Using 50/50 mixture of ATF & Acetone on stuck engines has worked for some
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Thread: Using 50/50 mixture of ATF & Acetone on stuck engines has worked for some

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    green and red man's Avatar
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    Using 50/50 mixture of ATF & Acetone on stuck engines has worked for some

    One of these days, I'm going to try the mixture myself. Today, I actually met someone who recently was able to get the motor unstuck on an Allis Chalmers tractor. Someone had removed the muffler and rain water filled some of the cylinders up. The owner said that he had just recently purchased the tractor and was able to get the engine unstuck in less than a week after allowing the 50/50 mixture to soak in the cylinders.

    First, he removed the spark plugs and used compressed air to blow out the water. Then he filled the cylinders completely full of ATF & Acetone. I'm assuming he put the spark plugs back in to keep the acetone from evaporating and from unwanted things getting in. Several days later, a helper used a prybar to apply force to the flywheel while the owner bumped the starter. Of course, the spark plugs would have to be removed again in order to allow the liquid to have a place to exit. In a short amount of time, he said that the pistons began to move. After the mixture of ATF & Acetone was removed, the plugs were replaced with new ones, new points & condensor were installed, the carb was cleaned, and fresh gas was added. The man said that the engine fired right up.

    There's an Oliver 88 and a JD 730 that I need to try the 50/50 mixture on. I'm also going to try using hydraulic pressure via a hollowed out/modified spark plug to see if that method will work.




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    56FordGuy's Avatar
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    I've freed stuck engines by letting the cylinders soak in plain ATF for a while, then using a breaker bar back and forth in small increments on the crank pulley.
    -Blake

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    green and red man's Avatar
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    Yeah, I've heard of others only using just the ATF as well. One guy said he uses diesel fuel in place of ATF when adding Acetone. There have been some rusted fasteners where I used just brake fluid and it seemed to work.

    I'm hoping to get back to work on the Model 70 and see if I can get more movement on the flywheel, otherwise, I may try hydraulic pressure or the 50/50 mixture.




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    Keeper of the GTT Cookies dieselshadow's Avatar
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    If it were me, I wouldn't go beyond the soaking method of any concoction. If it needs further attention, I'd tear it apart and make it right. But that's just me....I'm anal.
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