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Old 10-04-2013, 05:24 PM   #1
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Axle rebuild

Ive owned my CJ7 since new and and I'm embarrassed to say I have never even pulled the cover off of either one of my axles. Before you start calling me evil names ( which I like ), it has been in the garage for over ten years. I know, still no excuse.
I'm getting my 10 year itch to work on it and axle rebuild popped in my head. I want to upgrade to 4.56 gears and rebuild them. ( running 36x14.5x15 ) What do you think should be a definite must as far as a rebuild goes? Does anyone know of a complete rebuild kit available?
I'm trying to keep from spending a lot of cash on this because as we all know as Jeep owners they are money pits and I don't want to even go there. ( my wife hates it. ) I told her when I bite it to dig a big hole and put us both in it.
Dana 30 upfront
Model 20 rear.

When I get it back on the road its mainly going to be my weekend toy so I just wanted to make it durable. My putting a lot of miles on it are over and I just want to go over it. I have a 2012 Rubicon if I want to climb stuff.

Thanks in advance.

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Old 10-05-2013, 11:30 AM   #2
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No axle re build is cheep. And there is no cheep way of doing it eather. You would have to replace all the barings, seals, ring and pinion. Then labor because building a axle is not really anyone can do. You could swap bigger axles in for less then it would cost to rebuild them. That's what most people do. Take the diff covers off and see what they look like on the inside.

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Old 10-05-2013, 02:11 PM   #3
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Quote:
Originally Posted by cakes567 View Post
No axle re build is cheep. And there is no cheep way of doing it eather. You would have to replace all the barings, seals, ring and pinion. Then labor because building a axle is not really anyone can do. You could swap bigger axles in for less then it would cost to rebuild them. That's what most people do. Take the diff covers off and see what they look like on the inside.
Im going to pull the covers and see what lurks inside. I was hoping to do the rebuild myself but I have never done it so I don't want to have to tear it back apart if I don't do it right. Thanks for the input.
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Old 10-05-2013, 05:03 PM   #4
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Well for the 36 tires I would go with 4.88's. (depends on your trans) Also for 36's the stock axles are just not up to it.. and by the time your done rebuilding them... re gearing etc.. it would be far better to just slap some 1 tons in and call it done. Rear ford 10.25 about $300 in most yards front... chevy dana 60 would be nice but your looking around $1000 bucks for one that will need work.. HD dana 44 might work with upgraded shafts and save you some coin. OR a rear 9" and front 44 out of bronco(not sure on the front diff drop though) I would keep in spring under for ease of install and if its more a fun driver not a big deal vs the bit more complex SOA lift.

Now that being said.. if you want to keep your stock axles.. The model 20.. if not already done upgrade to 1pc alloy shafts.. dana 30, upgrade to alloy shafts.. and for gears with the 36x14's.. I would consider 4.88's. But that depends on your trans.
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Old 10-05-2013, 08:46 PM   #5
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You don't mention what motor or trans you have so 4.56s might not be enough gear for you.

As others have suggested, 1 piece shafts, 4.88s ( that's a lot of tire you have) an an LSD will net you a basically new rear end. Then just match the front.
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Old 10-07-2013, 08:19 AM   #6
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If you have the time and want to learn how to properly set up a differential it's not rocket science. If you're like me I would rather purchase tools then pay labor cost. You should have a press, an dial indicator, bearing puller, for the amc 20 you need an axle puller. a place to work where you can clean parts and keep them clean. That being said, if it's the only gears your ever going to do pay a good shop to do it. but it can be done at home if you want to.

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