How to fix a buggered fitting

[96kta]

Here is the cylinder off of my boxblade. As you can see, the fitting has experienced some trauma. It didn't leak when the previous owner demonstrated it, but it sure did the first time i tried it.

So my question is... Is there a cheap/reliable way to fix this?

Thanks
Steven

 

[kennyd]

Welcome to TBN

That bung will have to be cut off and a new one welded on. If this is above your abilities then you should find a hydraulic shop in your area that can do it.

 

[tommu56]

96kta
I would take the o ring off fitting clean the oil out off the threads and screw it in to correct orientation then braze the fitting in that position. just pull rod out to the end of cylinder and put some wet rags around cylinder to keep the piston seal cool

tommu

 

[96kta]

Thanks, this is not how I envisioned my first post (been lurking for quite a while now).

It's hard to tell from that photo, but the bung is only distorted about .25" down. The rest of of it looks straight. Since there is not much to loose bung-wise, I wonder if I could plug it to prevent shavings from entering the cylinder and grind/file away the distorted part enough to get it to seal.

Or as mentioned, brazing it. I don't have a torch setup, but am fairly good with the mig welder and the fitting is steel...

Thanks for the ideas. It gives me something to think about.

 

[tommu56]

If the boss is long enough to keep fitting from hitting piston pack some rags in hole put some grease on top of that then file away.

remove rags flush some hydraulic fluid in and out of port and see how it fits.
the only problem with the mig is getting the oil out of fitting to get a good weld
to mig it i would clean it out with alcohol let it air dry for a day or two and go at it with the mig

tom

 

[john_bud]

Step 1 - remove cylinder
Step 2 - take cylinder apart, clean and degrease
Step 3 - repair
Step 4 - clean and reassemble

I would cut off the old bung and weld on a new one. But trying to do it with it all in one piece is just asking for trouble. Especially as you can take that apart in about 5 minutes.

jb

 

[Wayne County Hose]

Step 1 - remove cylinder
Step 2 - take cylinder apart, clean and degrease
Step 3 - repair
Step 4 - clean and reassemble

I would cut off the old bung and weld on a new one. But trying to do it with it all in one piece is just asking for trouble. Especially as you can take that apart in about 5 minutes.

jb

Now come on John, why on earth would you take the one way to fix it right and throw out all these humorous rig it ideas?
Any job big or small, do it right or not at all.

Steven, there is no cheap and reliable way to fix most things. Taking it to a hyd shop and having a new bung welded on shouldn't cost you more than 75 bucks. If that's not cheap enough and reliable enough, I don't know what is.

 

[Farmerford]

Gosh, Wayne County Hose, I am sure glad I did not post my suggestion before you replied. I would just hammer the bulge back until it was round again. Might even fire up the torch and heat it a bit if I wanted the professional fix. In the (unlikely) event I could not hammer it exactly round, how about drilling and tapping it for tapered pipe; that way you would have one outlaw fitting to curse the next owner.

 

[3RRL]

Gosh, Wayne County Hose, I am sure glad I did not post my suggestion before you replied. I would just hammer the bulge back until it was round again. Might even fire up the torch and heat it a bit if I wanted the professional fix. In the (unlikely) event I could not hammer it exactly round, how about drilling and tapping it for tapered pipe; that way you would have one outlaw fitting to curse the next owner.

I love that idea Charles !!
Heck, depending on the cylinder, sometimes you can buy a new one for $75 bucks. But your suggestion costs nothing. As long as the threads hold that ORB fitting in there, and the "O" ring seals inside it and can't blow out, it should work just like new. I think that's why it leaks in the first place, because the hole is oblong where the "O" would normally seal.
That is a cheap (the cheapest) and reliable way to do it. Maybe get a new "O" ring for 2 bits?

 

[J_J]

If I want cheap, and sometimes I do, I would remove the o-ring, screw the fitting in as far as it can go, and MIG weld around the seam, making the ORB fitting part of the cylinder. If you are good and fast, the heat should not be a problem.