9" pinion yoke pre load setting?

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Woodscaper
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9" pinion yoke pre load setting?

Post by Woodscaper »

I need to swap the pinion yoke on the rear diff. The more I look into it the more questions I have. How do you determine the preload on the old yoke and make sure the new one is set properly? is it a matter of torqe or pinion drag or what ? Do I need to pull the center section to do it or just pull the nut and put the new one on ?
Any tips would be helpfull.
Thanks.
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Woodscaper
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Re: 9" pinion yoke pre load setting?

Post by Woodscaper »

Thats more like it, nice and easy. Thanks
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cobshane
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Re: 9" pinion yoke pre load setting?

Post by cobshane »

I go just a hair passed your mark just to make sure there is still tension in the crush sleeve.
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Jesus_man
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Re: 9" pinion yoke pre load setting?

Post by Jesus_man »

Or replace the crush sleeve.
1973 Bronco, 351 SEFI, Locked, discs, 35's ZF-5spd and Atlas 4spd. 235:1 Crawl Ratio. It may be ugly, but it's slow.
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Jesus_man
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Re: 9" pinion yoke pre load setting?

Post by Jesus_man »

zillacon wrote:Then you have to pull the pinion housing out of the diff to reset preload. Above processes are perfectly okay to do. Not to mention unless you do gear set-ups most people don't have inch lbs tourqe wrenches.


yes, you are correct. I had forgotten where the crush sleeve was.
1973 Bronco, 351 SEFI, Locked, discs, 35's ZF-5spd and Atlas 4spd. 235:1 Crawl Ratio. It may be ugly, but it's slow.
http://www.ucora.org
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Woodscaper
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Re: 9" pinion yoke pre load setting?

Post by Woodscaper »

Ok so, I either went half a turn to far or half a turn to short? It seems to be real tight (the nut) I put my torqe wrench on it just to see about how tight it was and its about 120 ftlb now, is there a typical torqe rang? Should I leave it or go the half turn more ?
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crawlercreations
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Re: 9" pinion yoke pre load setting?

Post by crawlercreations »

150-175 is pretty good. As long as your rotational torque is within spec.
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