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Re: Re: Re: Re: hydraulic pump

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frank

12-10-2001 15:27:07




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Brian thanks for your help. i forgot to tell you that someone had the pressure and return lines switched. i put them where they belong and things started to work. when the tractor is warm things start to work and then they stop,then they work again after a while but not easy. i appreciate your help. thanks




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Brian

12-11-2001 12:19:01




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 Re: Re: Re: Re: Re: hydraulic pump in reply to frank, 12-10-2001 15:27:07  
Ok Frank, Getting a better picture now. Your loader is worked from a separate valve which has a flow and return from the tractor. To get the tractor to work this system:
1. The little Draft/Position control lever must be set in Draft.
2. The lift arms must be lowered and held down about 1".
3. The lift arm control must be up to the top stop.
This will cause oil to flow from the pump into the loader valve and should sort your problem.

If the lift arms get to the top of their travel they actuate a hydraulic cut off valve in the lift and switching off the oil flow.

Hope this sorts it

Brian

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Bill S.

12-10-2001 17:24:33




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 Re: Re: Re: Re: Re: hydraulic pump in reply to frank, 12-10-2001 15:27:07  
Whereas you are operating a front end loader from the internal pump. Are you sure the oil level is adequate to keep oil above the suction as some volume is consumed/trapped in the lift cylinders as the loader is lifted. If that is good then I would suspect the oil is not proper and is getting too much foam. Proper hydraulic/diff fluid has antifoam additives. My front end loader operates from a dedicated pump on the front driven from the front pulley hub by a shaft, but it is a Super Major, not a Dexta.

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