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Old 07-27-2020, 01:13 PM   #1
buick8791
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Buick GN 87 alternator

I have plan to repair the alternator, which I have in the box in our store. It is the genuine GN 87 120 A alternator CS 144 unit. The broblem is, that I have lost the two spacers/collars, which belongs to the front bearings, before the bearing and after it.

So, where I can find them? If there is not the source to purchase them somewhere, so what is the best choice for an new alternator from RockAuto?

Thanks in forward!
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Old 07-27-2020, 05:48 PM   #2
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Re: Buick GN 87 alternator

Any alternator/starter repair shops near you?
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Old 07-29-2020, 01:03 PM   #3
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Re: Buick GN 87 alternator

Thanks for your answer!

Yes, I have shops quite near, about 30 kilometers. I will ask them. But anyway,
I could guess, that they havenīt any parts for AC Delco cs 144 alternator.
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Old 07-29-2020, 04:31 PM   #4
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Re: Buick GN 87 alternator

If its just spacers/collars then anyone that deals with electric motors or the like should be able to source what you need.
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Old 08-02-2020, 10:03 AM   #5
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Re: Buick GN 87 alternator

hanks for your advice! Yes , it is the spacers/collars in question. RockAuto has the rectifier in to this alternator and I have the feeling that the old regulator is ok.
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Old 08-04-2020, 08:12 AM   #6
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Re: Buick GN 87 alternator

IIRC, the front end is just a 203 bearing, and any motor shop should have OR/IR spacers, Belleville and wavy spring washers for those, or they shouldn't even be in business. If there isn't anyone nearby, you could search the web: https://catalog.lesjoforsab.com/ww-39-5x33x0-43x3
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Old 08-05-2020, 07:13 AM   #7
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Re: Buick GN 87 alternator

Thanks!

I will ask them..
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Old 08-18-2020, 01:59 PM   #8
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Re: Buick GN 87 alternator

Hi all,

I will ask once again, what is the reasonable good choice for Buick GN 120 A alternator?

What brand, Ac Delco or what and from where?

Tanks forward!!
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Old 09-05-2020, 09:12 AM   #9
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Re: Buick GN 87 alternator

Hi all,

I found the original collars/spacers in my own store, when going trough the all boxes again, where I have GN parts! I found also the brand new rectifier bridge for the alternator in question.

Thanks for the help for all!
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