MF 135 controls

For auxiliary hydraulics to work, the front part of the PTO shaft has to be turning, so the double clutch bottom part has to be engaged, transmission gears don't matter, and the lift lever on the quadrant has to be in the constant pumping position and the draft lever all the way up. The ground/neutral/engine shifter on the left under the seat doesn't matter to the hydraulics either. But if in the engine position, the pump isn't running unless the external PTO shaft is turning.

There are three ways to run the three point, and any of them can turn off the auxiliary hydraulics.

Auxiliary hydraulics isn't covered in the owner's manual and I don't find that the triple valve is covered in the manual on auxiliary hydraulics. That manual is MF number 690 562 M3. Titled: "Operator's Manual. Basic & Auxiliary Hydraulic systems for MF 130 through MF 180 Tractors"

Gerald J.

That manual I have is odd. There's no discussion of the valve I have, but the only parts page is the valve I have.

Gerald J.

I don't remember any adjustment screws on the hydraulic valve. And there are none shown in the parts picture. While in the manual pictures and text everything they show has adjustment screws.

I'm not sure MF didn't buy the valves from Gresen or Cross. I know the valve on my MF-236 loader is a Gresen. You can look for a name cast in the original casting. There would be most likely Gresen, Cross, or Prince though there were other possible makers.

The MF-135 is a sturdy enough tractor to make the most popular Ford 8N look like a toy where the 135 gets in the same places but does more than twice the work of the N tractors. I will keep my MF-135 at work for a few years yet and will give some farm work to the JD-4020 also, but lately the 135 gets more jobs because of its decent fuel economy. It did my planting and most of my spraying while the 4020 only does loader work and spraying when the added clearance is needed. I put 12.4 - 42 tires on the back of the 4020 to get it to fit down the rows better too.

Gerald J.

to use my 3-point hitch stuff, the outside lever (draft) stays all the way up and the inner lever raises/lowers the implement, foot has to be off the clutch for lift to work

I am guessing that the extra lever is sitting on top of the trany, there is an extra port there that can be used for very limited hydralic flow

for faster hydralics, an external hydralic pump can be added but design varies

maybe you bumped the levers out of position