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Case Tractors Discussion Forum

freeing a froze engine

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02-28-2008 20:55:23

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i was going to see what would be the best way to free a seizes engine it is another project tractor i plan on starting when i get it unstuck.
jerry s

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jerry s

02-29-2008 20:12:57

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 Re: freeing a froze engine in reply to jerrys, 02-28-2008 20:55:23  
i will give them a try the tractor hasnt ran in some time.it was my grandpas and i wanted to get her running i took the head off and going to put new valves in it with other new things as well i built a rod to use on the hand crank but where i can use a impact wrench on it on time but would love to have more ideas as well

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Den N Ms

02-29-2008 19:43:40

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 Re: freeing a froze engine in reply to jerrys, 02-28-2008 20:55:23  
jerrys,I have found that PB Blaster works the best and fastest by testing it with Marvel Mystery Oil ATF,and Diesel.If its is still really stuck,pull the valve cover and rocker shaft off,if its over head valve.Check the valves and make sure their not stuck.Find a piston that is up in the cylinder and the valves on that cylinder that are closed or are free.get you a fitting or knock the porcellen out of a old spark plug braze a 1/8 female pipe coupling or a old fitting to the plug.screw in a grease fitting to the old plug.Put the plug in the head in that cylinder and take your grease gun and hook it on and start pumping grease in that cylinder.Keep pumping grease in and it will move the crankshaft,the hydrolic pressure will free it up

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C. Amick

02-29-2008 18:46:42

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 Re: freeing a froze engine in reply to jerrys, 02-28-2008 20:55:23  
There used to be some good articles on freeing stuck engines under "Articles" on this web site. I don't know if they are still there. One guy mixed 1-part kerosene, 1-part automatic transmission fluid, and one part Marvel Mystery Oil to soak his engine loose. Check the valves to make sure they are free before you try turning the engine over or else you will bend some push rods. Most people recommend leaving the head on to prevent the sleeves from pushing out when you try turning the engine.

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Kevin in Iowa

02-29-2008 04:56:07

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 Re: freeing a froze engine in reply to jerrys, 02-28-2008 20:55:23  
I have filled the cylinders with diesel fuel and let it soak. That should free up the pistons.

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