1990 Camry Alternator - Amp question, and should I just replace the brushes?

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Old 17 Feb 2006, 12:01 am   #1 (permalink)
abbottim
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Default 1990 Camry Alternator - Amp question, and should I just replace the brushes?

I am confused about which alternator to get to replace the one I have
in my V6 Wagon: 70amp or 80amp.

Or should I just replace the brushes in the one I have -- is it real
easy to do that?

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Old 17 Feb 2006, 07:37 am   #2 (permalink)
Jason James
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Default Re: 1990 Camry Alternator - Amp question, and should I just replace the brushes?


"abbottim" <abbottim@yahoo.com> wrote in message
news:1140155096.713027.168680@o13g2000cwo.googlegr oups.com...
> I am confused about which alternator to get to replace the one I have
> in my V6 Wagon: 70amp or 80amp.
>
> Or should I just replace the brushes in the one I have -- is it real
> easy to do that?


Provided the case and mounting points are the same. the 80Amp will be fine.
My handbook inidcates the alt is 70A for my '96 manual or automatic trans.
The fact that an alternator is capable of higher current does not effect the
car in any way,..it's actually a good thing for you will have extra amperage
available if needed: eg after a lengthy discharge of the battery.

Apart from the ball-bearings, the slip=rings and the brushes are the other
parts that can wear out. Even then the bearings will go for a long time once
they start to get a little noisy. The brushe-length canbe measured by
removing the regulator black module on the alt rear panel.While they are
out, use a torch to look inside at the two brass slip rings. They should be
fairly smooth with no evidence of burning or heavy scoring (wear) Remove
and replace the reg/brush assembley with care making sure you slide the
bottom edge of the reg/brush assembley in first by tilting the
assembley,..then rock the top edge downwards to align the screw-holes. There
will be some resistance s the brushes contact their slip-rings on the rotor.

Other damage: there are 6 power-diodes and 3 auxiliary diodes in alternators
which can fail. This is usually manifest by poor charging of battery and a
battery-warning light.

The length of the two carbon brushe should be greater than 2/10s of an
inch,..personanlly I replace them at 1/4 inch.

Jason


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Old 17 Feb 2006, 12:13 pm   #3 (permalink)
Daniel
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Default Re: 1990 Camry Alternator - Amp question, and should I just replace the brushes?

If that's the original alternator, just try replacing the brushes first

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Old 17 Feb 2006, 12:19 pm   #4 (permalink)
Alex
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Default Re: 1990 Camry Alternator - Amp question, and should I just replace the brushes?

I'd pull it and take it to a parts store that can test it. You may find the
brushes if you live in a city that has an alternator/starter store. Some
can be tricky to reassemble. It just depends on your skill. I probably
could do it, but I'd just get it rebuilt.

"abbottim" <abbottim@yahoo.com> wrote in message
news:1140155096.713027.168680@o13g2000cwo.googlegr oups.com...
>I am confused about which alternator to get to replace the one I have
> in my V6 Wagon: 70amp or 80amp.
>
> Or should I just replace the brushes in the one I have -- is it real
> easy to do that?
>



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Old 19 Feb 2006, 09:05 am   #5 (permalink)
Daniel
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Default Re: 1990 Camry Alternator - Amp question, and should I just replace the brushes?

Many rebuilt alternators are junk.
Had a rebuilt generator once, must have replaced it fifteen times under
the "lifetime warranty", then finally bought a factory part and never
had another problem.
Toyota part number "27370-35060", is for the brushes and holder, retail
is about $16 - just double check part number for your year.

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Old 19 Feb 2006, 12:52 pm   #6 (permalink)
Alex
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Default Re: 1990 Camry Alternator - Amp question, and should I just replace the brushes?

Me too. Many rebuilt failures, but never 15. Did have 5 on a Chevy Pickup
once. I get the best price at the auto parts store, and best reliability at
a neighborhood starter guy.

"Daniel" <nospampls2002@yahoo.com> wrote in message
news:1140361523.532231.216040@g14g2000cwa.googlegr oups.com...
> Many rebuilt alternators are junk.
> Had a rebuilt generator once, must have replaced it fifteen times under
> the "lifetime warranty", then finally bought a factory part and never



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Old 19 Feb 2006, 05:04 pm   #7 (permalink)
Wolfgang
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Default Re: 1990 Camry Alternator - Amp question, and should I just replace the brushes?

Agree on the mass market "rebuilt" ones with lifetime warrarnty being junk -
unless you like being stranded and replacing the alternator several times!
Unless old one is completely toast try to rebuild it --- same with the
starter motor.

"Daniel" <nospampls2002@yahoo.com> wrote in message
news:1140361523.532231.216040@g14g2000cwa.googlegr oups.com...
> Many rebuilt alternators are junk.
> Had a rebuilt generator once, must have replaced it fifteen times under
> the "lifetime warranty", then finally bought a factory part and never
> had another problem.
> Toyota part number "27370-35060", is for the brushes and holder, retail
> is about $16 - just double check part number for your year.
>



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Old 19 Feb 2006, 06:33 pm   #8 (permalink)
Jason James
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Default Re: 1990 Camry Alternator - Amp question, and should I just replace the brushes?


"Daniel" <nospampls2002@yahoo.com> wrote in message
news:1140361523.532231.216040@g14g2000cwa.googlegr oups.com...
> Many rebuilt alternators are junk.
> Had a rebuilt generator once, must have replaced it fifteen times under
> the "lifetime warranty", then finally bought a factory part and never
> had another problem.
> Toyota part number "27370-35060", is for the brushes and holder, retail
> is about $16 - just double check part number for your year.


I had a "reconditioned" starter once,..it failed shortly later. I found it
had a fractured solder-joint around a winding connection. If I had to guess
I'd say a lot of intermittants in alternators and starters are this kind of
fault caused thru vibration and possibly heat in service prior.

Jason


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