Regearing a job1? watch out! rear axle trouble. - Ford Powerstroke Diesel Forum
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Old 06-03-2008, 08:20 PM
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Regearing a job1? watch out! rear axle trouble.

Long story short (ha!) decided to regear to 4.56 for the bigger tires. Thought, well thats straight forward. D60 front, 10.5 rear, 3.73 stock gears. Front will use a "thick gear" so no carrier change is needed. Then there's the rear..... let the fun begin.

WHAT THE F#CK did Ford do with the early job1 axles?? I stopped by my shop today (who are beyond-capable of doing gear installs) to check on the progress to find the rear diff has been apart all day and they're trying to figure out what the hell has been thrown together from the factory.

BESIDES the fact that the preload was off and things weren't that tight in there (from the factory, keep in mind), it turns out, there were some changes in the pinion bearings on the 08 axles. The install-kit and gears are for an 08 ford (duh). Well what came OUT of the truck was NOT what was "supposed" to be in there according to numerous sources like Randys Ring & Pinion, and FORD themselves. Not only that... half of the parts in there had NO part numbers on them. Just blank (parts that SHOULD have been marked)! Its all timken stuff, but nothing was marked as it should have been according to everyones manuals and specs, so it was next to impossible to figure out whats been thrown together in there.

I don't have much more in the way of info tonight, but should have pics and more info tomorrow. Just curious if anyone has heard of anything like this before. Right now, it appears that the axle is a hybrid of parts that don't match 07-down or 08-up entirely, and has a big white "70" (Dana-70??) upside down in something resembling chalk (but doesn't wipe off), on the rear of the drivers side axle tube.

Truck has a build date of 4/1/07, SRW, F350 diesel, cc/sb.


Last edited by ZeroOne; 06-03-2008 at 08:24 PM.
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Old 06-03-2008, 08:37 PM
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Regeared my Job 1 F250 about 20k miles ago and the shop finished it in about 4 hours. They said it was just like all the other Ford's they do. Did they actually get it put back together and working for you?
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Old 06-03-2008, 08:47 PM
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Not yet... they have parts on the way overnight and are trying a few different things tomorrow. It has to do with the inner pinion bearing being different (the one right behind the pinion teeth, i think). Its in the shop and all apart. They've done numerous axles before with no issue. This one is just odd.

When they put the parts in, just like they were supposed to go, as with any other truck... the flat face of the pinion was hitting the carrier and the contact pattern was way off, towards the inside of the ring. It all revolves around that inner bearing and some non-standard thick shims that were used from the factory, I think. Working on limited info at the moment though, until I talk to them again tomorrow.
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Old 02-01-2009, 09:02 PM
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When getting the true trac i found out mine is actually a visteon or some crap not a dana or ford
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Old 02-01-2009, 11:34 PM
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Quote:
Originally Posted by Benwood View Post
When getting the true trac i found out mine is actually a visteon or some crap not a dana or ford
your rear is a Sterling/Visteon... same rear end ford has been using since about 1992... the front is a dana.
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Old 02-02-2009, 07:25 AM
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Started this thread when I had the truck regeared.... since then, the setup loosened with the "correct" kit which has since been updated for 08's after months after my installation. A fix was attempted, and now it's in the shop for a 3rd time with a blown ring gear. We're finally getting the correct kit and a new ring and pinion. This time, it should set up properly since the manufacturers seem to have the correct info on the new 08-up axles. Read more here:
Cyclic noise coming from drivetrain...

and here:
10.5 & 10.5 gears interchangeable... bearings too?
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