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1951 Model B

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Carl Doby

03-30-2000 20:31:34




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I recently purchased a 51 AC, B model, from a family friend. He told me that this tractor ran two years ago. However, we can not get the hand crank to turn the motor over. This tractor also has electric start. The tractor has sat outside for 2 years with no cover over the exhaust pipe. Would this have caused it to freeze up? What should I do to break it loose?? Any help would be greatly appreciated!!! Thanks Carl

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Terry (NC)

03-31-2000 18:39:20




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 Re: 1951 Model B in reply to Carl Doby, 03-30-2000 20:31:34  
To get an idea of what you might be in for, and just for the shear enjoyment of it, read "Busted Tractors and Rusty Knuckles" and "Old Tractors and the Men Who Love Them" by Roger Welsch. You should be able to find them at your local bookstore. You won't regret it.



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Phil Auten

03-31-2000 05:10:56




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 Re: 1951 Model B in reply to Carl Doby, 03-30-2000 20:31:34  
Carl,
Before you get too far with this, unbolt the starter from the engine and see if it turns. I helped a friend with a "stuck" tractor and we couldn't get it to break loose. He removed the starter and found that it wasn't really stuck after all, the starter had hung on the flywheel and wouldn't allow the engine to turn. I've heard of this several times before and after this one.
The point is to eliminate the simple things first.
However, I suspect that your B is rusted stuck either with valves or piston(s). Draining the oil will tell you if water has found it's way into the crankcase past the pistons. If you get a lot of water, you'll probably have to tear it down.

Phil

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Dick L

03-31-2000 05:00:52




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 Re: 1951 Model B in reply to Carl Doby, 03-30-2000 20:31:34  

Any engine that has been in runnng conditon, that is with valve train intact, will always have exaust valves open on some of the cylinders. With the exaust not being covered out side, rain will get into the exaust, down through the open valves and onto the pistons and rust the cylinder walls, also seep around the rings and rust the rings fast to the cylinder walls. The rain water will build up on the closed valves and rust the valve stems fast to the valve guides. If enough water builds up and it gets well below freezing the head can crack. If the tractor had enough blow by and and all the inside parts are coated with burned oil and enough space to let the water flow into the pan, the rusting process will take longer and after two years you might get the tractor to run with out disassembleing it.
The above reasons are why I always tear down a stuck engine. With an overhaul gasket set and all needed parts on hand, and no major damage, and the proper tools, you can have the little B down and back togather in a long day. It's all in what you want when you done.

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Frank Morreale

03-30-2000 21:04:26




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 Re: 1951 Model B in reply to Carl Doby, 03-30-2000 20:31:34  
Pour a couple of tablespoons of Kroil oil in each cyclinder, leave the plugs out and everyday rock the tractor in gear. In a few weeks it will start to turn.
Frank



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