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D12 rebuild
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
Location: illinois
Points: 77700 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Topic: D12 rebuild
    Posted: 12 May 2023 at 3:45pm
This is a CASE 530 under an 8 ft awning... I disconnect the front axle / tires/ etc and rolled forward a foot toward the bucket.. Pulled the motor and dropped it out the bottom.. just plenty or cribbing under the loader frame and  transmission area.
Like them all, but love the "B"s.
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
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Points: 77700 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 12 May 2023 at 3:37pm
normally you roll the motor forward with the tires... I did a Backhoe tractor a few years ago... Transmission , rear end, tires, backhoe dont move. Block that solid..... I set  bucket on the ground and blocked under the loader frame so it was stationary.. removed the radiator and everything around it... pulled the motor forward 3 inches and lifted out of the loader frame... but you would need a lift of some sort ..... have also seen pull the motor forward and drop to the ground and drag out from under the loader frame.. if you have room.
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hunter321 View Drop Down
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Joined: 11 Jan 2021
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Points: 366 		Post Options Post Options   Thanks (0) Thanks(0)   Quote hunter321 Quote  Post ReplyReply Direct Link To This Post Posted: 12 May 2023 at 1:46pm
stupid thing to ask but i would have to remove the bucket and loader and cement front weight before attempting to pull the engine.
if i took the backhoe part of if i could i dont think i could ever get it back on


Edited by hunter321 - 12 May 2023 at 2:02pm
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
Location: illinois
Points: 77700 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 12 May 2023 at 12:55pm
this is a good example...
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hunter321 View Drop Down
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Joined: 11 Jan 2021
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Points: 366 		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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SteveM C/IL View Drop Down
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Joined: 12 Sep 2009
Location: Shelbyville IL
Points: 7980 		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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Joined: 11 Jan 2021
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Points: 366 		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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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 19501 		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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Joined: 11 Jan 2021
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Points: 366 		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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hunter321 View Drop Down
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Joined: 11 Jan 2021
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Points: 366 		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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Joined: 11 Jan 2021
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Points: 366 		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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Joined: 11 Jan 2021
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Points: 366 		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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SteveM C/IL View Drop Down
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Joined: 12 Sep 2009
Location: Shelbyville IL
Points: 7980 		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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Joined: 11 Jan 2021
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Points: 366 		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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steve(ill) View Drop Down
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Joined: 11 Sep 2009
Location: illinois
Points: 77700 		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.
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hunter321 View Drop Down
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Joined: 11 Jan 2021
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Points: 366 		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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WF owner View Drop Down
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Joined: 12 May 2013
Location: Bombay NY
Points: 4388 		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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Joined: 11 Jan 2021
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Points: 366 		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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steve(ill) View Drop Down
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Joined: 11 Sep 2009
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Points: 77700 		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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Joined: 11 Jan 2021
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Points: 366 		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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WF owner View Drop Down
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Joined: 12 May 2013
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Points: 4388 		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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Joined: 11 Jan 2021
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Points: 366 		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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hunter321 View Drop Down
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Joined: 11 Jan 2021
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Points: 366 		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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steve(ill) View Drop Down
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Joined: 11 Sep 2009
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Points: 77700 		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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steve(ill) View Drop Down
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Joined: 11 Sep 2009
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Points: 77700 		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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hunter321 View Drop Down
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Points: 366 		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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HudCo View Drop Down
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Joined: 29 Jan 2013
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Points: 3275 		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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Points: 366 		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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hunter321 View Drop Down
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The sleeves are wet sleves
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hunter321 View Drop Down
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Points: 366 		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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