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Old 09-19-2011, 09:35 PM   #1
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What do I do?

I believe these are called spider gears. The one has some pitting on the one side of it like it shows. This is inside the ARB locker in the rear end of my Dana 35. None of the other gears inside show any pits or chips or anything of the sort. Is this not really that much of a concern or is it a huge concern? What are my options? Can I just replace the one gear or is it like a ring & pinion that must be replaced in sets? I am new to the gear world so please be patient.
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Old 09-19-2011, 09:40 PM   #2
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ur D35 is locked? i would leave it as it is because i wouldnt think the D35 woul last to long being locked anyways. idk what size of tires u run or shafts tho. just my .02 what size tires u running?

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Old 09-19-2011, 09:46 PM   #3
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Running 31s right now and I am debating between Superior shafts and Alloy USA. The axle is not in the Jeep right now, but will be in a week or two.
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Old 09-19-2011, 10:16 PM   #4
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idk, i would think that little bit would be ok atleast for a little while.
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Old 09-19-2011, 10:32 PM   #5
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What are my options?
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Old 09-19-2011, 10:42 PM   #6
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new gear set or just let it be im guessing. i dont know how much money your wanting to dump on ur axle. i would check everything n make sure there is no more anywhere else
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Old 09-19-2011, 10:48 PM   #7
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I have inspected all the gears and this gear is the only one that shows any sign of wear. Do I need to replace the set of gears or can I just replace the one gear?
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Old 09-19-2011, 10:50 PM   #8
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that im not to sure of, i would think you would have to replace both of them. might as well while you are in there uk
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Old 09-20-2011, 09:18 AM   #9
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Those four gears inside your axle are called the spider gears (technically two are spider gears and two are side gears) and the one I see looks alright to me. They are cheap and easy to replace, if they ever need to be replaced, and don't need to be set up. They can also be replaced individually. Most 4x4 shops have a couple sets of them in their junk boxes they will give you for free or cheap if you ever need a new set of them.
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Old 09-20-2011, 09:41 AM   #10
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So the pitting is okay. Thanks Jerry. I am trying to get ready for Moab and I only have a month left to get ready.
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Old 09-20-2011, 09:49 AM   #11
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That's not enough pitting to worry me.
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Old 09-20-2011, 09:54 AM   #12
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Thanks Jerry.
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Old 09-20-2011, 08:51 PM   #13
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So I contacted ARBs service department about this and this is what they said about this type of wear:

Gear wear on one side like this is the result of the axle shaft not entering the differential center accurately. It's a common problem on Dana 35 axles as the tubes bend very easily. The result is accelerated wear on the side gear teeth eventually leading to severe pitting and failure. Basically, when the housing gets bent the misalignment of the shafts creates severe pressure as the gears run over each other.

I may do a post just with the information and the picture for search references for others who have this problem.
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Old 09-20-2011, 11:38 PM   #14
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It doesn't appear that the ARB guy knows the TJ's Dana 35c axle tube is the same axle tube as is used for the TJ's Dana 44. Cut from the very same stock.
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Old 09-21-2011, 12:34 AM   #15
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I have a good axle that I could pull the locker out of the bent one and placed in the one I know is good. I think it would take another gear set up though. Is that true? Or would I be able to keep the same shims and just drop the ARB into the good axle?
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Old 09-21-2011, 12:40 AM   #16
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Removing and reinstalling a full-case locker like an ARB or Detroit Locker doesn't require a complete gear setup, but it does require that the locker be shimmed left or right until the required backlash (slop) between the ring & pinion gears is correct.

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