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Old 09-24-2022, 12:24 PM #1
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alternator rebuild kit
Alternator whine/bearing noise on my 96 4runner. I replaced with one from my parts bin. I would like to rebuild the bad alternator and keep it for back up/spare parts.

I see some rebuild kits online. Has anyone done this and is there a preferred vendor?

Thanks in advance,

Tom
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Old 09-24-2022, 01:52 PM #2
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Quote:
Originally Posted by jmsdad View Post
Alternator whine/bearing noise on my 96 4runner. I replaced with one from my parts bin. I would like to rebuild the bad alternator and keep it for back up/spare parts.

I see some rebuild kits online. Has anyone done this and is there a preferred vendor?

Thanks in advance,

Tom
Sub'd for info. I want to do the same thing with my old OEM alt.
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Old 09-24-2022, 06:06 PM #3
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Placed an order for this kit...


Alternator Rebuild Kit 1996-1998 Toyota 4Runner with Denso 70 Amp Alternator - Alternator Rebuild Kits
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Old 09-24-2022, 07:08 PM #4
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Not sure how those parts kit will last.

I know when I rebuild a few I am going to use
Rebuild alternator with pics an OEM Parts Numbers Included

You do have to watch as there are 2 different alts for the 3rd gen. Early years 1996-1998 and 1999 to 2002..
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7 3rd gens listed in the build thread (2 are parts mobiles)
Build Thread: https://www.toyota-4runner.org/3rd-g...os-builds.html
Brillo's Bucket Fluid Ex changer: https://www.toyota-4runner.org/3rd-g...ml#post3358086
Sparks Plugs Wire and Coil Information: https://www.toyota-4runner.org/3rd-g...on-5vz-fe.html
Last edited by brillo_76; 09-24-2022 at 07:13 PM.
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Old 09-24-2022, 11:00 PM #5
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My original alt died after about 320k miles. The copper sliprings had worn through. Unfortunately, they are very expensive to replace, thus making a rebuild uneconomic. The best alternative is to buy a toyota rebuilt alt.
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Old 09-25-2022, 07:54 AM #6
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Quote:
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My original alt died after about 320k miles. The copper sliprings had worn through. Unfortunately, they are very expensive to replace, thus making a rebuild uneconomic. The best alternative is to buy a toyota rebuilt alt.
Yes, if you have armature damage, its not worth fixing. Same would go for a cracked case. Probably best to verify the alternator is worth rebuilding before buying parts.. I agree. :-)
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7 3rd gens listed in the build thread (2 are parts mobiles)
Build Thread: https://www.toyota-4runner.org/3rd-g...os-builds.html
Brillo's Bucket Fluid Ex changer: https://www.toyota-4runner.org/3rd-g...ml#post3358086
Sparks Plugs Wire and Coil Information: https://www.toyota-4runner.org/3rd-g...on-5vz-fe.html
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Old 09-25-2022, 02:52 PM #7
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There should be a jobber number on the bearing seal which is the part number to order and then just get the brushes at the dealer.

For the 70a Alt I have the bearing sizes as another way to order them.


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Old 09-25-2022, 03:42 PM #8
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Quote:
Originally Posted by 19963.4lsr5 View Post
There should be a jobber number on the bearing seal which is the part number to order and then just get the brushes at the dealer.

For the 70a Alt I have the bearing sizes as another way to order them.


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I am wondering if the 90 amp ones Have a different bearing, brushes and regulator. etc.. As i have both 70amp alts and 90 amp alts in my fleet. Looks like I need to tear a few of those apart and figure these out rebuild etc. I have many around here of both..
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7 3rd gens listed in the build thread (2 are parts mobiles)
Build Thread: https://www.toyota-4runner.org/3rd-g...os-builds.html
Brillo's Bucket Fluid Ex changer: https://www.toyota-4runner.org/3rd-g...ml#post3358086
Sparks Plugs Wire and Coil Information: https://www.toyota-4runner.org/3rd-g...on-5vz-fe.html
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Old 09-25-2022, 03:46 PM #9
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There should be a jobber number on the bearing seal which is the part number to order and then just get the brushes at the dealer.

For the 70a Alt I have the bearing sizes as another way to order them.


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