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Old 04-27-2013, 04:35 AM   #1
Cliff8928
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Default Pass side output shaft seal came out!

So I was installing my LG Big 3 exhaust last week and I noticed some leakage around the passenger side output shaft. Upon further inspection, i saw the seal was actually out of the side cover almost touching the CV Joint. I grabbed a screwdriver out of the tool box, seeing if it would go back in easily, and it did with no effort. It's not being held in what so ever.

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Has anyone ever had this happen before? Is there anything that could've caused this (clogged vent, etc...) I just repaired the other side per the TSB instructions last year.

I'm probably going to head to the dealer in the morning and pick up a new seal. I got some Loctite 680 from a friend that I will use to install it, incase the cover is worn from the seal spinning in the bore.

Man, I hate gear lube.
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Old 04-27-2013, 02:09 PM   #2
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Yes a clogged vent will push out the axle seal, now what your most likely going to need is a new cover for that side.
When the seal gets pushed out it will spin in the cover bore and it doesn't take long for the steel seal to wipe out the aluminum covers bore.
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Old 04-28-2013, 02:47 AM   #3
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I do remember checking that vent when I had the other side open last year... Oh well.

I picked up the new seal from the local dealer (in stock!), and installed it tonight. It didn't fit much tighter than the one that came out. The only difference is that I did use the Loctite 680 Retaining Compound when installing it. I figured I didn't have anything to lose if I'll have to replace the cover anyways. I'll just keep an eye on it when I drive it this week. (only 20 miles each way for work, minimal traffic)

On replacing the cover, is it that difficult? I was reading the service manual on it and it mentioned obtaining the correct shims for the bearing race for the carrier due to side cover bore differences.

Has anyone done this? I know my way with micrometers, calipers, etc. But does it require any specialized tools where this should be left to the pros?
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Old 04-28-2013, 10:27 AM   #4
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I blew up a rear end this very way. I pushed a seal, it spun in the bore, and enlarged the hole. I got a new side cover, transferred the shims from my old cover, and put the new one on and made sure to torque it properly. Worked great for a day or two, but the first time I got on it... BOOM!

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Old 04-28-2013, 12:27 PM   #5
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Yes you will need the measure the new cover vs the old one the insure to maintain the same preload on the diff side bearings.
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Old 04-28-2013, 01:50 PM   #6
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Well, here's to hoping that Loctite works wonders, the maintenance guy at my work (former C5 owner) says it does!

If not, it may go into the shop for this one. I'll do almost anything myself, but I'm just not sure on this one. It could also be a good opportunity to have a Quaife installed.
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Old 04-28-2013, 08:00 PM   #7
Bill Curlee
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If it were me and I had a loose seal,,,, I would JB Weld it in place. It will NOT come out once thats done!

That way you are not changing any rear end specs.

Even though you epoxy it in,, you can still get the seal out later on if necessary. It will just require a little more work.

Bill
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Old 04-28-2013, 11:13 PM   #8
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Quote:
Originally Posted by Bill Curlee View Post
If it were me and I had a loose seal,,,, I would JB Weld it in place. It will NOT come out once thats done!

That way you are not changing any rear end specs.

Even though you epoxy it in,, you can still get the seal out later on if necessary. It will just require a little more work.

Bill
I really really really really really REALLY wish I had done this. That stupid seal cost me a new rear end and a transmission rebuilt, when it broke it tweaked my output shaft, AND bent my DTE brace! That was a built 3.90 3 rib rear with the 300M axle shafts. Anyways, clean it really well and put a new seal in there, and JB weld the snot out of it. Let it dry for a day or two and forget about it. Clean the vent on the top though!
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Old 04-28-2013, 11:19 PM   #9
Bill Curlee
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If you wind up epoxying it,, make sure that you get the seal metal outside clean and coating free and same for the diff housing to make sure that the epoxy adhears to the seal and the housing.

Thanks Mike.

Bill
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Old 04-28-2013, 11:57 PM   #10
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I bet the loctite will work very well, as long as you got the seal bore totally oil free and dry.

Ron
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Old 04-29-2013, 12:15 AM   #11
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I cleaned it out with some Xylene and let it dry for a bit, same with the new seal. After sitting about 18 hours I tried to rotate the seal in the bore with a screwdriver in the notch and it wouldn't budge. Maybe I'll get lucky on this one. I've got some fresh Mobil1 gear oil to go in tomorrow and I'll be driving on Tuesday!

I appreciate everyone's assistance who chimed in on this!
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Old 04-29-2013, 12:15 AM
 
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