3-Point Hitch hydraulics

[Donovan Caro]

I have a MF 283 and the hydraulics or not working any suggestions would be appreciated 3pt or the remotes.

Thanks,

 

[Donovan Caro]

I took out the hydraulic filter and ran diesel in the hydraulic unit and my three point is working not holding but working up and down is there a air bleed on this unit?

 

[MFRED]

The air should work itself out after a few cycles. If the 3pt is going up and down it sounds like the pump is working alright, a pressure test or even weight on the hitch would confirm. If it's not holding position, the lift cylinder rings could be a problem.

 

[Donovan Caro]

It can't hold any weight it want pick up with weight on it

 

[Donovan Caro]

I took the cover off put air in the cylinder no leakage it lifted me strait up any other idea?

Thanks

 

[J_J]

Try not raising the lever all the way up. Does the 3pt move at all, no matter where the lever is positioned?

Put a hyd gage in the system.

 

[Donovan Caro]

It will come up not on the bottom half when you get to the top half it does very slow moving. it can't hold a load not even 200 pounds and when the tractor is turned off the three point goes strait down. The remotes seam to be working great

 

[J_J]

What does the pressure gage indicate when you use the 3pt? If you have good pressure, then the valve is faulty, perhaps the relief , or the piston seals are bad.

With a good pump, and valve, the pressure is determined by the load on the 3pt, and with enough load, the 3pt valve will relieve, and then you will know your relief pressure.

Did you say that you had no pressure to the remotes? Have you checked pump pressure yet?

If an upstream valve is leaking fluid, or the upstream valve is stuck, it will not pass enough fluid for the 3pt to work.

If your pump is good and working, then the hyd fluid is going somewhere. If all valves are in neutral, the fluid flows through all valves to the reservoir.

If the 3pt is starved for fluid, it won't work, if the 3pt valve is faulty, it may by-pass the fluid to the reservoir. or the pump is bad and can not develop pressure, or the 3pt piston seals are about gone.

When you put air to the 3pt cyl, did it hold air, or leak down rapidly.