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3 point hitch problem 67 Ford 3000

Dean Davis I have a 1967 Ford 3000 Diesel Tractor - the 3 point hitch hydraulic lift does not work - I removed the lift cover and found that both suction and return line filter screens needed cleaning, the suction filter was really clogged with sludge. I visually inspected all accessable components and reassembled, installing new o-ring seals where indicated. The lift still doesn't work. I did a pump pressure test as prescribed by the manuel and pump pressure was above 2500 psi. Any ideas on what to check next??

harry16 The most likely culprit is a stuck unloader valve.
Harry16 If you pull the lift cover and find nothing wrong with the unloader valve, then there are other valves you can check. There's no point of yo-yoing the lift cover.

There is a check valve right beside the unloader valve that may be stuck. The draft/position control valve may not be working. Also check the lift piston seals.




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