place to check is follow the negative
wire doen from the battery and make sure it is conneced properly to the
battery.

Since the cae sis sit you also might have a short somewher in the wire
loom. Cheking that can be a PIA, I am am going with my gut feeking its
one o the battery cables

BG
blacklarkviii carolina.rr.com> - 12 Apr 2005 02:18 GMT
I would say it needs to be polarized if the circuit has been broken at any
place.

Henry
 
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