Navy Tom

New User
Hey guys I am new to this forum, and new to the tractor world, recently acquired a 1951 TO20 from my wife's extended family and plan to get her back in good running shape. The right hand side rear axle has an awful leak in the rear hub and oil has gone everywhere in the brake drum, I believe its the outer seal that needs to be replaced, but I cant seem to get the axle out does anyone have any tip or tricks to this, also is there any other recommendations on what could possibly be causing the leak and what should I replace while I have all this apart. thank you!
 
It's the axle seal. You will need to replace the brakes after you replace the seal. Do you have the drum off? That's usually the hard part about getting the axle out. Axle should slide out pretty easy after everything else is out of the way. You may want to replace brakes on both sides. Pay attention to the metal shims when the axle comes out. You will need to put them back same way. After you finish, with both wheels off the ground, out of gear, turn one wheel forward and the other should turn backward. If they turn same way you need another shim(s). If other wheel doesn't turn, you need to remove shim(s).
 
install the shur seal. works great on to- 20 2 n 9 n. To-20 had weak outer seals new ones most of the time will not last long. I tried new seals on mine twice. Installed sure seals 13 years ago and still going strong.
 
Thank you all for the information, I did get the drum off, I removed the six bolts and lock washers on the back of the brake plate or axle retainer assembly, but the axle won't just slide out, should I use a puller / slide hammer ? I'm afraid to put to much force on it and strip/ damage those back studs , I do have a service manual and I have read through that , I will look in to those longer lasting seals, can I order them through YT?
 

Have you loosed the brake rod at the diff housing so it will come out. It might need a bit of a tap with a hammer to loosing it up. But dont go crazy, I used sure seals, alot easier than replacing the bearing and collar unless they are stuffed.
 
What do you mean stuffed? I don't plan to remove the axle housing,
just the axle itself, do I need to remove the housing as well to install
the sure seals?
 
(quoted from post at 17:06:01 10/13/16) What do you mean stuffed? I don't plan to remove the axle housing,
just the axle itself, do I need to remove the housing as well to install
the sure seals?

"Stuffed"=Australian slang for broken, messed up, FUBAR, etc. :D
You won't need to remove the housing to install the seals. Be sure and order the gaskets that go between the brake backing plate and the axle when you order the seals.
BillL
 
The picture helps a lot thank you, a couple more stupid question and
I hope I get this done finally, I see that you have the six studs
removed on axle shaft retainer, I have removed those bolts but I can
get those studs and retainer plus axle and wheel hub to back out of
the housing, I have removed the brake rod, I just don't see how to get
it out, I have tapped the on the studs with a wood block and hammer
and I have tried putting the drum inside out and used it as a make
shift puller, is there a step I'm missing here I have read the service
manual several times and I have followed all the steps, I think haha
 
Ok great news I used a slide hammer and the axle finally came out
although I think I loosen that sweat cooler that holds the bear tight so
I'll have to press that back down...but my final question is with those
sure seals do you need to pack the wheel bearing with grease
because I assume those new seals will prevent gear oil from reaching
those bearings ? Just want to make sure that's what I need to do...
Again thanks for all the help, like I said this is a new challenge for me,
never worked on anything like this tractor before!
 
Possibly these pics are of some assistance?

Bob..
a240200.jpg

a240201.jpg
 
Hey also when I pulled the axle out, that retainer hub that holds the
bearing and original outer seal, has some play, I though maybe that
shrink cooler you would remove if you didn't use the sure seals has
backed off wiggle using the slide hammer, I tried heating it up and
using a press to push it down and tighten up that retainer hub, but no
luck, doesn't want to move so it that play okay or do I need a stronger
press, the bearing looks fine from the back side and the cage is t
damaged either, what's normal ?
 
Hey so I got the seal on and put everything back together, shims and
everything and did the wheel direction test and it all good, except
there still some oil leaking out from the shims between the housing
and brake back plate, I'm at wits end here, I cleaned those shims off
best I could and the housing and back plate to make as clean a
matting surface I could, I don't want to pull all that out again, it's a real
small leak, maybe with some think hub oil it will help slow it down?
 

Oil shouldn't have gotten past the new seal as along as it wasn't damaged when you put the axle back in. How high is your oil level? Remove one of the lowest screws on one of the side covers and let the oil run out. After that make the dipstick at that level.
 
(quoted from post at 02:50:11 10/22/16) Hey so I got the seal on and put everything back together, shims and
everything and did the wheel direction test and it all good, except
there still some oil leaking out from the shims between the housing
and brake back plate, I'm at wits end here, I cleaned those shims off
best I could and the housing and back plate to make as clean a
matting surface I could, I don't want to pull all that out again, it's a real
small leak, maybe with some think hub oil it will help slow it down?

I had the same problem. Did you use 2 gasket. Check this out and look at the manual. I am going of memory here.

You need a gasket between the shims and the backing plate. Another gasket between the backing plate and the axle.

S like this. Axle housing>shim/s> gasket>backing plate>then inside brake plate go's the 2nd gasket> axle...
 
Thanks, I did look at the service manual, haha it's hard to tell. It's not
the best tech manual I have ever read. But it makes sense because
oil leaks threw behind the shims, unfortunately I only ordered one
gasket and used it between the the back plate and axle retainer, the
leak is real small, not enough pool up on the rim just a smear on the
back plate. I'm not taking it all back apart now hahaha, don't have the
time, should I run a little of that hub oil in there and thicken it up, I
read online about some guys doing that to slow leaks or prevent
leaks?
 
Hi I am currently redoing My brakes and noticed some oil leaks.
so I pulled out the axle, the brass shims were broken and out of place so I have ordered new ones.there is also one on the inside of the backer plate brake side, my manual does not show the plate nor do the pics on your post. can you tall me were ?
 

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