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Hydraulic pump whine

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Eddie in KY

04-18-2003 18:38:09




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Lets start at the beginning. I had water in the trans, changed the fluid 5 times now. NO water is in the trans any more but, in doing so I lost prime on the system 3 times. Each time it took about 1 to 2 minutes(at idle most of the time) it seemed for it to pick up fluid, yes I did change the filter too. Each time it lost prime i noticed the pump seemed to "rattle" with the engine idling. The loader has never worked as good as I thought it ahould, it wont pick up the front of the tractor without some effort, and the engine revved full throttle. Oh yeah, it always has the whine i mentioned, it a high pitched whine that changes with engine speed, and stops with the pto disengaged.I have checked pressure and only have approximately 1250 psi. My question is, is the pump damaged from running dry, just worn out, or is there a possibility of something else the matter ????
????? ???ANY SUGGESTIONS ?????

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Elmer

04-19-2003 06:30:59




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 Re: Hydraulic pump whine in reply to Eddie in KY, 04-18-2003 18:38:09  
Chances are your pump is wore out. With so much water and contamination it likely is. You should have around 2500 psi. I don't know why people let the tranny fluid get so bad. I have an 880 here that was nothing short of disgusting. It even destroyed the lift control valve. Transmission was ground right out of it.This guy did not seem to realize your supposed to stop and then shift gear. That rattle you have could be the idler gear between the pto shaft and pump gear. I would drop the pto housing off and check it out. Remember to remove the hydraulic light sender manifold from the belly of the pto gear box before removing it or you will be looking for one.

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Eddie in KY

04-19-2003 16:56:10




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 Re: Re: Hydraulic pump whine in reply to Elmer, 04-19-2003 06:30:59  
Elmer, do they make an overhaul kit for it or will I be buying a new one. I have decided to buy new if its not rebuildable. If new is the only way, do you have one and whats the cost shipped to 40142 in Ky.
Thanks, Eddie



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Elmer

04-19-2003 17:31:31




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 Re: Re: Re: Hydraulic pump whine in reply to Eddie in KY, 04-19-2003 16:56:10  
I'll have to make a phone call on monday to check the price. I think it is in the $400.00 range. There are no kits available.



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