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D12 rebuild

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hunter321 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote hunter321 Quote  Post ReplyReply Direct Link To This Post Posted: 01 May 2023 at 5:22pm
I need more ideas for pulling the sleeve the slide hammer is not working
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steve(ill) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 01 May 2023 at 5:28pm
Like them all, but love the "B"s.
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hunter321 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote hunter321 Quote  Post ReplyReply Direct Link To This Post Posted: 01 May 2023 at 5:49pm
That won't work the sleeve is chipped and broken at the bottom
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AC720Man View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AC720Man Quote  Post ReplyReply Direct Link To This Post Posted: 01 May 2023 at 6:43pm
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
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 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote hunter321 Quote  Post ReplyReply Direct Link To This Post Posted: 01 May 2023 at 7:49pm
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 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote hunter321 Quote  Post ReplyReply Direct Link To This Post Posted: 01 May 2023 at 8:08pm
The sleeves are wet sleves
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hunter321 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote hunter321 Quote  Post ReplyReply Direct Link To This Post Posted: 01 May 2023 at 8:23pm
Is there anyway to not pull the engine and still replace the sleeve
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HudCo View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote HudCo Quote  Post ReplyReply Direct Link To This Post Posted: 01 May 2023 at 10:02pm
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 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote hunter321 Quote  Post ReplyReply Direct Link To This Post Posted: 03 May 2023 at 10:36am
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) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 03 May 2023 at 12:29pm
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.
Like them all, but love the "B"s.
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steve(ill) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 03 May 2023 at 12:34pm
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..


Like them all, but love the "B"s.
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hunter321 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote hunter321 Quote  Post ReplyReply Direct Link To This Post Posted: 03 May 2023 at 1:47pm
Should the sleeve have a grove for the o ring to sit in
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hunter321 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote hunter321 Quote  Post ReplyReply Direct Link To This Post Posted: 03 May 2023 at 1:48pm
I'll post a picture of the pistion and sleeve I have when I get home
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WF owner View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote WF owner Quote  Post ReplyReply Direct Link To This Post Posted: 03 May 2023 at 1:55pm
Originally posted by hunter321 hunter321 wrote:

Should the sleeve have a grove for the o ring to sit in

It should have at least two grooves for O rings.
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hunter321 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote hunter321 Quote  Post ReplyReply Direct Link To This Post Posted: 03 May 2023 at 2:39pm
I don't think the sleeve I have has any grooves in it
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steve(ill) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 03 May 2023 at 5:15pm
you have to have a groove to keep the o-ring from moving.. Where / what sleeve did you buy ?
Like them all, but love the "B"s.
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hunter321 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote hunter321 Quote  Post ReplyReply Direct Link To This Post Posted: 03 May 2023 at 11:08pm
Originally posted by steve(ill) steve(ill) wrote:

you have to have a groove to keep the o-ring from moving.. Where / what sleeve did you buy ?

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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Post Options Post Options   Thanks (0) Thanks(0)   Quote WF owner Quote  Post ReplyReply Direct Link To This Post Posted: 04 May 2023 at 4:40am
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 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote hunter321 Quote  Post ReplyReply Direct Link To This Post Posted: 04 May 2023 at 2:33pm
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) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 04 May 2023 at 3:52pm
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.
Like them all, but love the "B"s.
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hunter321 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote hunter321 Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 2023 at 8:19am


This is the piston sleeve I have
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SteveM C/IL View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 2023 at 8:46am
Wrong...that had orings in the block not the sleeve.
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hunter321 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote hunter321 Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 2023 at 11:11am
So I need a different one
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hunter321 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote hunter321 Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 2023 at 11:13am
Do I just need a different sleeve or the sleeve and Piston both
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hunter321 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote hunter321 Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 2023 at 11:15am
I'll get pictures of the pistion
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hunter321 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote hunter321 Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 2023 at 12:17pm
Should I sell this one
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DrAllis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 2023 at 6:06pm
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 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote hunter321 Quote  Post ReplyReply Direct Link To This Post Posted: 12 May 2023 at 8:04am
The old sleeve Is destroyed
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 12 May 2023 at 8:07am
Whatever is left of it still has to be removed so that's where your focus should be.
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hunter321 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote hunter321 Quote  Post ReplyReply Direct Link To This Post Posted: 12 May 2023 at 12:46pm
how would i pull the engine
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