Help me find seals
 

Anyone know where I can find the seals for my eaton rear end? Ho52. Luckily the bearings and gears look great because they are spendy. I am looking for someone that might know what these 2 seals are called and where to get them. I have a small leak and I think its coming from one of these. My pumpkin looks good and tight

Also. It looks pretty strait forward, drop the drive lines and undo both areas that have bolts, is anyone familiar with this job? I love my eaton and although I will replace it one day it will only be when I have to lol. Thank you

Re: Help me find seals
 

What seals?? I only see a photo of the 3rd member. If they are like a 1 ton the axle is what is called a floating axle? if I remember correctly. There would be seals inside the hub that carries the bearings the rides on the sealing surface of the axle stub. Then there would be paper gaskets under the flange with bolt holes in it that actually turns the wheels and bolts to the outer end of the outer hub.
The wheel seals that seal on the outer surface of the axle housing tube have a fairly large inside diameter because the tube has to be large enough to allow for the axle shaft to pass through it.

Re: Help me find seals
 

Are you asking about the pinion seal or the gaskets?

Re: Help me find seals
 

Sorry guys I didnt clarify, I have never taken this apart so looking at it I assumed there are gaskets around the bolts that are after the yoke and also the big bolts around that. I just thought that there were always gaskets after bolts on the rear end. Does that make sense, sorry if I'm not describing it well. Thank you for any help.

Re: Help me find seals
 

Am I able to take the yoke out and then take off those other covers? I cant find anything in both my manuals that have the disassembly procedure for this axle.

Re: Help me find seals
 

Once you get it apart, you'll replace the pinion seal while you're in there, right? I've never had mine apart so I'm not much help, sorry.

I popped in here mainly to mention gasket sealers. For the two gaskets, whether you find new ones or make your own, don't use a silicone type sealer.
Permatex #81182 is made specifically for use with gear oils and it works great. You can use it without a gasket, but I like to apply a thin film of it on both sides of a gasket.

https://518370.smushcdn.com/1781372/...strip=1&webp=1

Re: Help me find seals
 

I re-sealed my ho72 with rockauto parts.

EDIT: Pinion and carrier and axle seals...

Re: Help me find seals
 

Unless it is really leaking bad, I would leave it be, Unless you know how to set the pinion bearing preload .

But if that isn't an issue.

1) the seal behind the yoke is the pinion seal.

2) the gasket at the 5 bolts is the pinion support housing gasket.

If the yoke sealing surface is grooved you might be sleeving it, or replacing.

Re: Help me find seals
 

I found a pinion seal part# from this old thread below .

Link to Pinion seal :https://www.jegs.com/webapp/wcs/stor...rsistYmm=false

Lots of part Numbers in Post #22 of this nicely documented thread that RPOZ11 started in 2016.

HO72 build LINK: https://67-72chevytrucks.com/vboard/...highlight=ho72

Hope this helps.









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Re: Help me find seals
 

I'm not sure exactly where the leak is coming from,I have tried to pin point it with no luck. I just replaced the front pinion seal the other day and it stopped that leak and just figured I would do the same with the rear as it has a leak also. It is either coming from the pinion seal or one of those 2 areas you identified. I figured I would just change the gaskets and seals and eliminate all the spots it could be leaking. I just didnt want to screw anything up by disconnecting everything. I thought about just marking everything so I didnt mess with preload. I do have the tools to set preload but I have never done it before. Thank you for identifying those areas.

Re: Help me find seals
 

This is great and helps alot. Thank you for taking the time to help me out. Much appreciated.

Re: Help me find seals
 

I’ve heard the narrative that the HO52 is dead since I joined as a member. These tales appear exaggerated still. Apparently NAPA has drums in stock for 71-72 yet.

Re: Help me find seals
 

Last question guys, can anyone tell me if this is a no spin diff? I have tried to find picture to compare but have not had any luck. Thanks again everyone.

Re: Help me find seals
 

check out these threads.

no spin link:https://67-72chevytrucks.com/vboard/...t=no-spin+ho72

Regular spider gear 3rd member parts break-dia.Link: https://67-72chevytrucks.com/vboard/...=no-spin+ho72a.









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Re: Help me find seals
 

Thank you sir!