Yukon 3.73 installation problems. Help APPRECIATED!

[ford4life76]

Hey guys, my factory pinion gear took a dump on my 01 f350 SRW because of inner bearing failure. Anyway, I purchased the Yukon 3.73 performance set for 10.5 ford/sterling rear (which is what I have) and my mechanic just got everything almost back together but there is just one problem. The outer pinion bearing will not fit on the new pinion shaft, tried three diffrent pinion bearings we had and none fit on the Yukon but all fit in the OEM pinion.

We then took a set of dial calipers and checked the shaft and the oem pinion shaft where the outer pinion bearing would ride and it measured 1.312 & the Yukon is 1.318.
Anybody have some info that I maybe don't know about (Yukon uses a different bearing)? According to all the stampings and part number on the box this is the correct pinion. This is the kit that is made specifically for the 10.5, not the one that is 10.25/10.5 interchangeable so that is not the issue.

Just can't figure out the .006 difference

Thanks




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[suprhlr]

sounds like it didn't get ground to spec. that bearing will not go on with .006 interfearance. Your going to have to get a new gear set

 

[Jonnydime]

Get a pinion bearing for a 10.25. The Yukon gears are 10.25 gears. Everything is the same except for the pinion bearing.