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Old 07-05-2011, 10:47 PM
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OldSalt65's Avatar
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Would you drive with this problem?

My spider gear blew out and now I have the damage as seen in the pictures. Just curious if I should change out the differential case. I am doing all the work myself and I am basically a backyard mechanic. The component doesn't seem to be warped, I have rotated it and watched it carefully with a reference line to ensure it wasn't. I didn't drive it long or hard once I heard the grinding noise. I am more concerned with the process of aligning the differential when if I install a new one. I don't go off-road anymore unless I run off the road. Trying to get my toy back online before the New England winter kicks in. Pls provide some feedback.

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Old 07-05-2011, 10:58 PM   #2
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Location: Stockton, CA
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Duct tape any1?

ITs a JEEP thang !!!
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Old 07-06-2011, 12:09 AM   #3
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Location: south east texas
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K 1 from the research i did dana 35 spider gears suck so when mine blew up i traded for the detroit true track i love it and no more worries but donno if you have done rearends before there's a lot to it bearing preload should be at 20fpsi and backlash at .006-.009 of of slack its a lot of playing with it plus how much gear your riding on so if you have any questions pm me and i will help as much as possible
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Old 07-06-2011, 12:21 AM   #4
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Good luck. I'm pretty confident when it comes most stuff on the jeep. Differentials...not so much. When I ruined my ring and pinion I took it to Midas and got it all replaced for $100. But had to rip the axle myself.
1990 Jeep Wrangler YJ. 2.5L. Bone Stock, mostly.

"I'd have more money for upgrades if it didn't break every week."
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Old 07-06-2011, 12:25 AM   #5

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You should have used a dial indicator to check the run out on the carrier before you took it apart to see how true it is.Doesn't matter now with that chunk missing i'd junk it.If you've never set a gear set up before i be visiting the bone yard for a used rear.You need a press and the right tool to remove your pinion bearing without damaging it.You'll be pressing on and off till you get your lash right.Job is not for backyard mechanics.Or price it out with a ace mechanic.Probably going to need axle bearing to with metal floating around the carrier.
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Old 07-08-2011, 10:07 AM
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Thanks for the information. Don't have dial indicator, but you are right about it being useful. I am not messing with the pinion for the drive shaft, it seems okay. I was mainly concerned with having to shim the differential case once I get the new one. I will have to pay close attention to the gear and pinion mating once back together. Any advise on a good bluing compound to use?

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