Trying a cheap fix on an axle leak

[gaber6]

I already replaced the inner seal, but there were grooves on the metal part where the seal rides. Since it is a PITA to pull and replace that part, I thought I'd spend $7 and get the surface smooth. Anyone have luck with this product on similar applications?

 

[ElZilcho]

I'm extremely dubious... on the heavy and medium duty trucks (International, Freightliner, etc.), if you've worn a groove into the axle, you can buy over-sized seals and hardened sleeves that slide over the seal surface. Those are usually good for +100K miles but they're in 55-65 HRC range. I'm doubtfull that J.B Weld has either the hardness or wear characteristics to last very long. Additionally I'm doubtful of the ability to get a really clean mating surface. Any eccentricity in the finish or porousness would massively accelerate seal wear.

On the other hand... I'm continually amazed at how effective modern polymers are and would have nothing but respect for you should you attempt this experiment and report out.

 

[keakar]

I already replaced the inner seal, but there were grooves on the metal part where the seal rides. Since it is a PITA to pull and replace that part, I thought I'd spend $7 and get the surface smooth. Anyone have luck with this product on similar applications?

boat trailers have a sleeve that is used to fix an issue like yours on trailer axles but i dont remember what its called.

it was a very thin sleeve liner that goes over the shaft where the seal rides.

https://www.ebay.com/itm/291926870184?rmvSB=true

i am not sure if they have anything like that for a drive shaft but might be worth looking into.

short of that you just have to replace the part since a seal has very small margin for error on fitment and what you are thinking might make it "look" smooth but i doubt it would seal well at all

 

[gaber6]

At this point, it's worth trying for $7. I'm confident in my ability to clean/prep/smooth the final surface, but I do agree that if it's off a little, it'll wear out quickly. But being that it's not sealing at all now, it'll be better than nothing for the time being. I'll stick it on there next weekend if the sun is going to be out.

 

[catrains]

I already replaced the inner seal, but there were grooves on the metal part where the seal rides. Since it is a PITA to pull and replace that part, I thought I'd spend $7 and get the surface smooth. Anyone have luck with this product on similar applications?

I have seen seals made differently so that the replacement will not ride in the old area. so it is possible to find a seal that will do this ..

common on transmissions output seals .
buy a few different manufactures..

using the goop will not last...

 

[ElZilcho]

Just promise us you'll report back no matter how it works out! It'll be interesting to see how long it holds up. I want DATA!

 

[gaber6]

I'll let you all know for sure. Just started a new gig working graveyard, so I'm sleeping while it's light out.

 

[gaber6]

I have seen seals made differently so that the replacement will not ride in the old area. so it is possible to find a seal that will do this ..

common on transmissions output seals .
buy a few different manufactures..

using the goop will not last...

An extended seal would have been a great idea... That should be the first option that is given at auto parts stores..

 

[gaber6]

Well, it's 70 and sunny in Cincinnati today, so getting it done. First layer in the groove. I'll sand it smooth after it cures, just leaving the epoxy in the groove. Hopefully that's all I'll need.

 

[gaber6]

Going to put a skim coat and give some meat for the epoxy to hold onto. With just the tiny groove, it just doesn't seem like it'll hold.

 

[gaber6]

The skim coat all smoothed out is working so far. I'm not super-confident on it lasting 6 months, but is fine to tide me over for now.