Rear axle oil seal

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Does anyone have any pictures to give me a idea how to fix a rear diff leak on my 08 pre runner.

 

Is there another name for the serration bolts? Cant seem to find them...

 

Had the issue on my 4runner, after replacing the seal 3 times, it turned out to be the bearing... I would check the axle housing for scratches near where the abs ring would sit. It didnt happen till i engaged the rear locker, after that the bearing had a lot of play, and leaked into the drum brakes. easy repair is to just get a axle side with good bearings and install it.

 

I got some new bearings installed. It was just $100 for labor with a 24 hour turnaround time. The shop put in new retainers at no extra cost (a $25 value) The Beck Arnley bearings from Rockauto.com were $25 each and are made by Koyo Japan (same as OEM that are $89 ea.) with new inner and outer seals the leaking has stopped. New rear brake shoes were needed to replace the oil saturated ones. The diff breather itself is a simple piece that can be removed and cleaned out; there is not much benefit to buying a new one. It is good to have rear brakes that work again.

And wow! What an old thread.