rear diff leak

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rear diff leak #497659 09/04/04 05:41 PM

Joined: Jan 2004

Posts: 36

Earth

trey58d

Getting the Wheeling Fever

I have an 87 runner that is leakin gear oil from the fill nut. my question is, what is the best oil to put back in it, and should I replace the washer/crush washer between the diff and bolt on the fill hole, or just torq the snot out of it. I have a pic, but need to get it hosted if someone needs to see it. thanks.

Re: rear diff leak [Re: trey58d] #497660 09/04/04 06:00 PM

Joined: Jan 2000

Posts: 12,153

N. California. USA

4Crawler

Web Wheeler

Quote

Refill with whatever type of oil you are running, factory oil specs are listed on my page. First, check your breather, make sure its open. If not, pressure ca build inside the axle and force gear oil out past the seal.

You can try tightening the nut down, untake it, torque down to 90 ft.lbs. or so (much higher and you risk affecting the crush sleeve) then re-stake it and see if it helps. Otherwise, the pinion seal is likely worn out and needs replacing.

r.c.brown@ieee.org
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Project: 4Crawler
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Re: rear diff leak [Re: 4Crawler] #497661 09/04/04 10:26 PM

Joined: Feb 2000

Posts: 456

dknight

Mudrunner

Hold on Roger. I think he said the oil fill plug, not the pinion nut. Do not torque the fill hole bolt to 90 ft/lbs or you'll strip your case for sure!
If it is leaking, yes you should replace the washer, only a buck or two. It should never really leak much out of the fill hole since the level is supposed to be at the bottom of the hole. As long as you have the fill bolt removed, you might want to drain and replace the oil (you might have water in
there if it is overfilled). I like redline gear oil.

Re: rear diff leak [Re: dknight] #497662 09/04/04 11:25 PM

Joined: Jan 2000

Posts: 12,153

N. California. USA

4Crawler

Web Wheeler

After re-reading that, yes, looks like the fill plug. Yes, replace the washer (look in the parts number thread for the p/n) and tighten it down. I guess the "crush sleeve" part got me thinking of the pinion nut.

r.c.brown@ieee.org
TruckEditor@tlca.org
Project: 4Crawler
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