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10.5 inch...

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Jim Warman

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Some of you might not be aware that there has been a change in the pinion nut/crush sleeve for the 10.5 Ford rear diff. The new crush sleeve is the same as the F150 crush sleeve and (according to documentation) requires the use of a pinion nut with a white backing rather than blue. This new crush sleeve appears to crush very easily (and quickly) - I overcrushed my first sleeve in a long, long time.

 

I'm assuming that you could use the old nut/crush sleeve part numbers on a new pinion.

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I think there's been a few pinion bearings change up... 8.8 aluminum is one I recall. That's not too bad as long as you don't try to mix cups and cones. Using the wrong pinion nut with the wrong crush sleeve is going to be way too easy to do - come pinion seal time.

 

FWIW, I have no idea how critical the nuts are - but I dont want to find out the expensive way.

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