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Dana 30 pinion help

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Old 12-28-2014, 12:44 PM
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Default Dana 30 pinion help

Working on going to 456 on the front hp dana30. Not sure from the markings on factory pinion and Yukon pinion as to how much to add or subtract on pinion shims. Any help is appreciated. I have done several gear installs but never a dana30.

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Old 12-28-2014, 04:36 PM
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Can't you just put that special marking stuff on the teeth and rotate it and adjust accordingly based on where they make contact?
Old 12-28-2014, 05:17 PM
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that's usually how you do it. test and test again with the marking paint till you get the right contact patch.
Old 12-28-2014, 05:27 PM
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It doesn't look to me like either need to have the shims adjusted. I think the numbers are for something else.
Old 12-28-2014, 05:32 PM
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The ID number on the pinion will also appear on the ring gear to prevent mismatch. The ID number has nothing to do with establishing a base reference.
Old 12-28-2014, 08:35 PM
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I ran into the same problem when I did mine last month but luckily I had barrowed a buddies pinion depth gauge setup so both frt & rear pinion depths didn't need any adjustment from where I set them up at the first try. See if you can find someone with one of those gauge sets.
Old 12-29-2014, 07:01 AM
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I know very little about all of this, the paint was just a method I've heard of
Old 12-29-2014, 07:23 AM
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You still have to use marking compound to check for final set up but if you have the pinion tool you get there quicker. Btw it is just for setting pinion depth.
Old 12-29-2014, 08:53 AM
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I know you always check with gear marking compound but read step 7 of this article. I have read several articles where pinion depth could be determined the first time and then it's just a matter of getting carrier shims adjusted for backlash.
http://m.4wdmechanix.com/?url=http%3A%2F%2Fwww.4wdmechanix.com%2FHow-to-Jeep-Cherokee-Dana-30-Axle-Rebuild.html#2593
Old 12-29-2014, 02:13 PM
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You did install a new center carrier didn't you if it had stock gears like 3.55's.
Old 12-29-2014, 02:56 PM
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Yes, I put a 373 and up carrier
Old 12-30-2014, 12:32 PM
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I always put the stock shims on(from original ring and pinion) and run a pattern. Then go from there. A press and bearing splitter will be needed to pull the pinion bearing to change shims, a little trick though is to home out the old pinion bearing so it slides on and off the pinion for ease of changing shims. Good luck
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