Barrel Removal

[planedick]

I am in the process of changing the barrels from one engine to another. I had heard everyone has had a problem getting them off the cases. I decided since I was going to do it twice I should find the easy way to do it. I found that there is a ledge under the casting beside the #2 cylinder down in the chain galley, so I made a tool to hook under that edge and extend up to the area between the head bolts and a peice of aluminum angle with holes for said head bolts....



I then put two nuts on the bolts next to the #2 cylinder and the chain galley......



Next the angle and the hook was placed over the head bolts and the the hook over the angle and held it in place with vice grips. I then turned the nuts to the left which raised the angle and hook placing a good deal of pull on the barrels so when I tried the pry points on the front I was able to break the bond easily....



Next I released the vise grips, run the nuts back down and placed a large washer between the hook and the angle, gripped it again with the vise grips and continued to raise it more.

Just though someone might be interested next time they try to remove the barrels.....

[mro]

I've had to wrestle a few off and one really recieved some serious machanic talk before it decided to cooperate...
Pretty cool idea there and later this year when I start on another project if it has a problem coming apart might just try that.


mro

[trbig]

Naw... I'd rather beat on the cooling fins and pray they don't break! lol.

Another one of those "DOH!! Why didn't I think of that" things. That is definately a lot more "Meat" to grab onto for leverage than what they supplied at the factory.

BUT... wanna tell us about what was hammering on the tops of the # 2&3 pistons??


Tod

[planedick]

Hammering?

I didn't see anything indicating anything hammering the pistons. There is some white deposits on them making me beleave what I had figured happened to them to cause loss of compression and that was that they were run too lean for too long.

[prometheus578]

"It's about time..."

Planedick...
After all these years, you've finally written something useful.

Outstanding idea!
Just proves that if you stand there and stare at something long enough, inspiration eventually comes.

Planedick, did that little hook on the end need to be "recurved" several times or did it hold it's shape?
I would think that it would have to had been made out of stouter stuff... considering the load it's pulling and the obstinacy of the base gasket.
A great tip... worth remembering for when the time comes.
(those pry points are about useless)

[mro]

(those pry points are about useless)

Just need the right kind of pry tool
and if that fails call planedick


mro

[planedick]

Pry bar

The material I used for the pry bar was some leftover mounts that came with a set of small bags. The mount material was not stout enough for that but since the point I was using to pull onto was very narrow the small radius bend held untill the job was done. I am considering making a tool more substantial and less of a blacksmith type for the next set. Maybe some 4130 so it won't bend at all and a thicker peice of angle too. These things were made from junk lying around. Real cobbish, but it worked....

[planedick]

Darn

This was supposed to be with the barrel remover thread...
Maybe some moderator can put it where it belongs.....?????

[prometheus578]

I've got a forged gear puller arm that I think I'll use when the time comes again.
Definetely an idea to remember.

[trbig]

This has helped me also.. I had always thought of using the top of the bike frame where the tank sits to pull up somehow on the head. With a long piece of 1/2" all-thread welded to a hook, you could have a plate or bracket on top of the frame with a hole in the center for the all-thread to go through up between the two frame tubes and between the wires... stick a nut on the all-thread and tighten it down onto that plate with the hook where it needs to be... and pull it right up. You could use the same setup and turn the hook to the other side if only one side is letting loose. No need for prying or anything I would think.

Although I've never had any problems with removing the heads... I would think this would raise up cylinders as well. I would have liked to been able to try it before I destroyed the last set that were rusted up on the pistons... Maybe even a double sided hook to catch both sides.


Tod

[olebiker]

Planedick you have taken ALL the FUN out of pulling the cylinders. What is the point of having a rubber mallet. Oh and thanks. It seems so simple but I never would have thought of it.

Carl