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Stuck Stuck Stuck

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Arron Cohen

06-02-1999 20:00:09




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My granndpa, God rest his soul, bought a John Deere D quite old. I do not no what year it is but it seems to be quite stuck. The pistons will not turn over, nor will the flywheel. Is there anyway that I could unjam them without dis assembling it completely?




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AK

06-03-1999 17:32:25




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 Re: Stuck Stuck Stuck in reply to Arron Cohen, 06-02-1999 20:00:09  
I can think of two possibilities as to why your motor is stuck. 1.The last time in use there was a definite problem that caused the motor to overheat and seize.
2. The motor has been sitting for a long period of time and the cylinder walls and piston rings have rusted and therefore stuck - piston unable to slide up and down.
Since the flywheel is attached to the same shaft as the pistons it may not have an auctual mechanical problem other than being indirectly connected. In other words your problem seems to be only with the pistons holding everything stationary.
Of the two possibilities - seized from overheating or seized from rust the more likely is rust from disuse. The motor I unstuck was a dodge engine that was used as a stationary engine to run a wood planner. If memory serves I think I removed all six spark plugs and the oil pan plug and poured lots of kerosene into each cylinder every day or so for a couple of weeks (diesel fuel would perhaps would have been better). I then tryed to turn it over by hand, however without luck. Somebody then suggested taking off the head and using a piece of soft cedar, only slightly smaller than the cylinders put on top of each piston and tap lighty with hammer.(Cedar had to fit flat across the top of the piston - be careful not to crack the piston) I gradually got the pistons loosened and added motor oil and was able to rotate the motor until it was freed. I recommend however and hope that you can get better advice than just my one experience in freeing old motors. Good luck AK

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