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Unread 05-08-2013, 03:55 PM   #1
ad-man
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Bearing in rear end gone

Ok here we go. Today my rear end started grinding as I was getting close to work. When I got to a parking lot to park it. I see that the rear pumpkin is leaking and smoking. I had been doing 75 most of the way. Shhh. Dont tell 50. It has been "creaking" for a long time so I knew it would go sometime. I searched a bit here in my phone and find a lot off swap out treads. But thats not really what I want to do. It a stock 89 Cherokee with a 4.0 motor and auto transmission. I just want to replace the bearings and get it back on the road. I am assuming that it is just bearings from the way it sounds and what i have read here. I am looking for a write up with pictures to walk me through it. I am guessing there are 5 bearings total. I think I should replace them all while I have it apart.
Any thoughts.
Thanks

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Unread 05-08-2013, 06:38 PM   #2
CJ7-Tim
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Replacing all the bearings is not plug and play, you need some technical skills, and special tools, to make sure all the tolerances are correct.

A cheaper fix is buy a good used axle with the correct gear ratio. Inspect inside the differential before you buy. An axle swap can be done in a few hours with simple hand tools.
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Unread 05-08-2013, 06:48 PM   #3
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I second that emotion.
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Unread 05-08-2013, 07:12 PM   #4
RockRodHooligan
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Quote:
Originally Posted by CJ7-Tim View Post
Replacing all the bearings is not plug and play, you need some technical skills, and special tools, to make sure all the tolerances are correct.

A cheaper fix is buy a good used axle with the correct gear ratio. Inspect inside the differential before you buy. An axle swap can be done in a few hours with simple hand tools.
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Penis inches...
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Unread 05-08-2013, 09:36 PM   #5
ad-man
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Really
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Unread 05-08-2013, 09:38 PM   #6
ad-man
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Come on guys. Its a jeep, we're Americans. I can rebuild a engine in my garage but I can't replace a few bearings?? Hmm
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Unread 05-08-2013, 09:44 PM   #7
clgielin
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There are 4 bearings in your rear differential. Search Pirate, there are a few write-ups there. If you have a D35, Spicer has a free manual you can download. Good luck.
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Unread 05-09-2013, 05:59 AM   #8
CJ7-Tim
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The question is can you ? The Factory Service Manual has complete instructions, and you can find instructions on the InterWebz, if you search. When someone asks how to perform a moderately difficult to difficult service procedure, they usually do not have the tools and skills needed for the task.

YMMV.
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Unread 05-09-2013, 08:50 AM   #9
RockRodHooligan
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Chances are that you have a Dana 35.... Which is a crap axle. You can get a differential bearing/seal kit for $120 to try and rebuild an axle that "started grinding" and "leaking and smoking" and hope that all it needs is new bearings...... Or I can go to the local Pull a Part and get a 29 spline 8.25 for $110 and be done with it.
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Unread 05-09-2013, 10:27 AM   #10
ad-man
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I pulled the cover and it s 44. Driveline shop wants 900 for a complete rebuild and 600 for bearings only. Plus its 2 weeks out before they can get to it. Not sure if I want to chance a junkyard axle. Would hate to have this problem again in 6 months. The only part that worries me is the pinion gear. I pulled the front axle apart a few months ago for seals. That wasn't to bad. Found a real good write up on that one. Guess I will keep looking around
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Unread 05-09-2013, 10:32 AM   #11
Pats94
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Come on guys. Its a jeep, we're Americans. I can rebuild a engine in my garage but I can't replace a few bearings?? Hmm
New bearings will change the contact patch on the gear set. You don't just slap some bearings in. They need to be pretty exact. I could swap in an axle quicker than someone trying to figure out the settings and have done it cheaper.
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Unread 05-10-2013, 08:11 PM   #12
ad-man
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Well I stopped at the JY today to see what they had and how much it costs. $190 for the whole thing, side to side. Then I stopped at the driveline shop and begged them to get me in sooner than 2 weeks. So it goes in Tuesday for the rebuild. I told them to just to all the bearings and seals. I didn't see anything on the gears that would make me think they are shot. Its not like this has been worked hard (off road). But I am sure they will tell me if there is any chance that they need to be replaced. So I put it back together and got it out of the driveway so I can mess with the wrangler this weekend instead.
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Unread 05-17-2013, 11:08 AM   #13
ad-man
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So the driveline shop told me the carrier bearing spun in the housing. So its shot. They say they found a "donor" housing/rearend for $650 Said that they would put it on then check it out, fill it with oil and charge me $1050 for that.
So now I told them to bolt it back up, I owe them $80 for the diagnoses. Now I guess i am back to the junkyard swap out.
I marked the tire and drive shaft and think I have a 3.55 dana 44. So all I need to do is find that ratio at the junkyard. Put my stethoscope on it to hear if it grinds??? Checked the dana site a few days ago and is I remember right they only had 3.05 , 3.55, 4.10 rearend ratios that year. Do you all think that by spinning the drive shaft and think counting the revolution I will be correct at the yard to safely pull the proper one?
Also, does anyone have a swapout thread they would recommend for this . Searching for "rearend axle swap" gives me a lot of stuff to search through.
Thanks
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Unread 05-17-2013, 12:10 PM   #14
CJ7-Tim
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Any 4.0 L Cherokee with an automatic will be 3.55 gears. I suggest you look for 1997-01 29 spline Chry 8.25. Pull the cover to inspect the condition, count the ring teeth and pinion teeth, and then do the math.

Unbolt the old axle and bolt on the new one.
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Between 2009 when Obama took office, and 2013, median annual household incomes have fallen by more than $2,100.

Progressive Liberalism: Bringing you new Healthcare ideas so wonderful, they have to include mandatory participation ......

Originally Posted by Ronald W. Reagan: Government is not the solution to our problems; Government is the problem.
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Unread 05-17-2013, 12:37 PM   #15
Diamond-x
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You may be able to sell the 'rebuildable' D44 to reclaim some of your suffering.
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