Transmissions and Drivetrain Need help with your trans? Problems with your axle?

What causes DIFF fluid to leak out the axels?

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Old Jan 4, 2010 | 02:56 PM
  #1  
89pontiac400's Avatar
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From: Phoenix
Car: 1989 Pontiac trans-am
Engine: building a 400
Transmission: 700r4
What causes DIFF fluid to leak out the axels?

I've got a Dana 60 from strange and it leaks fluid out the axels. I was out test driving it the other day and tried to see how fast it could turn the last corner to my house and the outside wheel is full of fluid from the differential. I'm wondering if its too full ,or am I missing a seal?
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Old Jan 4, 2010 | 03:10 PM
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: What causes DIFF fluid to leak out the axels?

Bad or missing axle seals.
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Old Jan 4, 2010 | 05:29 PM
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big gear head's Avatar
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Re: What causes DIFF fluid to leak out the axels?

It probably has the o rings on the axle bearings. These sometimes cause problems. If the housing ends are made for the stick axle seals then install a set and it should be fine. If they are not made for the axle seals then you can remove thee axles, clean out the housing ends and the outside of the bearings and smear some RTV sealant around the inside of the housing ends. Then push the axles back in and it should seal them.
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Old Jan 5, 2010 | 02:04 AM
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89pontiac400's Avatar
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From: Phoenix
Car: 1989 Pontiac trans-am
Engine: building a 400
Transmission: 700r4
Re: What causes DIFF fluid to leak out the axels?

Thanks for the advice guys, I'll check the seals.
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Old Jan 5, 2010 | 03:59 AM
  #5  
RPOL98's Avatar
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From: USA
Car: 90 IROC
Engine: 5.7L TPI
Transmission: 700R4
Axle/Gears: 9-bolt BW
Re: What causes DIFF fluid to leak out the axels?

wow, that would suck. gear lube has that particular odor that lingers for a loooong time.
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Old Jan 7, 2010 | 10:00 PM
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From: Camdenton, Mo/ St. Joseph, Mo
Car: 97 Cummins 92 CamaroZ28, 94 GSXR750
Engine: Modded 5.9 , carbed sbc358, modded
Transmission: Nv4500, 700R4 (for now)
Axle/Gears: stock
Re: What causes DIFF fluid to leak out the axels?

I would personally jack the rearend up and pull on the tires out towards you to make sure they arent loose, im prtty sure i have a broken c clip in my rearend and its havin the same exact issues with leaking. I can still drive with mine but i can move my driver tire a bit.

Last edited by 92z28camarokid; Jan 7, 2010 at 10:06 PM.
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Old Jan 7, 2010 | 10:12 PM
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: What causes DIFF fluid to leak out the axels?

Originally Posted by 92z28camarokid
I would personally jack the rearend up and pull on the tires out towards you to make sure they arent loose, im prtty sure i have a broken c clip in my rearend and its havin the same exact issues with leaking. I can still drive with mine but i can move my driver tire a bit.
There is a very small clearance. If you had a broken c-clip, you'd be holding the whole axle right now.
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Old Jan 7, 2010 | 10:16 PM
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: What causes DIFF fluid to leak out the axels?

Get a C-clip Eliminator kit & be done with that problem.

http://www.summitracing.com/search/P...iminator-Kits/

Last edited by Stephen; Jan 7, 2010 at 10:35 PM.
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Old Jan 8, 2010 | 11:14 AM
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Re: What causes DIFF fluid to leak out the axels?

A c clip eliminator kit will actually cause that problem. There are very few c clip eliminator kits that won't leak oil when used on the street. Most of the time they leak more than any other type of axle retention. If you have c clip axles and you have a lot of axle end play then you probably have an Auburn differential that is worn out. As they wear they allow more end play in the axles. Replacing the differential will cure the axle end play problem. A broken c clip will not cause an axle seal leak unless the axle came out.
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Old Jan 8, 2010 | 11:50 AM
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: What causes DIFF fluid to leak out the axels?

No C clips in his Dana 60.
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Old Jan 8, 2010 | 12:51 PM
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Re: What causes DIFF fluid to leak out the axels?

If I am remembering the right DANA axle, the seals are located just outside the carrier bearings. If this is the case it's VERY easy to damage the seals on removal or installation of the axles with the splines. You wouldn't know until a situation like this came up.
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Old Jan 8, 2010 | 01:39 PM
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Re: What causes DIFF fluid to leak out the axels?

Strange uses their own houisng ends on their Dana 60. If they are the same as the older ends that I have seen then there is no room for a seal in them. They use the axle bearings with the o ring, which doesn't always work well for holding the oil in. Without knowing what type of sel is in this rear end it's going to be hard to figure out exactly what is wrong.
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