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Allis Chalmers CA Stuck Engine Freeing Approach
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dfwallis View Drop Down
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Joined: 09 Mar 2023
Location: DFW
Points: 892 		Post Options Post Options   Thanks (0) Thanks(0)   Quote dfwallis Quote  Post ReplyReply Direct Link To This Post Topic: Allis Chalmers CA Stuck Engine Freeing Approach
    Posted: 06 Apr 2023 at 5:04pm
The following attachment summarizes my recent few weeks of observing various rust reformer, rust penetrant, and lubricant products performance relative to approaches for freeing a stuck Allis Chalmers CA engine.  Presently it is being soaked in ATF/Acetone without apparent success.  If that continues, when I'm able to travel in May to work on it, my approach will be guided by the content of the attachment.  If that fails, then we will of course begin disassembling the head.


uploads/23713/RustRemoverAndPenetrantsTest_2023-04-07_20-36-43.pdf


Edited by dfwallis - 07 Apr 2023 at 8:37pm
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
Location: illinois
Points: 88676 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 06 Apr 2023 at 5:29pm
I think the success of  SOAKING depends on how STUCK it is.. If its lightly stuck, then some penetrant can looses things up enough to roll the engine over, and get the rings loose in the piston........... If you have pits on the walls, or excess rust showing.. and rings rusted to the liner for years, then NO WAY..

So if it has been setting a year or two, MAYBE.... if it has been outside in the weather with no rain cap on it for 5-10 years , you might as well overhaul.


Edited by steve(ill) - 06 Apr 2023 at 5:30pm
Like them all, but love the "B"s.
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dfwallis View Drop Down
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Points: 892 		Post Options Post Options   Thanks (0) Thanks(0)   Quote dfwallis Quote  Post ReplyReply Direct Link To This Post Posted: 06 Apr 2023 at 5:31pm
I'm certain it will need and have planned for an overhaul, but first I'd like to try to free it up.  Takes very little effort.
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
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Points: 88676 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 06 Apr 2023 at 5:39pm
YES...  i have done that twice and did break one loose.... burned oil bad after that and did get a rebuild shortly there after .... Other one was beyond hope... Even had to beat OUT the liners and pistons ...  froze inside the bore.

Edited by steve(ill) - 06 Apr 2023 at 5:40pm
Like them all, but love the "B"s.
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