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Tractor Talk Discussion Forum

Stuck Pistons??

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daniel gillespi

09-19-2004 06:11:54




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I was wondering if you had stuck pistons could you fill the cylinder with oil or PB Blaster. Then gut a old sparkplug and attach a air line to the sprk plug somehow(weld,fittings something)that would fill the cylinder with air forcing the piston down while turning the crank with a wrench. I have done it but was just thinking into space and an idear came to me.




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mud

09-19-2004 12:52:48




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 Re: Stuck Pistons?? in reply to daniel gillespie, 09-19-2004 06:11:54  
might sound crazy but my friend loosened up a stuck block by running a loop from the radiator and heating the water with a propane cooker. he poured hydraulic fluid into the cylinders and heated her on up. it took several tries but worked very well.



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caseman-d

09-19-2004 09:14:08




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 Re: Stuck Pistons?? in reply to daniel gillespie, 09-19-2004 06:11:54  
Lot will depend if your valves are open or closed. I have read where people have used grease. Think it will also depend on how many pistons are stuck.
caseman-d



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RAB

09-19-2004 10:45:11




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 Re: Stuck Pistons?? in reply to caseman-d, 09-19-2004 09:14:08  
The valves can easily be closed.
Hydraulic pressure should be much better if it can be used (on half the number of pistons?) as higher forces can be applied and you don"t need the crank to move more than a few thou, before loosening the rest in a controlled to-and-fro action. It is usually the cylinders where the exhaust valves are open which are worst and these probably need to be driven down initially if possible (backwards), assuming most of the rust will be above the crown(s).
If it was stuck that bad I would remove the head anyway. Just my 2p worth.
Regards, RAB

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