Snap ring in ZTN front hub

Jerry Grant · Sep 12, 2019

Restoring a front pedestal and wheel hub for a ZTN. I removed the bolts and the axle from the hub. I was thinking the 2 halves were going to come apart. But inside the hub is a snap ring that appears to be keeping the 2 halves from coming apart. Assuming this needs to be removed in order to get my new tire and tube mounted. How do you get the snap ring out? Is there a trick or a special tool?

J.Wondergem · Sep 13, 2019

I can't help you there, I've never had mine apart.

Ill John · Sep 13, 2019

Maybe someone with a parts manual can shed some light on this

brian(MN) · Sep 13, 2019

Are you trying to split the rim so you can replace the tube/tire? or are you working with the bearings?

Brian

J.Wondergem · Sep 14, 2019

(quoted from post at 21:38:38 09/13/19) Are you trying to split the rim so you can replace the tube/tire? or are you working with the bearings?

Brian

The way I read it, he's trying to replace the tire and tube.

SWMolines · Sep 14, 2019

There are no snap rings involved with splitting the rim to change tube and tire. Just remove the bolts.

Jerry Grant · Sep 16, 2019

I am trying to get the two hub halves apart to remove the existing shreaded tire off and a new tire and innertube on. I have removed the bolts holding the 2 hub halves together and removed axle assembly including the bearings so you can see all the way through. There is a snap ring inside holding the hub halves together. The parts catalog shown above by swmolines shows the all the parts to the axle with bearings and seals. But since the snap ring is not part of the axle assembly, the snap ring is not shown there. In Repair Catalog R-782L page 121 Group 3A, the half hub comes with a snap ring. The snap ring needs to be removed in order to get the 2 part hub apart. I need help getting the snap ring out. Was there a special tool for this? Most snap rings I have seen have holes for a snap ring tool but no holes here.

SWMolines · Sep 16, 2019

Hmmm. I have had numerous hubs like the one in the parts photo I posted apart and have never needed to deal with a snap-ring to separate the two rim halves.

Can you post photos of the parts?

Jerry Grant · Sep 16, 2019

I think I like the hubs you took apart rather than the one I have. If yours never had a snap ring, I may not put the snap
ring back in. "When" I get it apart (positive thinking here) I will post pictures of the parts. I did try to get a
picture of the snap ring in place through. Hopefully, you can see it inside the hub.

J.Wondergem · Sep 16, 2019

(quoted from post at 16:11:06 09/16/19) I think I like the hubs you took apart rather than the one I have. If yours never had a snap ring, I may not put the snap
ring back in. "When" I get it apart (positive thinking here) I will post pictures of the parts. I did try to get a
picture of the snap ring in place through. Hopefully, you can see it inside the hub.
<img src="https://www.yesterdaystractors.com/cvphotos/cvphoto36648.jpg">

I can't see the snap ring in your picture for sure, but would that be the snap ring in the picture above that looks like it keeps the bearings from going into the hub too far?

SWMolines · Sep 17, 2019

Unless my eyes are not focusing correctly, all that snap ring does is position the outer bearing cone in the the hub by providing a shoulder to press against. The half of the rim that separates from the hub is piloted onto the hub (tightly at times).

SWMolines · Sep 17, 2019

Since the tire is scrap, you might elect to cut the tire sidewall and get it off the rim. Then you can likely rig-up a press if some kind to press the two halves apart.

MMDEL · Sep 18, 2019

SW Moline is right those snap rings are a backup for the Bearing Race. The hub is not in two halves. It would be weak if it was. The rim halves are rusted together if you have all the bolts out. It no doubt has been together since it was born. Maybe with a little paint to glue it together,lay it on it's side and let it soak for a while with a good penetrating oil. It is going to be the worst at the hub and the outer wheel center. With part of the tire out of the way, you might be able to take a slim chisel and go around the split to wedge it apart.
MMDEL

Jerry Grant · Sep 18, 2019

OK, I officially stand corrected. When I couldn't get the hub apart, I saw the snap ring inside
and I was sure I needed to get it out. But when someone said the snap ring was for holding the
bearings in place, I took a closer look. Sure enough you guys were right all along. Starting with
a putty knife and little by little it came apart. I am pretty sure this hub has never been apart.
Thanks for everyone's comments.

SWMolines · Sep 19, 2019

Excellent!!!! I'm glad you got it apart without any damage. I have several hubs assemblies here that someone has broken a rim flange while trying to remove the tire.

There are 3 L's when it comes to repairing old tractors:

Look at what you are dealing with and sort it out.

Listen to others that have been there and do that before.

Learn from other's mistakes so you don't end up making your
situation worse.

Enjoy the rest of your project.

SWMolines · Sep 19, 2019

I hate it when I cannot proof read my own typing:

Listen to others that have been there and done that before.

Snap ring in ZTN front hub

Jerry Grant

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