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Replace side yokes or not?

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Old Dec 15, 2021 | 06:40 AM
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Default Replace side yokes or not?

Hi everyone

I pulled off the cover of my differential (original 77), and found this inside (see pics)…

Does this mean I need new side yokes?
The one without a ring is suposed to slide out easely I read, but it doesn’t…

1. What do you guys think?

2. Can I repair the yoke damage?

3. If not what are good side yokes (for the rest of my life… I’m 27 now.) Do I need to replacet hem both (because of balance etc.)

4. I’m Belgian so parts aren’t cheap here.
What about these?
https://www.ebay.com/itm/17361394575...0AAOSwy2pb1zFD




The right one has no ring (see next picture). And I can't see the groove were it sould be attached...

Found this on the bottom...

Left side is OK. I think.

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Old Dec 15, 2021 | 09:01 AM
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i believe the right yoke has half of a snap ring groove. the left end is cut at an angle. the right end is cut like a snap ring groove. right shaft is done...
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Old Dec 15, 2021 | 09:23 AM
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Replace both axles, they are shot. The cast hardening is gone and will only continue to wear down. Now most use Lone Star's rebuilt but they seem to be having trouble suppling them lately. New axles should be checked for dimension and hardness- I haven't checked any lately but the ones I did years ago were not good.
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Old Dec 15, 2021 | 06:23 PM
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Originally Posted by GTR1999
Replace both axles, they are shot. The cast hardening is gone and will only continue to wear down. Now most use Lone Star's rebuilt but they seem to be having trouble suppling them lately. New axles should be checked for dimension and hardness- I haven't checked any lately but the ones I did years ago were not good.
The product discription says '1963-1979'. So all the reproduction side yokes made for '1963-1979' are interchangable (I mean there not much difference in fitment)?
I'm just a streetdriver so the car won't see real 'abuse'.

https://www.ebay.com/itm/17361394575...nn9000b2800bh3

Will these fit? Don't know the manufacturer...
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Old Dec 15, 2021 | 06:54 PM
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They should fit. The question is with the quality of new and rebuilt axles sold today. There is no reference to material, hardness, face hardness, or snap ring location. Years ago I was given several new axles to test, they were all soft faced, the snap location varied from 010-030" they would be no better then the worn out axles in your diff now. I have not had any new axles in to see if the quality changed or not. The last new axles I used were from International Corvette and they were very good and expensive at $300 each but I believe they have closed. I tried reaching them several times and no answer. You are far away, getting the wrong axle will be expensive. What is the dimension on your axles from the face to snap ring?
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Old Dec 15, 2021 | 07:57 PM
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Originally Posted by GTR1999
You are far away, getting the wrong axle will be expensive. What is the dimension on your axles from the face to snap ring?
I may sound dumb, but what do you mean by 'face'?

Is it the length from the snap ring groove to the most outher part of the yoke (the points where the u bolts go in)?
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Old Dec 15, 2021 | 08:50 PM
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Originally Posted by Novusuhu
I may sound dumb, but what do you mean by 'face'?

Is it the length from the snap ring groove to the most outher part of the yoke (the points where the u bolts go in)?
If I understand what GTR is asking, he's looking for the distace from the INNER ends of the yokes to the snap ring grooves.
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Old Dec 16, 2021 | 02:23 AM
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I have to remove the yokes before I can measure it properly.
What should I use best? A slide hammer?

Last edited by Novusuhu; Dec 16, 2021 at 04:19 AM.
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Old Dec 16, 2021 | 03:59 AM
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Here is what mine looked like on rebuild. Allowed a lot of side movement !!!



I replaced both.

Last edited by CraigH; Apr 10, 2023 at 08:51 PM.
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Old Dec 16, 2021 | 09:28 AM
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Originally Posted by Novusuhu
I have to remove the yokes before I can measure it properly.
What should I use best? A slide hammer?
Normally, once the retaining ring is removed (you need a 90 degree tip snap ring pliers) they will slide out by hand. The face of the tip may be “mushroomed” from contact with the cross shaft and will be resistant to sliding through the spider gear splines. If you need to, use a slide hammer gently so you don’t damage the spider gear. If you have a Dremel, you can carefully trim the “mushroomed” material from the axle.
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Old Dec 16, 2021 | 10:53 AM
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Yes, you have to remove them to check. You don't need a slide hammer. The spider is harder than the mushroomed tip, drive out the axle with a piece of hardwood or brass. Since you are so far away you might be able to use a local machine ship to make a replacement hardened tip to rebuild yours. That is what I may have to do as well given lack of parts today. It would be worth it for you check and see. It will work as long as the wear isn't below the groove which yours don't appear to be.
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Old Dec 26, 2021 | 04:57 PM
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I managed to get them both out.
The one yoke that was stuck is grinded/worn down to the point that the groove is gone! That's probably why the ring was on the bottom.

I bought two new yokes. Will post some pics of the old and new ones side by side tomorrow.

I didn't know that these parts could wear out that bad...
I want to thank you guys for the replies and helpful info!
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Old Dec 27, 2021 | 06:31 PM
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Left two (old) & right two (new)
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Old Dec 27, 2021 | 07:57 PM
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For the new yokes can you measure from the face to snap ring and let us know what it is? Also are they hardened? Did you get a hardness measurement on the face of the axles? this is important, if you didn't you should get them checked before installing or you may be back where are now. I haven't used new axles in a long time and the last ones were junk, the dimension was off and they were not hardened. I took the word of the supplier- big mistake, and 3 sets wore out in under 1000 miles.
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Old Jan 2, 2022 | 05:52 PM
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Originally Posted by GTR1999
For the new yokes can you measure from the face to snap ring and let us know what it is? Also are they hardened? Did you get a hardness measurement on the face of the axles? this is important, if you didn't you should get them checked before installing or you may be back where are now. I haven't used new axles in a long time and the last ones were junk, the dimension was off and they were not hardened. I took the word of the supplier- big mistake, and 3 sets wore out in under 1000 miles.
These are the measurements (from face to snap ring).
I measured from each side of the snap ring groove to the face:
6 mm = 0,2362"
4 mm = 0,1575"

I didn't do a hardness measurement. The product disciption said they are 'heavier duty' then OEM.
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Old Jan 2, 2022 | 06:17 PM
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Originally Posted by Novusuhu
These are the measurements (from face to snap ring).
I measured from each side of the snap ring groove to the face:
6 mm = 0,2362"
4 mm = 0,1575"

I didn't do a hardness measurement. The product description said they are 'heavier duty' then OEM.
The Heavier Duty statement is meaningless marketing hype, so disregard it.

If we are on the same page and you measured from the face to the snap ring, not including the ring thickness and you have .236 on one and .157 on the other that is terrible. Again, if those are correct measurements, it shows me complete lack of QC on a part that should be in the 185-200" range. The 236 is really questionable and I don't know how you could get the ring installed. The 157 would be very loose. To compare, if they were used in a correctly tuned and balanced posi you would not get the snap ring on the 236 and the 157 would have about 030-040 endplay. Again, if these are correct measurements then I would really question the hardness of the face since it tells me they have no clue on how to make them and would not use them until you can confirm the hardness.
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Old Jan 2, 2022 | 06:50 PM
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Originally Posted by GTR1999
The Heavier Duty statement is meaningless marketing hype, so disregard it.

If we are on the same page and you measured from the face to the snap ring, not including the ring thickness and you have .236 on one and .157 on the other that is terrible. Again, if those are correct measurements, it shows me complete lack of QC on a part that should be in the 185-200" range.
Okay, I didn't know the measurent needed to be so accurate.
Will check again tommorow and let you know.
The two measurements were on the same yoke (to be clear). Sorry for the confusion.
I ring was not installed when I measured it...

I will measure again from the face to the snap ring, not including the ring thickness, as you said.
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To Replace side yokes or not?

Old Jan 3, 2022 | 04:37 PM
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Originally Posted by GTR1999
If we are on the same page and you measured from the face to the snap ring, not including the ring thickness.
I did a more acurate measurement and got the following:
4,6 mm = 0,1811"
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Old Jan 3, 2022 | 07:53 PM
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GTR1999....Thanks for letting us know about all the "Junk" that is being sold as "Heavy Duty/O.E.M. Replacement".
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Old Jan 3, 2022 | 09:03 PM
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following this closely,,,
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