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Unread 01-17-2011, 11:13 AM   #1
Dragon158
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Unhappy Looking for some insight (Rear axle issue)

Ok, a few weeks ago I noticed my Dads drivers side axle seal was leaking. I called the dealer and ordered the new seals, a few days later I decided to tackle the job. I've never done a Jeep axle seal, I have done several GM seals recently and figured they would be the same. Obviously I was wrong. After I realized the bearing & collar were pressed onto the axle I already had everything pulled apart. So I called the dealer and ordered new bearings and retainers. I have access to Chryslers Dealer connect site and followed the procedure step by step. Up until the oil, unfortunatly I only had access to a synthtic blend 85 w 140 & the dealer called for 75 w 140 full synthetic. I figured it wouldn't hurt. So I get everything back together, replacing the pads & rotors & drove it home that night. On the 9 mile ride home I notice a noise, I stopped & looked but saw nothing. I applied the parking brake and the noise stopped, I assumed that the park brake shoes weren't seated or something.
I give the car back to my dad and tell him to listen for any noise, just in case. He doesn't drive much and ran a few errands with out an issue. I took the GC back to my shop to double check the oil level this past Friday, it was perfect, I drove his Jeep for 20 miles with out incident. Then I get a call Saturday afternoon, my Dad heard a grinding noise and felt the wheels starting to lock up. I pull it apart yesterday and the bearing on the drivers side is destroyed, totally gone. There is no oil at all on the bearings, zero oil in the axle tube.
So today I go to a friends shop and jump on there Mitchell on demand. And I read about a procedure to spread the oil around after servicing the rear. It says something about doing a series of figure 8's to ensure that the oil is distributed around the axle. I didn't do that, I only coated the bearing with some gear oil. The figure 8 thing isn't on Jeep service procedure. So my question is... has anyone run into anything like this? I've never heard of anything like that. After I was done the bearings I put a wheel up on a curb, to try to tilt the oil to each side of the axle, but it wasn't part of any procedure... I just did it trying to get the oil around...
Sorry this is soooo long, just trying to figure out what went wrong, or what I did wrong, because I'm baffled here.
Any insight will be greatly appreciated.
-Shawn


Last edited by Dragon158; 01-17-2011 at 02:07 PM.. Reason: Typo
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Unread 01-17-2011, 06:33 PM   #2
Dragon158
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Bump for the night shift, hoping someone can tell me what I did wrong.

-thanks Shawn
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Unread 01-17-2011, 08:31 PM   #3
williambmac
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I have never heard of or read that. I actually just checked on Alldata and they have nothing regarding this.
I have replaced quite a few of these bearings without a problem. I always use timken replacements. Sure you didn't damage the bearing when pressing it on?
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Unread 01-17-2011, 08:38 PM   #4
tsconver
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if the oil is added to the bottom of the fill hole on a level surface the oil is above the tubes and will flow into the tube and down to the bearing on its own.
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Unread 01-17-2011, 08:40 PM   #5
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Here you go......Found this when looking thru the diffenential service/rebuild procedure.
Trac-Lok differential equipped vehicles should be road tested by making 10 to 12 slow figure-eight turns. This maneuver will pump the lubricant through the clutch discs to eliminate a possible chatter noise complaint.

This is required when servicing/repairing the rear diff to pump the friction modifier thru the clutch discs. Has nothing to do with the axle brg.
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Unread 01-17-2011, 10:51 PM   #6
Dragon158
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Ok, so the figure 8 thing was for diagnosing a diff problem, then I have no clue what happened. I did everything by the book with the bearings... I even rechecked the oil level on Friday, the day before the grinding started.
I did damage the old bearings trying to remove them, so I replaced them and everything went smoothly. I really expected to see an issue with the park brake shoes when I pulled it apart Saturday afternoon, I've read the hardware can rust etc... I thought I may have knocked something loose...
I just don't get what happened, after I pressed the bearings on I felt them and there was no damage. I coated them lightly with gear oil and installed... the instructions say to grease them, but I've always coated them in oil. I must have done something wrong, but I'm at a loss as to what. I still have no idea what the passenger side looks like. I have to wait until Wednesday to get it towed to a shop and have them re do everything.
Thanks for the posts.
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Unread 01-17-2011, 11:51 PM   #7
TJSWJ
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Did you replace the spacers as well? Did you replace the bearing races in the axle?
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Unread 01-18-2011, 08:08 AM   #8
williambmac
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Quote:
Originally Posted by TJSWJ View Post
Did you replace the spacers as well? Did you replace the bearing races in the axle?
The brg comes as a complete assembly. brg,race and collar
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Unread 01-18-2011, 11:02 AM   #9
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Thats weird. I was a diff mechanic for a few years and have never seen that.
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Unread 01-18-2011, 12:16 PM   #10
TJSWJ
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hmm mine didnt come as an assembly. when i ordered the parts from the dealer i got the bearing and race, and the retainer ring seperate. I had to slide the new retaining plate over the axle, then the seal, then press the axle bearing on the axle, then press the retaining ring onto the axle. Finally install new bearing race in the diff then install axle assembly.
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Unread 01-18-2011, 03:14 PM   #11
MStaffin
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I need to do my axle seal on the right side.
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Unread 01-18-2011, 11:03 PM   #12
Dragon158
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Well it gets towed tomorrow and hopefully gets fully disassembled, then maybe I'll have an answer as to what happened. Just not knowing how I screwed it up is bugging the **** out of me.
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Unread 01-22-2011, 06:48 PM   #13
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Quote:
Originally Posted by Warlust View Post
Thats weird. I was a diff mechanic for a few years and have never seen that.
Since you were a diff mechanic, how often do the seals go bad on the dana35s on the WJs? I replaced the right rear one just over a year ago and had to do it again today. The left side one hasnt been touched and its not leaking. ANd Ive had the Jeep for 2 years
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