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Vintage Diesel and Oil Engines Fairbanks Morse, Lister, Petter, Witte and other pump injected Diesel oil engines.

Vintage Diesel and Oil Engines

Fairbanks Morse 25 Hp YH


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  #11  
Old 09-08-2017, 11:09:26 PM
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Dwayne Fuller Dwayne Fuller is offline
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Default Re: Fairbanks Morse 25 Hp YH

Those are some great photos. Thanks for posting. There is no obsticale to large to overcome when rescuing old engines.
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Old 09-08-2017, 11:55:51 PM
Nathan K. Nathan K. is offline
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Default Re: Fairbanks Morse 25 Hp YH

Great photos and captains chair in the boat!. I have a 25hp Yh style B engine(that I can't find parts for) so I can appreciate how big and heavy those parts are, my engine gets moved with an excavator!.
Nathan.
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  #13  
Old 09-09-2017, 03:30:07 PM
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Default Re: Fairbanks Morse 25 Hp YH

Originally as found the piston was a couple of inches below the cylinder. I attached a air line and filled the area above the piston with oil for a few days then headed the cylinder with a tiger torch. the piston moved about six inch"s and then stuck
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  #14  
Old 09-09-2017, 03:31:38 PM
cherob cherob is offline
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Default Re: Fairbanks Morse 25 Hp YH

sorry about the airplane picture it should not be here!
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  #15  
Old 09-09-2017, 10:34:32 PM
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Dwayne Fuller Dwayne Fuller is offline
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Default Re: Fairbanks Morse 25 Hp YH

Uh, no worries on the airplane pic, we want to see more.
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  #16  
Old 09-09-2017, 10:41:35 PM
56Townsman 56Townsman is offline
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Default Re: Fairbanks Morse 25 Hp YH

Now that you've become adept at posting photos of engines and planes, you need to figure out how to post links to videos - so that in a few months we can watch this engine come back to life!
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  #17  
Old 09-10-2017, 01:09:20 AM
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Default Re: Fairbanks Morse 25 Hp YH

Did the piston perhaps stop moving because the exhaust port become uncovered?

If so, it seems to me that you may need to pull the head and drive the piston out. A 4 X 4 and 10 lb hammer worked on my 10 HP YH. Maybe and 1/16" or 1/8" at a time, but all engines are different.

Or, pull it out if you can make those arrangements easier.

The good news is that you got the piston to move, that's usually 90% of the challenge for getting any stuck or frozen part free.

Cheers,
Chuck

Last edited by Chuck Moss; 09-10-2017 at 01:11:53 AM. Reason: typo
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  #18  
Old 09-10-2017, 11:06:13 AM
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Default Re: Fairbanks Morse 25 Hp YH

The oil did run out once the piston passed the exhaust port. A six ton jack would not move it so after removing the rust from the cylinder with a flap wheel and soaking for two months with penetrant I made a homemade press to push it towards the head end
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Old 09-10-2017, 11:10:57 AM
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Default Re: Fairbanks Morse 25 Hp YH

The piston moved with about ten tons of pressure.. As it got closer to the head end it moved easier until it dropped the last two inch's
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  #20  
Old 09-10-2017, 11:15:20 AM
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Default Re: Fairbanks Morse 25 Hp YH

And the final pictures for now with the piston out and the rings removed
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