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Question on old hyd cylinders and new equipment

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DAN9-Midwest

03-23-2008 07:19:49




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My neighbor has an older dump wagon for sale that I have an interest in buying. It is a typical 1950-'60s running gear with a dump cylinder and lines to hook up to a hyd outlet on tractor.

I read somwhere that the older cylinders might be of a lower psi capability and that newer tractors might damage them with their higher pump pressures. Anyone know if this is true?

He use to put 150 bu of corn/beans in it, maybe more

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buickanddeere

03-23-2008 11:18:09




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 Re: Question on old hyd cylinders and new equipment in reply to DAN9-Midwest, 03-23-2008 07:19:49  
I don't know why anybody would try to make do with a set of old lower pressure hoes and rams? Sooner or later somethings going to burst and the load will come down with a smash. Something is definitly going to get wrecked that costs more than a set of hoses and a ram. Odds are somebody is going to hurt or killed due to the hydraulic failure. The new ram will have to be of a smaller dia than the old lower pressure unit. Or the wagon linkage risks getting twisted apart with the extra force.

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teddy52food

03-23-2008 07:55:09




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 Re: Question on old hyd cylinders and new equipment in reply to DAN9-Midwest, 03-23-2008 07:19:49  
If you don't overload the wagon, it will lift before it will hurt the cylinder. Use common sense!



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glennster

03-23-2008 07:52:10




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 Re: Question on old hyd cylinders and new equipment in reply to DAN9-Midwest, 03-23-2008 07:19:49  
i have a couple old wagons, david bradleys with cylinders on em. pretty sure they were only rated for around 800-100psi, about what a belly pump could generate at max. mine are all one way cylinders. i use em for hauling dirt and gravel around, pretty handy for road repairs. you can put a releif valve in the line and set it around 900-1000psi to be on the safe side. that way, you have less risk of poping the cylinder....and tearing up the running gear if you overload it.

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Gerald J.

03-23-2008 07:50:21




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 Re: Question on old hyd cylinders and new equipment in reply to DAN9-Midwest, 03-23-2008 07:19:49  
Most 2 cylinder JD ran only 1200 psi, new generation and later run 2250 psi. Splits old cylinders. AC from at least the WD model ran closer to 3200 psi, breaks nearly all cylinders.

Most wagon dump cylinders are common sizes and easily replaced.

Gerald J.



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jd-tom

03-23-2008 08:14:00




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 Re: Question on old hyd cylinders and new equipment in reply to Gerald J., 03-23-2008 07:50:21  
In an wagon hoist situation like this, most of the time you can get by with the high pressure tractor/low pressure cylinder combination if you just use some common sense. DON'T let the cylinder get to the end of it's stroke under pressure - that's when you blow cylinders and lines. It's not so much the high pressure but the sudden stop at the end that causes problems. Just feather it to the end (if you even need to raise it that high) and you should be OK. With a 2-way cylinder on an implement, though, that is a different story - pretty tough to remember to feather the cylinder every time you raise and lower the implement. Better get the right cylinder for the job in that situation - not worth ruining a hard-to-find vintage cylinder. High-pressure tie-rod cylinders are as common as dirt and usually pretty cheap too, especially compared to the cost of fixing a vintage cylinder after you blow it up!

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