D20 leaking

[76_bronco]

My front yoke seal is leaking on my D20 t case. Getting ready to order some stuff from JBG anybody know what the correct seal is that I need?

Thanks yall, Dan

 

[70_Steve]

That seal is nothing special. I just replaced my seal (twice, but that's another story) and got it at NAPA for around $20. Probably got the box still in the trash can in the garage. There's also supposed to be an o-ring under the washer holding the yoke on to seal between the output shaft and the yoke. There was just another thread about this. Either go find another o-ring at some hardware store, or do what I do... I slide the yoke into place, then fill the void where the o-ring should go with RTV. Then thghten the nut. I've never had this leak, but I've never had the o-ring seal...

 

[76_bronco]

went to napa looking for it and they gave me 3 seals none being correct.. Is the front and rear both the same seal?

 

[70_Steve]

went to napa looking for it and they gave me 3 seals none being correct.. Is the front and rear both the same seal?

Dam-! Find another store??? Yes front and rear seal is the same.

SKF Part # 15450
NATIONAL Part # 450185
TIMKEN Part # 450185

Got all these numbers from Rock Auto online. I really like their prices! The last seal I used was the SKF..

 

[needabronco]

A very common driveline shop repair is to use RTV on the splines between the yoke and the shaft to cure the leak there. There was 0-rings there but they didn't/don't work very well. The only other fix is to replace your yoke, and probably do the same. I would replace the seal and use a very small amount of RTV (thin film) on the spines and bolt it together.

 

[76_bronco]

ok ill try again with those numbers and see if I can get the right one

 

[67broncorebuild]

I just fixed my D20 problem you have.
I noticed mine was leaking down the front output shaft, and dropping out the U joint. I replaced the main seal on the diff box thinking this is where the leak is coming from. That wasnt the case, i needed the o ring on the output shaft.
I didnt even have a washer. Went to local hardware store, got a rubber washer just big enough to fit in the yoke, big enough in the center to go over the threads on the shaft. I got a washer and tightened everything up, and no more leaks!