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Old 01-09-2018, 08:11 AM   #1
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Rear Pinion Seal

Leaking....gotta replace it. Searched back 3-4 years but found nothing. Anyone done this? Part is like $10-15. I'm sure a shop would add another few hundred on top of that to do it for me. I'm a pretty confident DIY'er. Any tips from the pros?
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Old 01-10-2018, 12:50 PM   #2
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I generally farm out transmission and rear end work. But if you have a service manual and a inch/pound torque wrench, I don't see why it wouldn't be possible to do it yourself.
Really, the only tricky part is to get the pinion bearing preload set back to the original setting.
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Old 01-10-2018, 01:05 PM   #3
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That's what I've been reading. (pinion bearing preload). Hmmm.....don't want to screw it up, but then, gotta learn somehow....
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Old 01-10-2018, 01:28 PM   #4
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Now that I'm thinking about it, if I had to choose between gambling on one of the shops in the county that I presently live in, or doing it myself... I would without question do it myself! Haha
I have a awesome differential guy... But he is 4 hours away.

The only real "tip" that I can give you is once you start tightening the pinion nut during reassembly, you can't loosen it back up.. You must tighten it and check the preload frequently to avoid over-tightening.
The worst that can happen is you won't be able to get the preload set correctly, and then the crush sleeve will need to be replaced so that the proper preload can be set.
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Old 01-11-2018, 07:01 AM   #5
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I've always marked the pinion nut and shaft before removing the nut.....then return the nut to the same spot for seal replacement....never had a problem doing them this way!!
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Old 01-13-2018, 09:37 PM   #6
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Quote:
Originally Posted by Coosawjack View Post
I've always marked the pinion nut and shaft before removing the nut.....then return the nut to the same spot for seal replacement....never had a problem doing them this way!!
This is OK, as far as it goes. But, if it's done let's say 10 times this way, and one time it failed, the cost can be stupendous.....new gears, and worse.
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Old Yesterday, 11:47 PM   #7
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It's a really easy job but I'm an ASE master tech lol...

I never even check preload anymore I can tell if it's right by the feel..

But if you don't feel comfortable with it I wouldn't try it... not something you want to get way off.


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