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Discussion Starter #1
Help.

In installing my pinion today on my full size 8.875 12 bolt, it appears that when bottomed, the Spicer 1350 yoke I've purchaced sits out rather far from the housing. Also, the flinger does not come around the outer casting edge. Pretty much is flush with the edge. Pretty big gap and I can see right in at the yokes seal surface.

When comparing with the stock 1310 flinger, the 1350's is a good bit larger in diameter.

Do I have the wrong yoke? Is this a truck part or what? It was sold as being for a 12 bolt, no other details. The part number is Spicer 3-4-8681-1. I have the larger ID seal to match.

Will it matter if the flinger does not come right around the housing?

I'm doing the solid spacer instead of the crush sleeve, so I figure I can come back later and replace it with the proper yoke if needed.

Any thoughts?

Cheers, Mark.
 

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The slinger diameter is okay. Its purpose is to protect the seal from rocks & gravel hitting it.

There is usually 1/8 inch of clearance between the slinger and case. And the slinger is up against the yoke edge or flange.

Maybe other specialists will give their knowledge.
 

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Most 1350 yokes don't even have the guard on them. The truck and car 12 bolt use the same yokes, so there is no difference there. Is this yoke for a 12 bolt or for the 8.5 10 bolt? You said that you have a larger seal, what do you mean by that?
 

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Discussion Starter #5
Thanks for the comments,

There's far more than 1/8 clearance between the flinger and case, and it's only just flush with the housing, but if it's only real purpose is keeping flying gravel and debris away from the seal, then I figure it should be fine. I think the old 1310 flinger actually came around and over the housing slightly.

Yes BGH, it originally did not come with the flinger, I ordered it aftarwards. The old 1310 flinger will not work. I actually looked up the part number mentioned once, from a Spicer epartslist and it was for a 12 bolt.

The 1350's spline flange is way beefier, and thus has a larger diameter sealing surface than the 1310. The pinion seal has a larger ID to match.

Cheers, Mark.
 

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Discussion Starter #7
Freddie, Do you think it will be ok to continue on this path? I do have what appears to be the correct seal.

Or should I just order the correct yoke for the 12 bolt?

Thanks for the info,

MC.
 

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That yoke will work fine with the 12 bolt. If you order another yoke you will probably get the same thing. This yoke is actually stronger than a 12 bolt yoke because it is thicker. Keep going the way you are. It is just a shield for the seal and doesn't really matter. As long as the bearing preload is correct and everything is seated well then it will work great.
 

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Discussion Starter #9
Learning something new every day!
I'll stay with it.

Thanks for the replys everyone,
Cheers, Mark.
 

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That is actually an 8.5 yoke with a pinion seal for the front of a 4X4. It works with the 12 bolt as long as you use the special seal.
So if the seal ever needs to be replaced, which one do you buy? Which vehicle do you tell your parts guy you have?
 

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You write down the seal part number or keep the box flap and write on it rear yolk, so later you can get the same seal.
 

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I've got a new seal with the same yoke (Spicer 3-4-8681-1), but no box or part number that I could see on it.
 
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