Because most tractor functions rely on the hydraulic system to power them, including the 3 point hitch, hydraulic filter and fluid maintenance has an important effect on every tractor’s operation. If the three point hitch will not stay up or leaks down on its own, try to lift the three point arm links all the way up and close the selective 3 point speed control valve, which is usually located under the tractor operator seat (between the operator knees). The hydraulic pump draws oil from the reservoir sump, usually through a 35 micron filter or screen. Powder coated John Deere green. Top Rated Seller Top Rated Seller. The first step is to determine if the overall hydraulic system is operating properly. When a three point hitch will not go down, the most frequent cause is the hydraulic flow speed control valve, usually located between your knees under the seat, is closed with the knob closed all the way to its stop. You have been signed out due to inactivity. Specifically, the key elements to diagnose are i) is the hydraulic fluid reservoir full with the proper hydraulic oil (including type and viscosity); ii) have the filters been changed and the tank in-line strainers been thoroughly cleaned; and iii) are all the hydraulic fittings, connections, caps and vents tight so that so that air is not causing the pump to cavitate. removal and overhaul of the pump is not difficult and requires a pump seal kit. Rate of drop valve closed. If the valve is open, check that all of the linkage between the valve and the handle are attached and move freely. This control valve is connected by linkage) to the 3-point lift control lever and lift arm, which opens and closes the control valves allowing hydraulic oil pressure to flow in and flow out, depending on the position of the control lever. One of the most common tractor repair questions that customers ask us is what is wrong and how to fix a tractor three point hitch. Moving the lift control lever forward will allow the control valve to release oil out of the lift cylinder and lower the lift arms, and pulling the lever backwards flows hydraulic oil, under pressure, into the cylinder to raise the lift arms. If so, the speed control valve will need to be completely removed to check to see if the three point goes down after removal. FOR JOHN DEERE 3 THREE POINT HITCH 318 322 330 332 420 430 CAT 0 Manufactured. The reason many quick hitch systems aren’t cross compatible is due to the spacing of the 3 point pins on the implements vs the spacing on the quick hitch system. If you get a stream of oil shooting out of where the lockout valve was installed and the three point goes down, then you have a blockage somewhere in the hydraulic valve system. Plugged air intake filter. By closing the speed control valve all of the way, you will have eliminated the valve itself and all of the parts of the system before this valve in the hydraulic circuit. Explore 15 listings for John deere a 3 point hitch at best prices. Top Rated Seller Top Rated Seller. For Tractor Parts or Service online, visit www.TeamTractor.com or give us a call anytime at 602-734-9944. Debris may have become plugged one or more of the hydraulic flow ports or fittings in the system. I cranked up the tractor and the lift is not working. I would almost say for sure that is the problem. Buy It Now. From United States. Used JOHN DEERE 630 For Sale In Poseyville, Indiana. Compatible with the John Deere CAT 1 iMatch quick hitch or any CAT 1 3-point tractor hitch. 3-point Hitch Fails To Lift Low oil level. Just for a point of reference, the hydraulic fluid is NEW and filled to the proper level, filter was just changed as well. If all of these check out, then there is most likely a mechanical part failure inside the 3 point housing, and will require disassembly of the tractor rear end (see next section), Tractor Three Point Won't Stay Up or Leaks Down on its own. 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