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Farmall & IHC Tractors Discussion Forum
:

Prime Hyd pump on 300rc

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agpilot

08-07-2007 12:15:23




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Hello all: I just bought a 300 rowcrop with fasthitch about 2 weeks ago. I have about 3 hours of running on it. It has a loader with wf-end. I felt that the hydraulics were just too slow. But it had power to lift tractor off ground at quarter throttle but hyd seemed too slow wheather on a load or just empty... Anyway, I decided to pull the filter (located near left brake pedal)in the hyd control unit. Previous owner didn't recall ever cleaning it in his 15 years of using it... The filter screen was coated with various crud. I cleaned-replaced filter and refilled hyd fluid. It has a one gallon reserve tank located ahead of the gas tank and the filler sticks up-out of the hood panel. I put all fluid that I drained out back in and even added one third gallon to bring fluid level to within an inch of the hood panel. That fluid level is almost as high up as most all of the control unit. I left set for an hour thinking there should be fluid reaching the hyd pump. Started engine and can NOT get hyd action. So what is the safe way to prime the hyd pump? Must be air someplace? Thanks. agpilot

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georgeky

08-07-2007 20:27:47




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 Re: Prime Hyd pump on 300rc in reply to agpilot, 08-07-2007 12:15:23  
It will prime up, just be patient with it. Sometimes it helps to point the front end over a slight hill and leave the plug out of the resivoir. I had this same problem with my 450, but it finally picked up oil and works just fine now.



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Janicholson

08-07-2007 17:41:32




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 Re: Prime Hyd pump on 300rc in reply to agpilot, 08-07-2007 12:15:23  
Some 350 pumps have a small bleeder (plug) in the top of the pump casting. If yours does, go there. If it does not, I would loosen the manifold attached to the pump and let air out there. Some have put 5psi on the filler neck with a rubber stopper (no more than that) to get them primed, but We never had to. JimN



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