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post #1 of (permalink) Old 10-12-2002, 09:58 AM
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Rear Differential yoke seal.

Any experienced seal replacers out there. Whats the magic trick to replacing a leaky yoke seal on Dana 44 rear? Yes I'm a bit new but excited about digging in.
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post #2 of (permalink) Old 10-12-2002, 01:09 PM
 
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Re: Rear Differential yoke seal.

Nothing really. Remove the nut and yoke, pry out the old seal, carefully tap the new one in, put yoke back on, retorque pinion nut.

The only trick I know of is to use an impact gun to remove the nut. If you're careful, you can use it to reinstall the nut. To be safe, it's recommended that you use a new nut, but I've never lost an old one after reinstalling.
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post #3 of (permalink) Old 10-12-2002, 03:54 PM
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Re: Rear Differential yoke seal.

Removing that seal can be a pain, I would recommend a seal puller from Sears. It looks like a handle with a downward pointing hook on each end for prying, they cost @ $10.
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post #4 of (permalink) Old 10-12-2002, 05:47 PM
 
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Re: Rear Differential yoke seal.

That nut can be a pain to get undone so an impact really helps. using a couple small screw drivers can really help get the seal out.

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post #5 of (permalink) Old 10-18-2002, 06:17 PM
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Re: Rear Differential yoke seal.

Using a seal puller like the one from Sears means you will have to disassemble the rear axle to remove the pinion.

You can use a drill and make a few holes, then grab the holes with a pick or insert some screws, then pull on them to get the old one off. It'll get demolished, but it'll do that anyway. Tap the new one in place very easily so as not to damage it. Also, don't drill too far into the seal or you could hit the large washer that resides behind it. If you ro drill, use some grease on the end of the tip so any shavings will get caught in it and not go into the axle.

When in doubt, disassemble the axle though, that way you know it'll be done right.
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post #6 of (permalink) Old 10-18-2002, 08:46 PM
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Re: Rear Differential yoke seal.

In my experience/observations I've found that a leaking pinion seal usually meant that there were pinion "issues" ..hence the seal getting torn up.

If it fails again in a relatively few months/miles plan on a little more work.
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post #7 of (permalink) Old 10-19-2002, 09:07 AM
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Re: Rear Differential yoke seal.

It's possible there could be pinion issues, but then again, it could be dry from sitting and when put into service starts leaking. They're cheap and easy to put on, if the new one leaks I'd look into it further.
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post #8 of (permalink) Old 10-19-2002, 11:39 PM
 
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Re: Rear Differential yoke seal.

One thing I learned about pinion seals (most seals) is most Aftermarket Autoparts places sell you a cheapy single lip seal but if you go to the dealer you get a much better double lip seal that last alot longer. Sometimes its worth getting small stuff like seals from the dealer or atleast make sure you get a double lip seal from the Autoparts store
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post #9 of (permalink) Old 10-20-2002, 07:47 PM
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Re: Rear Differential yoke seal.

Use a punch to mark the nut, yoke and pinion so that the marks can be aligned when you put it back together. Count the number of turns it takes to get the nut off. If you use a new yoke or nut, this won't work obviously.
I clamped a bar to the outside of the yoke with two C clamps to keep the yoke from turning while I took off the nut.
Pound a sharp drywall screw into the metal ring of the seal, once it pierces the metal, screw it in some, grasp it with pliers and pry out the seal.
Use loctite on the nut when you put it back together.
good luck.
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