rushane

I'm attempting to fix a rear diff leak where the driveshaft meets the diff. I've removed the driveshaft, then the pinion nut, but I can't seem to remove the driveshaft flange. Does this have to be pounded off with a hammer or should it just slide off?

Thanks.

82blueyota

should just slide off but if you take it off you will need to check to see if you have a sold spacer or a crush sleeve if you have a crush sleeve you will need to replace that or your pinion preload will be incorrect and the pinnion can come loose and contact the carrier.the bearings will not last long either.

rushane

So....what does it mean if it doesn't just slide off?

I took the nut off and the washer, but the flange is really on there.

4Crawler

iTrader: (3)

Should come right off:
- http://www.4crawler.com/4x4/CheapTri...eal/index.html

Might be some rust on the splines, give it a good whack with a dead blow hammer from the back side.

83

I've had one that needed pounding to get off, and other that just slid right off. So yeah, hammer it from behind a few times.

rushane

Alright, I pounded it off with a hammer. Now I have another issue. There is a circular spring floating around in there, I pulled it out. What is this, where does it go, and how do I fix it?

Thanks again.

83

Some information about your truck might help. Year, model etc. There was no spring anywhere in there with mine.

82blueyota

there is a spring in the seal look at the back part of the rubber part of the seal and see if it is still there.prolly what is causing the leak.look at the new seal ans see if it has a spring on it.make shure you coat the spring with grease to keep it in place when you put it.go to gearinstalls.com he has a wealth of knowledge and awsome pics.

rushane

Okay, I see the new spring (didn't see it earlier, panicked a bit). I've oiled it, thanks for the tip. Any tips on getting the whole seal to sit in the diff? Every time I get it close, I tap a bit and the other side pops out. Going on 15 minutes now, keeps popping out. I feel this is just a trial and error, but if you have any tips, I'd love to hear them.

82blueyota

you need to use some thick wheel bearing grease not gear oil on the spring.go to gearinstalls.com and read up on some of the installs he does you'll get the point after you see all the pics on his site.i used an old flange and tuned it around to put the new seal in.then taped it the rest of the way in with a large diameter punch.

82blueyota

you will also want to put some rtv on the outside diameter of the seal where it seats into the housing to prevent oil from leaking past that point

dropzone

iTrader: (6)

might wanna check out zuk's site:

http://gearinstalls.com/

but it sounds like if you follow 4crawlers procedure he posted for you, you may not hose your pinion set up



Roger shows you how to get the seal back in there with the 50mm socket

drew303

You can't tell whats in there just by taking the flange off. Would have to remove the pinion entirely to see it.

If im not mistaken, 1st gens all used crush sleeves? Wasnt it like prior to 79 Toyota used solid collars?

I have solid collars in my thirds because I chose to.

Also, your seal might be bad, true, but the flange itself might be worn (ie has a groove where the seal mates with it).. This will cause an oil leak mainly in a front third since they sit nearly level vs the rear that is tilted to match the driveline.

This is a problem i have right now, brand new pinion seal in the front but leaking because the flange has a groove worn in it. My front third 'flange' is from the rear axle which has seen about 220k miles.

83

Ohhhh. That spring. Right. Sorry.

1st gens don't have the crush sleeve. At least mine doesn't. I still don't see where he says what his truck is...but it's early and maybe I missed it.

82blueyota

1st gens can come with either crush sleeves or solid spacers my 81 2wd had a crush sleeve,my 82 has factory solid spacers,and the 83 i robbed thirds from had factory sold spacers.when i fixed the seal in my 2wd the outer bearing came right off the pinion must of lost its press fit over time.i retourqed it to 90 ft lbs and about a 1000 miles down the road the pinion came loose and was contacting the carrier.

rushane

Hey guys, it's a 1992. I finished the work, thanks to you guys. It isn't leaking, so that's a plus, but reading what you guys wrote after I was finished, I may be back under there soon. I didn't get the grease on it, nor did I replace the flange. I did re-torque the nut at 53ft-lbs, which is what it came off with. Hope I don't wreck anything.

Thanks again.

83

Don't replace the flange. There's a crush sleeve in there. Look at 4Crawlers writeup. Mine has a solid spacer so can't describe the crush sleeve, but if I remember correctly, 4Crawlers site has good photos of all of it.

82blueyota

the crush sleeve dosen't have anything to do with the flange.it is between the inner and outer pinion bearings.suggest replacing the flange because the seal wears a groove on the surface so even with a new seal it will still leak.
i dont mean to sound like i'm flaming you 83.no offense