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Old 08-10-2010, 03:27 PM   #1
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Rear Diff Cover & Warranty

Hey guys,

Got a little issue on the 2010 rubi. I have had it for a month. I did not check the undercarriage when I left the lot but I did after the first trip and I had a small leak on the rear axle but I could not tell where it was coming from. Well it has grown and I can now tell that it is coming from the diff cover.

Looking under the rig you can tell that I have used the jeep. It does not look like hell but the usual low hanging suspects have scrapes from rocks but nothing major. The leak is in the middle of the passenger side vertical surface anyhow so there is no way a rock caused it. There is all kinds of silicone oozed out all around the cover. Not a very clean install if you ask me.

My first question is do you think the dealer is going to hand me the bill or do I have a chance at warranty coverage? I know that is hit or miss and up to the tech doing the job in most instances. Just wondering if you all have any experience in the matter. I would do it myself if they were going to charge me but that opens up another can of worms as far as rear axle warranty goes if they can say I worked on it.

That brings me to my next question. Since the cover has to come off anyhow I am wanting to go ahead and put a better cover on and a better seal like a lubelocker. I have it down to the teraflex d44 cover or the riddler d44 cover. Any suggestions on which to go with? I also have an AEV diff slider going on and I need to make sure that it will work with an aftermarket cover.

Any input on a good fluid to run would be greatly appreciated. Thanks for any advice you guys can give.

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Old 08-10-2010, 03:47 PM   #2
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Have ya checked the bolts to see if they are loose? Might be a simple fix.

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Old 08-10-2010, 03:59 PM   #3
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I don't know if the dealership would cry about you changing fluid yourself or not. I guess it would be ok if you had receipts from the lube lock and fluid. something as evidence that it was indeed done if an issue were to occur.

check the bolts like 4jeepin mentioned. I've banged my rear diff cover being an idiot driving and knocked a chunk of rust off it managed to disrupt the gasket seal and it leaks. as long as you aren't seeing drips or a puddle on your driveway from it, other than tightening the bolts, I wouldn't pay it no mind. they need done every other oil change anyway, so no sense in dumping expensive gear oil out the window just to reseal a gasket.
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Old 08-10-2010, 04:09 PM   #4
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I checked the torque on all bolts and they were all within spec.

I am going to go with an aftermarket cover for the added protection.

What is this about changing out fluid every other oil change? I surely don't plan on doing that every 6000.
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Old 08-10-2010, 04:34 PM   #5
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Quote:
Originally Posted by ColdSRT View Post
I checked the torque on all bolts and they were all within spec.

I am going to go with an aftermarket cover for the added protection.

What is this about changing out fluid every other oil change? I surely don't plan on doing that every 6000.
Totally unnecesary. Check your owners manual for suggested maintenance intervals.
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Old 08-10-2010, 04:54 PM   #6
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oops my bad. I was going by my schedule. I forgot most folks change oil more than myself. I'm on 8-9,000 miles between changes. I go every other unless I find water or dirt in the oil. so I change gear oil approx every 15,000 or so. my apologies.

still though. I wouldn't be too worried about a little oozing. I'd fix it next time you do the axles or get your covers. I've got like 10,000 miles before I plan on mine being fixed. no rush. that gear oil is too expensive to be dumping out just for the sake of replacing a gasket.
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Old 08-10-2010, 06:06 PM   #7
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My JK is at nearly 25k and I jsut replaced the diff fluid yesterday. The front was somewhat dirty, but nothing major. The rear... black as black. I was told the diffs are suppose to be done around every 20k?
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Old 08-10-2010, 10:17 PM   #8
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Totally unnecesary. Check your owners manual for suggested maintenance intervals.
That is the thing though. I have not checked the maintenance book for the jeep yet but I do everything else I own at 3k for the oil and I generally go by the extreme use schedule in the books due to our environment and running conditions. Has not got me into trouble yet. However most of my experience is from high hp applications and not so much high stress off road. I like to play in the water a lot and have heard you should drain your fluids more often when doing that. That is why I questioned the interval quoted. 15k sounds like a good plan. I'm gonna dump at least the rear soon when I put the cover on. I will check the fluid then and see if there are any issues. I don't expect any with the low miles on the jeep. It is leaking but it is more of a seeping. There are no drops of fluid hanging and it is not marking it's spot yet. The only troubling thing is that it has grown in a weeks time. Kind of glad I have a cover on the way to be honest.

I went with the riddler. Looks like a sweet cover. With that and the slider that rear dana should be well covered.
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Old 08-11-2010, 09:12 AM   #9
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Have the dealer check it out

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