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    Ford 4000. Slow 3 point hitch lifting

    Thanks again for all the help. I have now completed the following jobs: rebuilt the flow control valve, i think the spool was stuck, cleaned the sump filter in Situ using some diesel and compressed air, and replaced the relief valve on the hydraulic pump. While I had the hydraulic fluid drained...
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    Ford 4000. Slow 3 point hitch lifting

    That sounds a great idea. Do I use ONLY diesel or mix it with tractor fluid? Thanks.
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    Ford 4000. Slow 3 point hitch lifting

    Thanks Wackyrig and Sean. You've confirmed my thoughts - the screen will not come out unless you split the tractor and remove the PTO shaft. Crazy. I also considered bending the bracket but was worried about it snapping. I did what you advised and cleaned the top part of the screen with diesel...
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    Ford 4000. Slow 3 point hitch lifting

    Thanks for all replies so far. I have decided to try cleaning the hydraulic filters and change the relief valve at the base of the hydraulic pump (gear driven). So far I have removed the flow control valve and the hydraulic pump. I've freed the suction pipe from it's casing mount but cannot get...
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    Ford 4000. Slow 3 point hitch lifting

    I'm using a 0-5000 PSI pressure gauge connected directly to the remote control outlet plug. This used to feed my front loader but is now capped off. So I removed the cap and used an adapter to connect to the pressure gauge. Pushed the remote control knob fully in to start with. Started tractor...
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    Ford 4000. Slow 3 point hitch lifting

    Thanks for the response. I think I have a plan now...fully drain fluid, remove lift cover (again!), replace all O rings (again!) But then clean the suction filter and replace the paper element on the return filter, replace the relief valve on bottom of pump and remove and inspect the flow...
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    Ford 4000. Slow 3 point hitch lifting

    Thanks Sean. I have tried fiddling with the flow control knob but it appears to make little difference. Thanks for the response.
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    Ford 4000. Slow 3 point hitch lifting

    Hi, I have a 1969 Ford 4000 3 cylinder diesel, UK build. The pump is in the rear axle housing under the lift cover. Recently I was successfully using a topper (bush hog) on the 3 point linkage. Fairly suddenly, the tractor's hydraulics started lifting really slowly - but they did lift and hold...
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