Transfer case crack

First post. I messed up and need opinions.

I have a hair line crack on the upper side of my transfer case drain.

Should I buy a used case or clean and scuff it really good and JB Weld it??

 

Is it a through crack? Is it dripping?

 

Yes it’s dripping

 

drill a tiny hole at the end of the crack to keep it from spreading then JB weld would be my vote. Possibly bevel the sides of the cracks too

 

If it really is the upper, then no worries just yet, nothing under pressure in there, clean it nicely jb weld it and don't torque the fill bolt to hell. I had to tap mine over to a larger SAE allen plug after a lube tech stripped it.

 

It’s my drain hole. Thanks

 

It's still pretty minor, so you could still get away with JB weld after notching it nicely.

 

Youch!

How did this happen? (So I don't do the same?)

I'd try the drill tiny hole followed by JB Weld 1st and see if it holds.

 

I guess I tightened the drain plug too much. I put redline mt90 in my transmission and noticed the transfer case leaking. I thought it was the crush washer so I replaced that and then upon further inspection I noticed this crack. I feel like an idiot but at least it’s not the trans like I’ve seen a few cases on forums

 

Definitely drill a small hole or that crack will wander. I think JB would be fine for this application.

 

It's probably easier to do than you think. I'm coming up on my 2nd diff fluid change I've done on my truck. I'll be extra careful.

 

If you're willing to spring for some Belzona, you can KNOW it'll hold. People should put their location. I have a bit of it. I've threaded the stuff before and it held.

 

Clean it well with brake cleaner before applying the jbweld.

 

even better, clean, sand..(scotchbrite, steel wool), and clean.

 

https://www.ebay.com/itm/Belzona-12...209596?hash=item3afe6622bc:g:3PUAAOSwCb9aDkd9

not a bad deal if you're ready to buy now. This stuff will be harder than the aluminum but bonds very well. We have repaired everything from a high pressure pipe (emergency use only) to fixing those rusty shipping containers.

Edit: Oh, and I puttied up my sisters Corolla block once when she busted it in a freeze. (I would chastise her further but I did it once myself). Worked like a charm. I did drill the stop/start holes and put a string of dimples along the crack with the drill, it was pretty long.

 

I see you already mentioned scuffing it up. You know what your doing then, it'll be fine. I seriously doubt you'll ever have to replace this thing because of the crack. Low pressure, (extemelly low) and thick oil. It'll be fine.

Whatever epoxy you use don't be afraid to get it into the bolt threads and tap it out. inside and out is always better. Or rather at least to the very edge of the crack.

 

Torque wrench people...

 

Thank you for all the replies! Here’s another photo. Looks like the oil is going around the threads

 

Did you reuse the crush washer?

 

Photo