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Old 12-31-2010, 04:19 PM   #1
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Front End Leaking

My pinion seal was leaking and while I was home for Christmas I paid local shop to fix it on my Rubicon for 75. I gave them everything and they also replaced the differential seal for me. So today I went to Walmart to get the lifetime rotate and balance for 30. When they were done the guy goes your front end is leaking. I said what?

So get this the new poinion seal is leaking and its coming out of some side seal for the axle shafts. Talking about being mad, Dang. How hard is that seal by the knuckles to replace. Got a pic of it puddle.

Makes me wonder what they did. I only gave them 2 qts to use so now I really have a problem.


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Old 12-31-2010, 04:34 PM   #2
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Here is a write up for the oil seal replacement...it's for a D30 front but...*cough* same as a factory front D44

http://www.stu-offroad.com/axle/d30seals/seal-1.htm

First Pull the fill plug and see if they put way to much in there.

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Old 12-31-2010, 04:41 PM   #3
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That isn't really a seal. Its just a cover to keep the bigger chunks of dirt out. Some people upgrade them to keep out water and mud better. You might have to change your oil seal...
D-30 Axle Shaft Seal Replacement - 1

Edit: I sat on the page too long before I posted...
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Old 12-31-2010, 04:52 PM   #4
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Quote:
Originally Posted by distortedtj View Post
Here is a write up for the oil seal replacement...it's for a D30 front but...*cough* same as a factory front D44

D-30 Axle Shaft Seal Replacement - 1

First Pull the fill plug and see if they put way to much in there.
Yeah its a D44 diff but outside of that's its not.

Thanks
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Old 12-31-2010, 05:27 PM   #5
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Differential seals are at the differential carrier bearings. I do not think that the shop would have pulled your diff apart and replaced those seals for $75. Go back to those guys and find out what they really did for your money.
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Old 12-31-2010, 07:44 PM   #6
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Quote:
Originally Posted by D51_06TJ View Post
Differential seals are at the differential carrier bearings. I do not think that the shop would have pulled your diff apart and replaced those seals for $75. Go back to those guys and find out what they really did for your money.
D51
They replaced the pinion seal. Now its leaking again along with the other problem.
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Old 12-31-2010, 09:20 PM   #7
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The picture you posted is of your axle seal. The pinion seal is located on the back of the differential.
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Old 12-31-2010, 09:44 PM   #8
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I'm sure that you have already checked but make sure that your differential fluid level isn't too high. The front axle uses a single seal and when flooded will leak by. Just something to check before spending money on repairs. When you pull the plug the level should be at the bottom of the fill hole.
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Old 01-01-2011, 09:54 AM   #9
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OK, we need to clear up some terminology.
Pinion seal - seals around the pinion shaft, just under the yoke where the front driveshaft connects to the differential housing
Diffrential seals - seal around the axle shafts where the come out of the differentials
Axel seals - located at the ends of axle tubes. On front axles they are keeping dirt and water out, and there should not be any diff fluid there at all.

Get your money back (and a new seal) and go somewhere else. Replacing a pinion seal is a pretty basic job and mechanic shoujld be able to handle with ease. I would not let them even attempt to replace your diff seals. The axle shafts need to come out, carrier needs to be removed and the carrier bearing caps and bearings need to be removed to replace the seals. If these guys can not do a pinion seal there is little chance they will successfully do diff seals.
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Old 01-01-2011, 10:36 AM   #10
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Quote:
Originally Posted by D51_06TJ View Post
OK, we need to clear up some terminology.
Pinion seal - seals around the pinion shaft, just under the yoke where the front driveshaft connects to the differential housing
Diffrential seals - seal around the axle shafts where the come out of the differentials
Axel seals - located at the ends of axle tubes. On front axles they are keeping dirt and water out, and there should not be any diff fluid there at all.D51
Unless the shop pulled his axles out to do the pinion seal, there is no way they damaged an axle seal. On the rear axle there are axle seals in the outer end of the tube. On the front the axle seals are in the inboard side of the tube. You have to remove the carrier to replace them. As far as over filling it, if you fill it till it gets to the bottom of the hole and keep filling it, won't it just come out of the hole before it can over fill? I guess if they jacked the front way up in the air they could get more in, though. Maybe it was leaking but the fluid was too low since the pinion seal was leaking to notice. Or maybe it got messed up from being too dry with the fluid all leaked out from the pinion seal. Just my .02.
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Old 01-01-2011, 01:29 PM   #11
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Quote:
Originally Posted by D51_06TJ View Post
OK, we need to clear up some terminology.
Pinion seal - seals around the pinion shaft, just under the yoke where the front driveshaft connects to the differential housing
Diffrential seals - seal around the axle shafts where the come out of the differentials
Axel seals - located at the ends of axle tubes. On front axles they are keeping dirt and water out, and there should not be any diff fluid there at all.

Get your money back (and a new seal) and go somewhere else. Replacing a pinion seal is a pretty basic job and mechanic shoujld be able to handle with ease. I would not let them even attempt to replace your diff seals. The axle shafts need to come out, carrier needs to be removed and the carrier bearing caps and bearings need to be removed to replace the seals. If these guys can not do a pinion seal there is little chance they will successfully do diff seals.
D51
Sorry for the confusion. I took a picture of the new problem to see where the leak might be coming from. I'm learning how to turn a wrench better and better but couldn't find any assistance from someone to help replace the pinion seal. I don't have air tools. I did put the lift on my jeep but that's achieved with common tools.

How difficult is the diff deals to replace and would you have a guess of what someone could charge?
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IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.
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Old 01-01-2011, 01:33 PM   #12
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Leakage from the axle tube is caused by a bad seal inside the pumpkin. The axle shafts and the differential inside the pumpkin are removed to get at that seal, one on each side.
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Old 01-01-2011, 02:12 PM   #13
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Go DAWGS!!

YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T MOVE AND SHOULD, USE THE WD-40. IF IT SHOULDN'T MOVE AND DOES, USE THE DUCT TAPE.

IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.
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Old 10-05-2011, 11:28 AM   #14
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I know this is an old thread, but does the TJ's front Dana 30 axle have an outer seal (wheel end of the axle)? I was told it does have both seals for each end of the axle shaft. True or false?
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Old 10-05-2011, 11:33 AM   #15
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The front axle does not have an outer axle tube seal, the inner seal inside the pumpkin is what keeps the gear lube inside. There is no gear lube allowed into the inside of the axle tube itself.

There is only a small outer axle tube barrier that some call a seal but it's only job is to keep debris out of the axle tube.

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