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Old October 25th, 2013, 05:20 AM   #1
jbeery78
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usa standard ford 10.25

Just got my new rear end gears this week, USA standard 5.38s for the sterling in my 78. Getting ready to set up, I noticed the outer pinion bearing won't slip down far enough... like the pinion is only machined for a slip fit to the base of the yoke spline. At least 4+5 thou difference. Anyone ever run into this, was gonna give a call to Randys R&P this morning hope this gets taken care of.

Is this what I get for being a cheap ass?? Maybe I ought to just send these back and get yukons.
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Old October 25th, 2013, 05:39 AM   #2
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pics? they are a press fit so they wont just slide on
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Old October 25th, 2013, 05:46 AM   #3
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Not the outer.... I know the inner is a press fit... this is an awful long way to press a bearing. Plus once I slide the pinion yoke on there isn't near enough thread to pull it down.

Having trouble uploading pics on the phone I'll try it at work this morning.

My old pinion is a slip fit on the outer... as is every other one I've done... not sure what happened on this one though.
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Old October 25th, 2013, 05:55 AM   #4
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There are short pinion and long pinion sterling axles, I believe the change was in '93.

I'm not sure if the bearings are different between the two, but the yokes are different.

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Old October 25th, 2013, 05:58 AM   #5
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Yup I've got all long pinion stuff, I'm replacing an old long pinion set with a new long pinion set. From what I can find this axle uses all the same bearings for a big number of years.
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Old October 25th, 2013, 06:12 AM   #6
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Quote:
Originally Posted by jbeery78 View Post
Not the outer.... I know the inner is a press fit... this is an awful long way to press a bearing. Plus once I slide the pinion yoke on there isn't near enough thread to pull it down.

Having trouble uploading pics on the phone I'll try it at work this morning.

My old pinion is a slip fit on the outer... as is every other one I've done... not sure what happened on this one though.
most every axle I have ever geared you have to (press) the outer on as well. what I do is put the pinion in the housing slide the new outer bearing in with crush sleave or shims if needed and have someone with a long 4x4 hold pressure on the pinion while you use the yoke and a brass hammer to press it on
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Old October 25th, 2013, 06:51 AM   #7
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Interesting, there's good .005" difference on mine between bearing ID and shaft OD... seems like a pretty stiff fit to me. Not sure but I'd think that would affect the bearing preload with the crush sleeve, seems like it wouldn't be correct. Like I said I've done a handful at work/ home and have never run into this, but as I know from working on cars/trucks for a living, I've learned that ANYTHING is possible and if it's possible it WILL happen lol. Gonna call up DTS this morning and get there opinion, thanks for your input. I'll let u know what I find out.
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Old October 25th, 2013, 06:53 AM   #8
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Just confused a bit because my old pinion is a slip fit, same bearings, new and old bearings slip on the old pinion the same. Possible that I need a different pinion bearing with a larger I'd? I know how "universal" some of the aftermarket stuff can get.
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Old October 25th, 2013, 09:06 AM   #9
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I can't speak to your issue but i will say i used usa standard stuff in my sterling and it all fit great and set up well and so far has performed great
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Old October 25th, 2013, 11:39 AM   #10
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ok got things workin.... wound up cleaning the pinion surface with fine emery cloth, and taking a fine hone to the ID of the bearing, I got a nice tight but slip fit. A little ingenuity goes a long ways sometime I guess, thanks everyone for the input. ill post on this again when I get the gears set up and note the installation, how easy they set up etc.
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Old October 31st, 2013, 08:28 PM   #11
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Got everything all set on my 10.25... the USA standard gears set up sweet. Supposedly these are yukons that didn't meet yukons specs for noise, fit, etc. Seem like they're a legit gear tho, got a good pattern first try then fine tuned the shims a touch. Topped off my new bearing kit, track lock and gears with a fresh coat of gloss black on the housing and a solid axle Ind. Iron diff cover... excited to start wasting money on my "ultimate Dana 44" project now lol
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