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2 STUCK drain plugs. I’ve tried everything.. what do I do now??


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Cwconlon
New User

Sep 23, 2021, 5:22 AM

Post #1 of 10 (201 views)
2 STUCK drain plugs. I’ve tried everything.. what do I do now?? Sign In

I am changing the fluids on my GEHL skid loader. It’s an old machine and this is my first time doing this so who knows how long these plugs have been stuck.
One plug is for the wheel drive and it takes a 5/8 square bit. Stuck!

The other is for the gear box. This is under the machine and is now completely rounded, perfect circle.
I have tried all that I can, I’ve used 3 different brands of penetrating oil, tapped with hammer, given it all my strength with a socket wrench. I’ve even bought those clover 🍀 bits made for rounded stuck bolts/plugs. This got tight but ultimately rounded it smaller and smaller.
I don’t know what to do. I’m thinking maybe a blow torch on the bolt but what are the chances it catches fire? These tanks both hold aw-32 but there’s saturation from oil all over..

The bolt under the machine is what I’m most worried about. It’s about 7/16 in size now and there is only about 9” of clearance under the loader…
I feel what’s left of the bolt will eventually break off. Welding something on it or continuing to torque it, it will eventually break. So what then? Should I consider that permanently closed and create a new drain next to it?

The square plug on the side for the wheels is easy access and I feel with a 24” ratchet might help. Otherwise I will just have to suck the fluids out from the top and change them that way.
The gear box doesn’t have that option and NEEDS figuring out…

I’m just at a loss right now.. so frustrating. Any professional advice will help.


Hammer Time
Ultimate Carjunky / Moderator
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Sep 23, 2021, 7:00 AM

Post #2 of 10 (196 views)
Re: 2 STUCK drain plugs. I’ve tried everything.. what do I do now?? Sign In


Quote
I don’t know what to do. I’m thinking maybe a blow torch on the bolt but what are the chances it catches fire?


I think you are missing the theory of what heat does for you. Heat make metal expand so heating a bolt not only makes it tighter but it softens the bolt and makes it weaker. Heat is used to heat the area surrounding the stuck bolt so it would expand away from the bolt. Not likely to work in your case. About the only advice I have is not to let the head get destroyed in the first place. Use the proper tools for a tight and solid fit and replace the plug at the first signs of wear.

You have a pretty serious problem at this point. The welding trick likely won't work because you would have to use a considerably smaller shank to have room to weld and that won't be strong enough. The last resort may be drilling out the center until an extractor will grab it tight enough to remove it.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Cwconlon
New User

Sep 23, 2021, 9:43 AM

Post #3 of 10 (185 views)
Re: 2 STUCK drain plugs. I’ve tried everything.. what do I do now?? Sign In

Thank you. I just figured since heat breaks up rust, it will loosen the bolt.

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Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Sep 23, 2021, 10:04 AM

Post #4 of 10 (183 views)
Re: 2 STUCK drain plugs. I’ve tried everything.. what do I do now?? Sign In

Rust is not really your problem. Anything that holds oil doesn't rust the threads. Maybe the head will rust off but since you stated this had a square head, that tells me it's going to be tapered pipe thread plug and simply too tight.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Tom Greenleaf
Ultimate Carjunky / Moderator
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Sep 23, 2021, 11:19 AM

Post #5 of 10 (175 views)
Re: 2 STUCK drain plugs. I’ve tried everything.. what do I do now?? Sign In

A future time: With "square" things (assorted for old stuff) use REAL square socket, hard to find you want a 4 sided square not 8 then NEVER HAVE THIS BATTLE AGAIN,

T



Cwconlon
New User

Sep 23, 2021, 1:56 PM

Post #6 of 10 (164 views)
Re: 2 STUCK drain plugs. I’ve tried everything.. what do I do now?? Sign In

Can you clarify that reply please? It is a little confusing.. real square socket?
Are you just recommending that I find a new plug with a hex vs square?
Thanks


Tom Greenleaf
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Sep 23, 2021, 2:38 PM

Post #7 of 10 (160 views)
Re: 2 STUCK drain plugs. I’ve tried everything.. what do I do now?? Sign In

Yes > Instead of a socket that is a hex (6) or (12 point) get one that is 5/8th square. They make 8 point ones but 4 would have full grip on square.
Lots of older stuff used square nuts and bolts all over - I own one still! If not easy to find there are square wrenches, some came with machines/vehicles,
Tom



(This post was edited by Tom Greenleaf on Sep 23, 2021, 2:42 PM)


Tom Greenleaf
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Sep 23, 2021, 2:47 PM

Post #8 of 10 (153 views)
Re: 2 STUCK drain plugs. I’ve tried everything.. what do I do now?? Sign In

Sorry for 2nd post in a row. IF you are in a real jam AFTER it's out and can't find the right one to replace it > I MAY HAVE TWO OF THEM IN STOCK > I bought all nuts, bolts of any kind from a defunct general auto/truck/machine parts store OMG 40 years ago! Tom


Hammer Time
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Sep 23, 2021, 3:31 PM

Post #9 of 10 (148 views)
Re: 2 STUCK drain plugs. I’ve tried everything.. what do I do now?? Sign In

Tom is basically telling you how to avoid this in the future. That socket won't help you now if you destroyed the one that's in there now.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Sep 23, 2021, 3:31 PM)


Tom Greenleaf
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Sep 23, 2021, 6:31 PM

Post #10 of 10 (131 views)
Re: 2 STUCK drain plugs. I’ve tried everything.. what do I do now?? Sign In

It's old and could would happen again. Nothing I know of uses these are probably also a funky type of plumbing threads that really seal. Used in even gas/fuel tanks vehicle or other even metal storage tanks once to let water out. NBD most would just use a pipe wrench on them so this is what happens.
I'm not there scoping out exact issue but might try drilling a hole through the old plug and thread in a smaller one tap and us a brass plug still available and choice of square or hex just smaller I'm pretty sure that this one,
Tom






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