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Cylinder removal tool and Piston and Piston Compression Tool

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bbap
honda305.com Member
Posts: 253
Joined: Tue Nov 30, 2010 4:52 pm
Location: Webster, NY

Cylinder removal tool and Piston and Piston Compression Tool

Post by bbap » Thu Dec 30, 2010 12:17 pm

I thought I'd post this where others in the future/present may need this as much as I did.

I had a stuck set of pistons in the Cylinder in which I had been soaking PB Blaster for about 20 days total. They were going nowhere fast. I taped on them lightly with a piece of oak wood and a large hammer to loosen them for the last 24 hours but still nothing. I researched a number of posts within this forum and with that assistance, devised the PCT (Piston compression Tool). This worked great!
Image
Piston Compression Tool by nestwoodmotors, on Flickr
2nd picture:
Image
Piston Compression Tool 2 by nestwoodmotors, on Flickr

Then I was stuck - literally. I could not remove the Cylinder from the cases. I used a small sledge with pieces of oak, wood flooring and banged away at the front leading edge as well as a bit at the rear edge, but it would NOT come. I was considering more drastic efforts when Loud Mouse contactedl :) . I know he's a very busy guy but he took the time to help me (the neophyte) get my thoughts together and get this thing apart. What he suggested was working off the tensioner side due to the angle of attack. I was concerned about the upper end as it did not have alot of casting material to whack against, but he suggested I construct a steel attachment piece with 2 or more of the screws to the tensioner. When I had that made, I figured it actually may work with just some pressure. So I continued with his thoughts and made this. It is soo very satisfying when you feel/hear that little pop and it just comes apart with a slight twist of the wrench! I will call it a CRT "Cylinder Removal Tool":

Image
Cylinder removal tool.2 by nestwoodmotors, on Flickr

Image
Cylinder removal tool by nestwoodmotors, on Flickr

Image
Tool.1 by nestwoodmotors, on Flickr

Image
Tool.2 by nestwoodmotors, on Flickr

The Piston Removal Tool and the Cylinder Removal Tool are now combined into one. If you need to borrower it, just left me know (I need the sockets and extension though). It would be for postage only. If you want to make it, it's pretty simple.

Thanks again LM!
CA78 - 3111XX - Frame
CA77E - 3161XX - Engine

e3steve
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Location: Mallorca, Spain & Warsash, UK

Post by e3steve » Thu Dec 30, 2010 1:28 pm

Positive ingenuity! Jensen will be 'over the moon' that you eventually used the controlled method of persuasion.....

Only glad you didn't pull the threads from the upper crankcase, but that is, after all, at least monitorable with your process.

jensen
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Location: netherlands, huizen
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Post by jensen » Thu Dec 30, 2010 2:04 pm

Hi,

Very nice way to do it, I do it the same way (more or less)
Every time I sprayed the packing with penetrating oil, and made the pressure a little higher.
A 400 / 4 has a special hole under the cylinder to put a bolt in, so you can get it off that way.

Jensen
assembly of Japanese motorcycles requires great peace of mind (Pirsig)

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