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Old 06-16-2011, 08:35 PM   #1
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Rear end, too worn?

Looking for a little advice...

I have acquired a D35 w/4.11 and plan to swap it for my 3.07 gear. One day I'll go heavy duty but for now this is what I have. The diff obviously has a good amount of miles on it (don't know how many but it's a 1990) and opening it up things look good but the pinion felt like it did not have enough preload. I measured the backlash at .009", pulled the carrier and measured not more than 4 in-lb preload (with the seal still installed). There is no measurable play either laterally or axially in the pinion.
Question, would it be OK to run it with this light preload? I am assuming that the light preload is a result of years of wear on the pinion bearings and seal.

Thanks
Dean

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Old 06-16-2011, 08:40 PM   #2
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I don't know much about the technical stuff but I will go ahead and assume you know that running 3.07 in the front and 4.10 in the rear is not gonna work out so well in 4wd.

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Old 06-16-2011, 08:47 PM   #3
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Quote:
Originally Posted by KBR97 View Post
I don't know much about the technical stuff but I will go ahead and assume you know that running 3.07 in the front and 4.10 in the rear is not gonna work out so well in 4wd.
Thanks for the warning but I have D30 4.10 for the front also as part of the swap. Just haven't had time to get into that one yet other than a quick look at the gears. It definitely needs a pinion seal. So I'll be in it soon!

D
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Old 06-16-2011, 08:49 PM   #4
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I figured you had something planned for the front. Just making sure it wasn't overlooked.
Good luck.
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