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JD air pump

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Larry24d

04-16-2000 05:27:04




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Was at a farm sale yesterday and bought a pto driven air pump. I'm curious as to how well they work, how much pressure do they build and how long does it normally take to air up a tire? What do they generally sell for at a sale? I put in on my tractor when I got home and it seems to work like a champ...really a neat little gadget!! Thanks.




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Big Buck

04-16-2000 21:08:23




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 Re: JD air pump in reply to Larry24d, 04-16-2000 05:27:04  
I have one myself. I air up balloons for the kids at tractor shows. What chain and spring are you talking about, mine has neither. Also, do you know what the bolt on the bottom is for? Does it adjust the output pressure? Thanks for the help.



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Stan

04-17-2000 03:38:18




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 Re: Re: JD air pump in reply to Big Buck, 04-16-2000 21:08:23  
The chain and spring fasten onto the bolt on the bottom. The chain then wraps around the axle (or the drawbar) to keep the pump from flopping all around the place when running, and the spring is used to keep tension on the chain - at least that's the way it worked on a '41 B 50 years ago. Maybe they made some changes later and eliminated the chain?

Stan



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Larry24d

04-17-2000 03:54:54




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 Re: Re: Re: JD air pump in reply to Stan, 04-17-2000 03:38:18  
mine has the chains, one for each side, and the spring to...hey, I aired up a 7.50X16 tire...didn't take that long and seemed like it brought it right up to pretty high pressure...its a neat little gadget....



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Stan

04-16-2000 09:55:44




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 Re: JD air pump in reply to Larry24d, 04-16-2000 05:27:04  
They work reasonably well. We never had a tire gauge, so I don't know how much pressure. It took a long time to pump up a tire. You need to make sure the chain and spring are tight, or it will beat itself to death against the drawbar.

Got one in my shop that I rescued out of Dad's old barn a few years ago.

Stan



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