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The 3 point lift and front end loader on that tractor should have two separate hydraulic systems, so the two issues should not be related. The front end loader should be powered by a pump that is mounted on the front of the tractor down below the grill that is powered via a shaft from the crankshaft pulley, and the reservoir should be inside the loader frame. The 3 point hydraulic pump should either be, depending on which transmission and PTO options it has, on the left side of the tractor as you're sitting on the seat at the rear of the engine near the flywheel, or inside the right side of the rear axle center housing, and the reservoir for the 3 point hydraulics is the sump of the rear axle itself.
The 3 point problem sounds like a stuck unloader valve, which is under the 3 point hydraulics top cover. The top cover is the large piece of cast steel that the seat bolts to and that also has the upper lift arms and 3 point control quadrant coming out of it. You are going to need to pull the top conver and remove the unloader valve and clean it with some extra fine emory cloth to get it unstuck. While you have the top cover off I would recommend doing a full R&R of all of the o-rings and seals iunder there as well as making all of the recommended control linkage adjustments that are in the service manual. If you do not have one, get yourself a Service Manual. You can eiter get an original Ford Service Manual or an I&T after market service manual. The I&T FO-31 manual covers the 3 cylinder 2000/3000/4000 series ag chassis models, but the 3 point hydraulics on your 4400 are the same as on the ag chassis 4000 model so it will cover what you need to do.
Which fluid and filter did you change when you said that the loader issue was better after you changed them? If they were in the rear axle under the top cover then that shouldn't have affected the loader at all. If it was the fluid in the frame of the loader and the filter inside the loader frame up on top of the bottom plate below the left upright of the loader frame then those were the correct fluid and filter changes. If it is still jerky after that then I would guess that either there is still gunk inside there that might be clogging tjhings up, or there are some internal seals or o-rings that are bad either inside of the cylinders or inside the control valve.
Thank you for the quick reply. The fluid level was low so I filled up the rear axle, transmission and power steering with Super S Super Trac Hydraulic transmission fluid. They were all very low.
1-The power steering right side worked as it supposed to as it was hard to turn before this. That part is fixed now.
2-The bucket worked better after warming up but still has some jerking. I didn't do anything with the filter on the bucket side as I didn't know it had one. So I will look into this and maybe drain and refill and see what comes out.
3-The 3 pt. after filling it up the first time did the same lift goes up automatically even if the lever and draft is in the down position. I then drained the rear axle fluid, lots of sludge came out as well as a
metal ring but only have of it. Not sure if this was always in there are maybe something new. I refilled with VP racing UltraJ20A Plus Utility tractor fluid since the other fluid wasnt in stock anymore, hoping that this would fix it. Nothing new happened. It takes about 6 weeks when under a load (box gannon attached) before the lift arms come all the way down so I can remove the Box Gannon. The metal ring looks like maybe some kind of snap ring but not sure where it may have come off of. Added photos of this metal ring and size. Would you have an idea where I need to look to see if this was a broken part of just something that was in the axle and never removed before?
Would I be able to lift the cover under the seat if the arms are not all the way down?
Once i Have the 3 pt fixed I will work on the bucket area and check the filter. Can the filter be cleaned or does it need replaced?
Thank you for all your information. The other 2 forums I posted a week ago I recieved only one reply saying control valve is binding perhaps from corrosion. That wasn't much help. Your information is so much more information and guidance. Thank you again
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