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Old 07-04-2006, 06:00 PM   #1
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Angry What the heck is this??

I changed the oil in the rear differential today, all went well, until I moved the drain tub. I notice a "blob" on top which I poked, it turned out to be a metal slug! I had been hearing a binding noise coming from the rear end and had replied to a post about a potential bent output shaft, but I think I found my problem.

This slug is a little larger and thicker than a nickel (would have fit through the filler hole) and was obviously causing the racket...I took the jeep for a ride and no more noise...It is not completely round, but is rounded on one end taper down to a somewhat square end. Somewhat hard to tell because its a little chewed up (sure that did the gears some good). Any ideas??

If I find where my wife hid the camera I'll post the picture...

Thanks!

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Old 07-04-2006, 06:29 PM   #2
coilovers are damn flexy
 
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Is this something that just developed? By that I mean did this noise just start, or has it always been there? I am trying to figure out if a piece sheared off of your spider gears, or if this piece of metal has always been in your diff. A picture would definately help resolve this question. You should investigate where this piece of metal came from, before you close up your diff. Hopefully you inspected the teeth on your gears to make sure they are in good shape. Also inspect the spider gears completely.

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Old 07-04-2006, 10:37 PM   #3
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Check to see if it is a magnet. Lots of diff. and tranny's have them to attraked small pieces of metal.
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Old 07-05-2006, 07:08 AM   #4
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sounds like a piece of spider gear to me but a pic will clear it up
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Old 07-06-2006, 06:28 AM   #5
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Quote:
Originally Posted by Keith
Check to see if it is a magnet. Lots of diff. and tranny's have them to attraked small pieces of metal.
This was my first guess as well.
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Old 07-06-2006, 07:56 PM   #6
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Okay, here are some pictures...sorry had to really zoom in to get these. Gears looked okay when I was in there...couldn't see where it came from. Jeep runs/rides fine...actually had it in the woods looking for our dog today, ran up a steep (60 degrees?) muddy incline fine (had to throw this in...first time getting to get muddy. Too bad had to lose a dog to try it)....

Any thoughts are welcome...
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Old 07-06-2006, 07:57 PM   #7
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Forgot...checked the magnet theory out (popular with guys at work too). Not so...or if it was its lost magnetism.

Thanks!
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Old 07-06-2006, 08:01 PM   #8
coilovers are damn flexy
 
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Too small for the magnet, please refer to my other statement, and comment on that.
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Old 07-06-2006, 08:32 PM   #9
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I've only had the Jeep three weeks and its done it since I got it. I noticed that if I took off slow, no grinding or binding noise. If I took off a little quicker, it would bind (makes since, as the slug would stay at the bottom of the diff, right?)...this is one of the main reasons I wanted to drain the differential. The Jeep has 55k on it and it appears the diff oil had been changed at least once (two RTV colors). I'm not noticing any type of driving issue at this point. Would/should I? I'm planning on taking the cover off again this weekend to get a better look, as I only gave the gears a cursory look when the cover was off. I didn't find the metal until I was putting everything away.
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Old 07-07-2006, 05:12 PM   #10
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Buddy of mine found an article/picture talking about the C-clip in the Dana rear end used to hold the axels in. Claimed that the "buttons" would some time breakoff...seems like that theory would fit this pretty well. Give the taper end (break from clip) and the round end (button).

Thoughts?
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Old 07-08-2006, 05:48 AM   #11
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Take a photography class!
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Old 07-09-2006, 02:08 PM   #12
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Thumbs up

Bad photography and all...confirmed that this is the button off the C-clip. Looks like it broke just behind the "button" so most of the "C" is still intact.

How hard is this to pull out and replace?
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Old 07-09-2006, 04:00 PM   #13
coilovers are damn flexy
 
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Glad you figured it out. I didn't think that a magnet could float around in a metal environment. I have never replaced an axle shaft, so I can't tell you how to do that. I am sure someone has on this forum, and if not, I would think that a local shop could advise you on it. If you are going to replace it, might as well go with the alloy upgrades. You could talk to Superior Axles, or someone like that. I know that Quadratec sells the kits, and will talk to you on the phone during regular business hours. Good luck, and let us know how it turns out.

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