3/4 in breaker bar

[DavidBarkey]

My understanding is that on old large cylinders (like 4" diameter) some excessive forces might be needed to open them up. Just because the pins coulde span the 4" it does not always mean you can actually open up a large cylinder. Also, the pins must have a good firm grip on the holes, otherwise you'll deal with something a lot worse if the pin holes in the cylinder cap get damaged.

In any case, I wasn't going to risk that, and ordered the wrench in the picture above, but it needs the 3/4 in drive.

Bob, I considered an adapter, but I'm not sure it would be strong enough to take some big forces (i.e. long extended pipe on breaker bar).

<img src="https://www.princessauto.com/ccstore/v1 ... ;width=300" alt="1/2 in. dr to 3/4 in. dr Impact Socket Drive Adapter"/>

@Eugen Put this on a torque wrench set on near max . You will have better control of the pin spanner . If you need more than a 200lbs force you will tear the pin holes up . you may need the assist of a blue flame spanner wrench to help your pin spanner wench .
If possible best crack loose on machine before removeal . If you need help with the blue flame spanner , just call you have my number . Most time it takes 2 guys to get them to budge . One on the torch and one on the wrench .

[propane1]

Good idea to do on machine while solid. Now because I’ve never seen one of these cylinders before. Can you take two hammers, one bigger that the other, and hold with the bigger one and tap with the small one and go around it to help loosen them up ?

More ramblin.


Noel

[Eugen]

I'm fortunate to have a mad tractor builder I can call on for a hand, thank you Dave!

Noel, not sure how you mean to do it with hammers. Also that type of wrench I have a feeling it doesn't lend well to impact. Similar to applying impact to a crow foot wrench I think.

Here's the cylinder with the one gallon paint can on it. Looks like someone's had a go at it.

[DavidBarkey]

@Eugen What he is talking about is shocking the rust by small deliberate impacts around the out side of the threaded section .Using 2 hammers keep the bottom from making dents in the tube . In a case like your BH . a combination of pressure from the wrench , heat, and shock may be required to get loose . Once loose, lube and work back and forth until all freed up.
"Noel, not sure how you mean to do it with hammers. Also that type of wrench I have a feeling it doesn't lend well to impact. Similar to applying impact to a crow foot wrench I think."

[propane1]

Well like you say Dave, shocking the treads. I meant holding the bigger hammer on the bottom tightly then taping with the lighter one all the way around on the treaded part of the cylinder, before putting Eugens tool on it. Helps to break them apart. Just like giving it a shock like an impact or air gun. But now that I see what Eugen is at. Ya can’t get around to far. I guess I’m rambling again, but when I was taking a 1 1/2” or 2” black iron union apart, on a propane line, I would always go around with the two hammers to help break it loose.



Noel

[JSinMO]

@Eugen The guys have given you good ways to make the tool you need. Not much I can add to there comments and ideas
Id like to throw out a safety tip or two. As you know the heavier the machine and tools get the higher the stakes can be. Gloves, safety glasses, be mindful of if the tool slips which way are you going to fall and what are you going to fall on.

It’s not that I’m the safety monitor or something, its just that I would hate for a guy to get hurt when I could mention something that could have prevented it. I’m sure most of the guys here could tell you a story of things going bad and show the scar to go with it. I know I can! I have found a quick reminder on safety once in awhile has made me think and keep me from getting hurt.

That concludes todays safety ramble, now go make the tool and get that dang thing apart!

[Eugen]

Great advice y'all, much appreciated. And yes Jeff, it never hurts to remind one about safety.

Waiting now for that tool from the wretched Amazon. They said I get it on the 18th, and now it's delayed and no tracking whatsoever.

[propane1]

@Eugen The guys have given you good ways to make the tool you need. Not much I can add to there comments and ideas
Id like to throw out a safety tip or two. As you know the heavier the machine and tools get the higher the stakes can be. Gloves, safety glasses, be mindful of if the tool slips which way are you going to fall and what are you going to fall on.

It’s not that I’m the safety monitor or something, its just that I would hate for a guy to get hurt when I could mention something that could have prevented it. I’m sure most of the guys here could tell you a story of things going bad and show the scar to go with it. I know I can! I have found a quick reminder on safety once in awhile has made me think and keep me from getting hurt.

That concludes todays safety ramble, now go make the tool and get that dang thing apart!

Great safety ramble JSinMO. Same as when you cut a tree down. Figure out your path to safety. And clear all obstacles out of the path.

Noel

[Toolslinger]

Well, I'm late to this party...

I hate one time use tools. We've all got them, and they're always a pain. I have a dozen custom made spanners for similar fittings hanging out on a shelf in the barn. Some are labeled, most are not. All made out of a thought that we needed the tool NOW. In reality, every one of those projects could have waited, but frustration can easily get the best of us...

I think you were on the right path buying the adjustable pin spanner. That's good for a whole bunch of sizes. I think you kinda went off the tracks when you decided to make a 3/4" breaker bar...
Don't get me wrong, I don't need 3/4" sockets or drive equipment often. Once a year possibly, but more like every 5 years if I'm being honest... That said, we've got some cheapo China 3/4" drive set. I sure wouldn't trust the ratchet for much, but the breaker bar is plenty stout... A quick look on Amazon yields a couple options for breaker bars under $50. There's even a Gearwrench right at $36... Throw a pipe on there, and have at it. The pins on the spanner are going to yield long before the cheapo breaker bar. You are far more likely to have use of a breaker bar in the future than the more specialized pin spanner.

My uncle gave me this little advise a couple years ago... For all the tools we have, and between him, and the collection of my father, and I, there are a LOT of tools, we often forget that the wallet can be an awfully powerful tool as well.

[Harry]

https://buffalo.craigslist.org/atq/d/bu ... 52205.html
Eugen i posted a link to a C/L ad. This is where I go to find a tool that I don't want to fork out the big bucks for. $40 for a 3/4" breaker bar doesn't seem to bad to me. I've picked up a few tools that way.
https://www.harborfreight.com/3-4-quart ... 98270.html
Harbor Freight has one for $21 but I would sooner go with one that is not questonable.

Keep the Peace
Harry