Pipe wrench for stripped diff fill plug?

[homebuilt burner]

It may help to grind the end of you Allen off a little so it has almost a sharp edge. Sometimes the very end get rounded off and will make it cam out more easily. Also, a product called Screw Grab if you can find it. It comes in a small tube and has a grit to it that is meant for screw head to keep them from cramming out, it may help in this application.

 

[pbon]

Maybe hammer in a torx head rather than hex. It will grip better. And spray around washer and head with penetrant first since the hammering or tapping might help the penetrant get to the threads. And don’t use an impact. Use a ratchet or breaker bar keeping it square and applying pressure into it — give that a quick yank and it might break free rather than strip again. The sudden yank seems to break stuff free better for me, while an impact wrench tends to strip again and steady slow force has mixed results.

 

[gatlibs]

Try to continue tightening bolts when they are seized. Sometimes they break free in that direction easier.

 

[egdede]

^^^ This is my approach to 50+ year old galvanized water pipes. I put my pipe wrench on the ******/fitting, tighten it a C-Hair then loosen it. An old plumber showed me this trick 25 years ago. I've used this technique since then without incident (broken *******, etc...).

Now I'm the old one : (

 

[nelstomlinson]

I would suggest using a short piece of Allen wrench in the plug to hammer on. That way you don't risk damaging the internal hex. It also carries the impact down to the threaded area better.

If the internal hex is ``darn near stripped,'' lightly peening the edges of the plug might tighten the fit and require pounding in the hex key, which would be a good thing.

Once you have it out, weld on a male hex?

 

[nelstomlinson]

Also, a product called Screw Grab if you can find it. It comes in a small tube and has a grit to it that is meant for screw head to keep them from cramming out, it may help in this application.

Is that what they call valve grinding compound now? I've used valve grinding compound for that for years, learned it years ago from a good old boy who'd been doing it for decades ...

 

[Shadowdog500]

Is that what they call valve grinding compound now? I've used valve grinding compound for that for years, learned it years ago from a good old boy who'd been doing it for decades ...

I bought a tube of that stuff years ago and it turned out to be identical to valve grinding compound. I use valve grinding compound as well.

 

[Shadowdog500]

These are made for the problem you have.

Irwin Tools Hanson 53227 Hex Head Multi-Spline Screw Extractor Set, 25 Piece https://www.amazon.com/dp/B0002SRG66/?tag=atomicindus08-20

 

[joe_pinehill1]

did you ever get it off?