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Tractor Talk Discussion Forum

Hydraulic Cylinder Disassembly

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doorman

03-20-2007 19:59:59




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I have to rebuild the bucket "curl" cylinder on my loader. I have the gland nut loose, but the piston will not come out past what I think is a buildup on the bore from sitting for ten + years. If I force the piston to come past this spot will I hurt anything besides the o-rings and seals? Thanks in advance, doorman




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glennster

03-21-2007 06:11:54




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 Re: Hydraulic Cylinder Disassembly in reply to doorman, 03-20-2007 19:59:59  
i have an american road loader on my m. when i rebuilt my cylinders, i could not get em apart either, loosend the gland nut, wouldnt come apart. turns out the pipe fitting near the end of the cylinder where one hydraulic line went held a collar in that kept the cylinder from coming apart. removed the fitting, came right apart. spend half a day monkeying around with it for i figgured it out. dont know if your cylinder is set up that way or not, but worth a try.

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flying belgian

03-21-2007 05:46:16




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 Re: Hydraulic Cylinder Disassembly in reply to doorman, 03-20-2007 19:59:59  
sometimes snapring groove gets flared out from years of piston bumping against it. You can push cylinder back together slightly and reach in with finger and emery cloth and smooth it out.



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Donaldinky

03-20-2007 22:07:35




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 Re: Hydraulic Cylinder Disassembly in reply to doorman, 03-20-2007 19:59:59  
Lay it on the ground and put some air into the cylinder it will shot out the end like a bullet be care full.. bring the pressure up slowly



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Roy Suomi

03-20-2007 20:27:05




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 Re: Hydraulic Cylinder Disassembly in reply to doorman, 03-20-2007 19:59:59  
Is the gland nut you're referring to a thin nut with a couple of notches in it ?? or is it a larger casting , machined to thread into the cylinder barrel ?? If it's the first one mentioned , loosen and unscrew the nut from the gland . Inside you will tap on the gland so it goes past the snapring groove..Dig out the snapring and remove the gland along with the cylinder rod and piston..If it's the second style , I've used a chain come-a-long and a couple of trees to pull the cylinder apart..Please use a protector on the trees so you don't debark them with a chain...

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