Another TO-20 Hydraulic Question: Sticks Up

My TO20's hydraulics have generally been working fine, but this spring the arms started sticking in the up position with weight on them. They will eventually come down. A little working the control back and forth seems to encourage it a bit.

The arms lift fine, although sometimes with something really heavy, like the brushhog, something goes KLUNK-KLUNK-KLUNK_KLUNK on the way up.

The fluid looks good, but a bit over-full.

I am hesitant to go poking around in the hydraulic system without a clear plan.

Any ideas?

Thanks,

David

Hi...I'm NOT an expert on the LIFT of the Ferguson and or the Ford N series:
I do own and operate a Ferguson TEA-20 since 1974(Same Hydraulics same as your T0-20 and a Ford 2-N same hydraulics as an early Ferguson).

I've had lift arms that would not drop down on both my TEA-20 and 2-N...

Each time the CONTROL VALVE was hung up.

With the oil drained,(Hydraulic) engine not running, "ROUND" inspection plates removed I noticed the "CONTROL VALVE was NOT moving when the operator control lever was moved all the way up and all the way down.

Most individuals use a long screw driver and assist the movement of the control Valve when the operator lever is moved, this frees up the control valve.

I consider this to be a "dodge the bullet fix until it happens again".

Last week I had to remove the HYDRAULIC PUMP from a Ford 2-N and properly clean the entire oil cavity (Transmission, Hyd. and Differential cavity as well as the pump.

There is NO OIL FILTER or STRAINER on these Hydraulic pumps....very sensitive to foreign particulate, and corrosion:

Bob. Owner operator Ferguson, Ford 2-N and other colored Tractors..

Two years ago my TO-20 arms would not go down, no matter how much weight I put on them. I had left them up over the winter. I pulled the top cover off and discovered the cylinder had rusted to the point the piston would not slide in it any more. I finally got the piston out, cleaned up the bore, and installed a new piston with "O" ring and washer. Lesson learned: Do not leave the arms up when parking it long-term.

Thanks for the replies.

It turned out to be very simple. The first thing I did was adjust the master control spring, and that did it! It seems to work perfectly now.

I was a little nervous it was something more serious.

David

I am currently still battling the same problem. Could you explain how to adjust the spring?
Thanks

Ryan

I had to adjust SPRING as per below pictures and all works great:


Bob...Ferguson as well as Ford 2-N