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John Deere 4640 brand quick fold 80 pt sprayer hydraulic pump issues
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Jangus
Posted 5/24/2025 18:29 (#11236909)
Subject: John Deere 4640 brand quick fold 80 pt sprayer hydraulic pump issues


Usually get custom sprayer these last ten years or so but he’s down this spring and getting late so got brand sprayer from neighbour with a bad pto pump, plumbed in a hypro 1303c HM1C hydraulic pump for the life of me can’t get it to pressure up like it should only about 25 boom psi. Also hydro hose and scv on tractor seem pretty hot after about 35 mins of trying to get it to pressure up the scv is 145 degrees any help would be greatly appreciated thank you.



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