Leaking rear diff
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Cargo Master
Joined: Jun 2008
Posts: 2,923
Likes: 33
From: Sacramento Area
Leaking rear diff
While under the truck the other day, I discovered that what I thought was a leak from the rear diff cover is actually a leak from the bearing (?) or seal (?) where the drive shaft enters the diff.
...will it be cheaper to replace the rear axle or tear apart the diff and replace the bearing/seal?
...will it be cheaper to replace the rear axle or tear apart the diff and replace the bearing/seal?
Lead Driver
Joined: Nov 2008
Posts: 8,450
Likes: 70
From: South Jersey
The pinion seal is only around $12 and the new crush sleeve is another $10ish.... U must get a inch pound gauge and take a measurement with the old parts on then install new seal and crush sleep tighten and check inch pound reading. Go a little at a time till it goes back to where it was if you go more than the original reading you will have to buy another crush sleeve and start over. It's not very hard at all
iPhone from IB AutoGroup
iPhone from IB AutoGroup
Moderator
Joined: Jul 2010
Posts: 12,055
Likes: 1,559
From: Media PA
Sean did a write up here a few years ago. https://www.ford-trucks.com/forums/1...nion-seal.html
This is what I used when I installed a new pinion seal in my leaky 4.88 axle housing before I swapped it under my EX.
This is what I used when I installed a new pinion seal in my leaky 4.88 axle housing before I swapped it under my EX.
(so I've heard)
Senior User
Joined: May 2014
Posts: 133
Likes: 1
From: Southern NM
Replacing the pinion seal itself isn't too bad. I would definitely do that rather than buying a used rear end that you don't know anything about. It is probably less than 30 dollars of parts for the seal, crush sleeve, and pinion nut. If you don't want to do it, I would think a shop wouldn't even charge too much for something like that.
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