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D12 rebuild |
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hunter321 ![]() Silver Level ![]() ![]() Joined: 11 Jan 2021 Location: 52320 Points: 475 |
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I need more ideas for pulling the sleeve the slide hammer is not working
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steve(ill) ![]() Orange Level Access ![]() ![]() Joined: 11 Sep 2009 Location: illinois Points: 78570 |
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Like them all, but love the "B"s.
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hunter321 ![]() Silver Level ![]() ![]() Joined: 11 Jan 2021 Location: 52320 Points: 475 |
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That won't work the sleeve is chipped and broken at the bottom
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AC720Man ![]() Orange Level ![]() ![]() Joined: 10 Oct 2016 Location: Shenandoah, Va Points: 4750 |
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Hunter, you have taken on quite an ambitious job even for a seasoned mechanic. I give you a lot of credit for taking this project on, so your heart is definitely in it. Pullers do work well but it does seam to look like your sleeves are really stuck. I’m curious to know if the sleeves were broken at the bottom before you started or if they have broken as you have tried to pull them? I know it will cause you more work but I would be on the safe side and pull the engine. That way, if you can borrow a engine stand to mount it to you could flip the engine over and drive them out after you pull the crank. Most likely, seals, bearings, gaskets, will need to be replaced. Crank my need to be touched up. To do a proper job, you need to get it apart to see how bad the damage is. I’m not trying to discourage you but I don’t want you to struggle so much that you become discouraged.
Rob |
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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hunter321 ![]() Silver Level ![]() ![]() Joined: 11 Jan 2021 Location: 52320 Points: 475 |
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I have a engine stand and tools.
Now that It is home it is a bit easier to work on |
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hunter321 ![]() Silver Level ![]() ![]() Joined: 11 Jan 2021 Location: 52320 Points: 475 |
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The sleeves are wet sleves
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hunter321 ![]() Silver Level ![]() ![]() Joined: 11 Jan 2021 Location: 52320 Points: 475 |
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Is there anyway to not pull the engine and still replace the sleeve
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HudCo ![]() Orange Level ![]() ![]() Joined: 29 Jan 2013 Location: Plymouth Utah Points: 3342 |
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you will probley have jack up one side of the front axle to get the pan out or remove the front axle to get the pan off then you can in frame it but you need to mesure the crank journals you may have to pull it any ways to have crank work done
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hunter321 ![]() Silver Level ![]() ![]() Joined: 11 Jan 2021 Location: 52320 Points: 475 |
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I'm not sure if the sleeve I have is a wet sleeve or not. How do I tell.
If the replacement is not a wet sleeve I will need a new sleeve and Piston again |
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steve(ill) ![]() Orange Level Access ![]() ![]() Joined: 11 Sep 2009 Location: illinois Points: 78570 |
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all of the small Allis engines are wet sleeve... You are going to have problems jacking the sleeve out from the bottom, etc, with the crank in the way.. You should be able to pull from the top with a puller. Sleeve only needs to move up about 1/2 inch and then it will lift out easier..
In the end, i would pull the motor and lift the crank out.. Sounds like a lot of work, but you will learn a LOT OF INFO for future jobs... A couple of extra weeks now "in the shop" will be good in the long run.
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Like them all, but love the "B"s.
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steve(ill) ![]() Orange Level Access ![]() ![]() Joined: 11 Sep 2009 Location: illinois Points: 78570 |
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hunter... just for reference , here is a drawing of a "wet sleeve"... you can see the sleeve pilots into the block at the top, and seals with an o-ring at the bottom ... If you MOVE the sleeve up 1/2 inch, it pops free..
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Like them all, but love the "B"s.
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hunter321 ![]() Silver Level ![]() ![]() Joined: 11 Jan 2021 Location: 52320 Points: 475 |
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Should the sleeve have a grove for the o ring to sit in
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hunter321 ![]() Silver Level ![]() ![]() Joined: 11 Jan 2021 Location: 52320 Points: 475 |
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I'll post a picture of the pistion and sleeve I have when I get home
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WF owner ![]() Orange Level ![]() Joined: 12 May 2013 Location: Bombay NY Points: 4445 |
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It should have at least two grooves for O rings.
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hunter321 ![]() Silver Level ![]() ![]() Joined: 11 Jan 2021 Location: 52320 Points: 475 |
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I don't think the sleeve I have has any grooves in it
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steve(ill) ![]() Orange Level Access ![]() ![]() Joined: 11 Sep 2009 Location: illinois Points: 78570 |
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you have to have a groove to keep the o-ring from moving.. Where / what sleeve did you buy ?
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Like them all, but love the "B"s.
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hunter321 ![]() Silver Level ![]() ![]() Joined: 11 Jan 2021 Location: 52320 Points: 475 |
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I don't know. It was given to me by one of my friends who got it from a salvage yard from a d12 |
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WF owner ![]() Orange Level ![]() Joined: 12 May 2013 Location: Bombay NY Points: 4445 |
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Almost all AC tractor engines have wet sleeves.
On a wet sleeve engine, the only seal around the sleeves, between the cooling system (antifreeze) and the lubrication system (engine oil) are the O rings. When the O rings leak, usually caused by deterioration of the O rings with age or overheating the engine, antifreeze mixes with the engine oil. If you continue running the engine with contaminated oil, the contaminated oil loses it's ability to properly lubricate the bearings (which is where the most friction is inside the engine) and the bearings fail (very quickly). The result is a catastrophic engine failure. If the sleeve you have doesn't have grooves for the O rings, it is not the right sleeve for a D12 and should not be used. |
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hunter321 ![]() Silver Level ![]() ![]() Joined: 11 Jan 2021 Location: 52320 Points: 475 |
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i will look to see if the sleeve has a groove. if it doesent will i need a new one and a different piston as well
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steve(ill) ![]() Orange Level Access ![]() ![]() Joined: 11 Sep 2009 Location: illinois Points: 78570 |
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if it came out of a D12 or other small ALLIS... it has a groove... If there is no groove then i came out of other manufacturer and is probably a dry sleeve and wrong piston.
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Like them all, but love the "B"s.
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hunter321 ![]() Silver Level ![]() ![]() Joined: 11 Jan 2021 Location: 52320 Points: 475 |
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![]() This is the piston sleeve I have |
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SteveM C/IL ![]() Orange Level Access ![]() Joined: 12 Sep 2009 Location: Shelbyville IL Points: 8074 |
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Wrong...that had orings in the block not the sleeve.
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hunter321 ![]() Silver Level ![]() ![]() Joined: 11 Jan 2021 Location: 52320 Points: 475 |
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So I need a different one
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hunter321 ![]() Silver Level ![]() ![]() Joined: 11 Jan 2021 Location: 52320 Points: 475 |
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Do I just need a different sleeve or the sleeve and Piston both
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hunter321 ![]() Silver Level ![]() ![]() Joined: 11 Jan 2021 Location: 52320 Points: 475 |
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I'll get pictures of the pistion
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hunter321 ![]() Silver Level ![]() ![]() Joined: 11 Jan 2021 Location: 52320 Points: 475 |
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Should I sell this one
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DrAllis ![]() Orange Level Access ![]() Joined: 12 Sep 2009 Points: 19715 |
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Why don't you get your old piston and sleeve removed FIRST and then you'll KNOW what you need.
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hunter321 ![]() Silver Level ![]() ![]() Joined: 11 Jan 2021 Location: 52320 Points: 475 |
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The old sleeve Is destroyed
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SteveM C/IL ![]() Orange Level Access ![]() Joined: 12 Sep 2009 Location: Shelbyville IL Points: 8074 |
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Whatever is left of it still has to be removed so that's where your focus should be.
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hunter321 ![]() Silver Level ![]() ![]() Joined: 11 Jan 2021 Location: 52320 Points: 475 |
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how would i pull the engine
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