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Unread 08-21-2010, 08:01 PM   #16
tcoche
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well I take that back I'm not finished for the evening. I got excited about these other wire brushes I got and I wanted to try em out. Low and behold they work fantastic!! This is probably 5 minutes of work. I might finish the diff tonight...if I can see! Its dark outside and I don't have a garage so I'm working on my patio...




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Unread 08-21-2010, 08:05 PM   #17
tcoche
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Originally Posted by BriansCJ View Post
Thats some nasty looking diff fluid.

Congrats on the 44
Yeah it didnt smell the greatest either! At that point though I had sprayed a full can of brake cleaner that is mixed in their as well. I kept spraying and letting in fill up then dump it. I still have more to do. I just got tired of doing it cuz it seemed that it would never stop. Oh well...back to more wire brushin!
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Unread 08-21-2010, 08:12 PM   #18
BriansCJ
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Originally Posted by tcoche View Post
Yeah it didnt smell the greatest either! At that point though I had sprayed a full can of brake cleaner that is mixed in their as well. I kept spraying and letting in fill up then dump it. I still have more to do. I just got tired of doing it cuz it seemed that it would never stop. Oh well...back to more wire brushin!
All diff fluid smells horrible. Its just worst when its mixed with mud(looks like yours was), and burnt, which I guess yours was too.

And instead of filling up the diff with brake cleaner, let it sit like it would in the Jeep and start at the top and work your way down.
I would also check the axle shaft seals.
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Unread 08-21-2010, 10:13 PM   #19
PistolPete99
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baby poop brown ..looks like some water was mix in there congrats on the find

ph
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Unread 08-21-2010, 10:30 PM   #20
tcoche
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Originally Posted by PistolPete99 View Post
baby poop brown ..looks like some water was mix in there congrats on the find

ph
Thanks! I bet the water got in from the bad pinion seal. Not looking forward to changing that. I read a few links and threads on changing the pinion seal. Doesn't sound fun at all. I just may drive the axle to a shop and pay em to do that.
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Unread 08-21-2010, 10:50 PM   #21
PistolPete99
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its really not that bad changing out the pinion seal, just making sure you tighten the pinion nut enough is the worry i always have but over all not bad

but i understand the piece of mind of having a shop doing it so then you dont have to worry about it


ph
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Unread 08-22-2010, 02:21 AM   #22
chaddb9
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nasty looking fluid, great find though!
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Unread 08-22-2010, 02:51 PM   #23
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update: I worked on the diff cover some more. I'm probably done with it. These little dirty spots you can see are imbedded into divots in the metal. I just don't have the time to waist on it anymore. Time to move onto the axle.





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Unread 08-22-2010, 03:37 PM   #24
freeskier93
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update: I worked on the diff cover some more. I'm probably done with it. These little dirty spots you can see are imbedded into divots in the metal. I just don't have the time to waist on it anymore. Time to move onto the axle.
Looks good, I would hit the cover with some rust neutralizer, like Ospho, before you paint.
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Unread 08-22-2010, 09:16 PM   #25
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worked on her for about 35 minutes this evening. I have a feeling this is gonna be a long process. I have a baby daughter so it makes it a little harder.

How is everyone else wire brushing? Are you using those little wheels for the drill or is there some magical brush that makes this ***** go quicker?? Can you please recommend a certain product, method or something!

Here is the little bit I got done tonight. I cleaned the diff cover where the sealant goes with the wire brush. I also cleaned the same area on the diff housing area. Come out beautiful! I also started wire brushin down the axle tube....(the yellow that is reflecting on the newly exposed metal is from the cardboard i'm sitting on)





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Unread 08-23-2010, 01:34 AM   #26
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i use a angle grinder with a wire wheel attatchment works like butter
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Unread 08-23-2010, 07:34 AM   #27
tcoche
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i use a angle grinder with a wire wheel attatchment works like butter
no solvent or anything? Just an angle grinder and a wire brush attachment? I'm also going to take "Freeskier93" advice and find some OSPHO. Does anyone know where I can find it? off the top of your head.
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Unread 08-23-2010, 08:48 AM   #28
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Originally Posted by tcoche View Post
my right rear axle identification tag reads this:

80W90
60 0Z+FM4 OZ

It sort of looks like there is another number or alpha numeric after the 60 and before the "0Z". I cant tell.

Does this mean my axle diff takes 80W90 diff fluid?? Does that mean I have to add that extra stuff to the fluid since I have a limited slip??

thanks
I'm thinking 60 oz of 80w90 and 4 oz of friction modifier?

Since it been in the water. I would first dump some fluid in and drive it for a short time then change the fluid again and add the fricition modifier.
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Unread 08-23-2010, 08:50 AM   #29
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nah i just used the wire wheel and and angle gringer, then a rust converter a a heavy brush on primer and a rattle can for paint ..im under my jeep at least two or three times a year grinding and painting sucks living in the rust belt

ph
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Unread 08-23-2010, 08:58 AM   #30
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I always thought that a limited slip diff had clutch plates in it, the picture looks like a regular open carrier to me ?
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