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Need help hydrolics on a wd

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12-16-2002 14:27:14

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we just put a 3 point hitch on a 1950 wd the trouble is the lift will go up and down fine with no weight on it, put the boom pole on and 300 llb it goes up and down fine, 400 lb it acts like you turned the pump off, when it starts to lift you can here the pump purrin, when it stops lifting nothing. is there a bypass, or regelater valve to solve this, with 2 people on the bale carrier it will go up if the third person steps on it will stop , if the third gets back off it will go on up, it is full of oil, thanks for any help

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Duey (IA)

12-16-2002 18:33:39

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 Re: need help hydrolics on a wd in reply to pcy, 12-16-2002 14:27:14  
When the pump "unloads" and sounds like it shuts off, it has reached a preset pressure. This can be adjusted internally in the pump, with shims. Max pressure on my WD is 5500 pounds. Rick is correct about checking the pressure and condition of your pump. Duey

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Rick H.ks.

12-16-2002 15:41:57

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 Re: need help hydrolics on a wd in reply to pcy, 12-16-2002 14:27:14  
cut my first tooth on a 51 it would lift the front wheels off the ground if you had it in low and let out the foot clutch while lifting a heavy load of silage on an old lister frame. there is a hi pressure relief valve that lets the lift bypass when fully lifted or you raise too heavy a load. You need to find a Fiat-Allis shop with a presure gauge and a mechanic who knows how to adjust it. I think that pump puts out 3500 ftlbs but is low volume. If the arms jerk as they raise you could have a broken spring or two in the pump but I dont think that will affect the presure.

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12-18-2002 15:33:44

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 Re: Re: need help hydrolics on a wd in reply to Rick H.ks., 12-16-2002 15:41:57  
it was a valve, had a spring broke, i put a set of ih 666 lift arms , lift pieces off a 3600 ford , i moved about 10 850 lb round bales with it today, hyd, are a little slow, but i really like using the old girl, on a twp gravel road with a 850 lb bale a pretty long hill right up it in road gear, with one 75 lb ih wt on the front , gasser up and it will lift the front wheels about a foot, fun to play with,

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Rick H. Ks.

12-23-2002 08:54:16

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 Re: Re: Re: need help hydrolics on a wd in reply to pcy, 12-18-2002 15:33:44  
Have fun but b careful. Lots of power to weight ratio and have been told of guys flipping over by chaining to tractor at axel or lift arm cross bar. also if you pick up a AC mounted plow she'll pull 3/14s in most conditions walking the dog. B sure to attach plow to lift arms with pop open snap adapters. early plows bolted tight and when the 3rd point under the belly came loose or broke the plow would jab in the dirt and come up into the seat with you. Lost a few good ole boys that way. Would love to have one of my own just to play with, and may someday, but for now my brother has Dads 51 and lets me do his chores with it. :-)

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