TO20 lift control fork, valve connection

[db4570]

My nice old TO-20 gradually developed an unresponsive draft control lever. Somehow I had the impression it was a mechanical connection issue rather than pump issue. So, I removed the inspection/dipstick cover, but couldn't get my head in there around the fender to see much of anything, and trying to snap pictures didn't help. So I took off the top cover along with the control fork.

I can't see in the bottom of the sump because the oil is still in it. But I didn't find anything obviously broken or missing. Everything looks nice and shiny and clean.

So my next step is to drain and save the oil (because it is fairly new and looks pretty good). Hopefully being able to see in there this will help me figure out how the control fork connects to the valve. I can't find anything on how this is done.

How is the control fork connected to the valve? I assume I can only do this once the top cover is re-installed? Can it be done by feel, or do I need to take the wheel and fender off for access and visibility?

 

[John Deere D]

My nice old TO-20 gradually developed an unresponsive draft control lever. Somehow I had the impression it was a mechanical connection issue rather than pump issue. So, I removed the inspection/dipstick cover, but couldn't get my head in there around the fender to see much of anything, and trying to snap pictures didn't help. So I took off the top cover along with the control fork.

I can't see in the bottom of the sump because the oil is still in it. But I didn't find anything obviously broken or missing. Everything looks nice and shiny and clean.

So my next step is to drain and save the oil (because it is fairly new and looks pretty good). Hopefully being able to see in there this will help me figure out how the control fork connects to the valve. I can't find anything on how this is done.

How is the control fork connected to the valve? I assume I can only do this once the top cover is re-installed? Can it be done by feel, or do I need to take the wheel and fender off for access and visibility?

Pics as per Ferguson Parts Book as well as Service Manual...
I own a Harry Ferguson as well as a Ford 2-N....
2-N and Ferguson removal of top Hydraulic cover are of the same procedure..."IF" you decide to remove top cover...

The Transmission,Differential,Hydraulics are of a common oil sump
QUOTE:
How is the control fork connected to the valve?

In my humble experience,I NEVER remove the top cover before disconnecting the control valve!!

I always drain the OIL before the TOP COVER is removed.

Ferguson Service Instruction Book sates capacity at 28 imperial quarts / 22.8 liters
Bob...

 

[Fritz Maurer]

You have to spread the U- shaped thing and position it on the balls on the cross bar. It stays on by the spring force of the "U".

Can hook it back up by feel, under the oil.

If your top link reaction spring is out of adjustment, any sudden movement in the draft control linkage can disconnect the "U" from the valve. It happened a lot on ours, til we figured out what was wrong.

 

[db4570]

Thanks for the information. It looks like I will have to remove the tire and fender to get in a position where I can reach in there.

 

[Duner Wi]

This might help.

D

Post in thread 'Changing TO/TE Control Valve'

Jan 26, 2019

What I do is loop a string around one fork and thread it thru a bolt hole and then I can control that side of fork from other side of transmission where I am.

• Duner Wi

 

[John Deere D]

My nice old TO-20 gradually developed an unresponsive draft control lever. Somehow I had the impression it was a mechanical connection issue rather than pump issue. So, I removed the inspection/dipstick cover, but couldn't get my head in there around the fender to see much of anything, and trying to snap pictures didn't help. So I took off the top cover along with the control fork.

I can't see in the bottom of the sump because the oil is still in it. But I didn't find anything obviously broken or missing. Everything looks nice and shiny and clean.

So my next step is to drain and save the oil (because it is fairly new and looks pretty good). Hopefully being able to see in there this will help me figure out how the control fork connects to the valve. I can't find anything on how this is done.

How is the control fork connected to the valve? I assume I can only do this once the top cover is re-installed? Can it be done by feel, or do I need to take the wheel and fender off for access and visibility?

Any update?
Did you remove the Top Cover before you disconnected the control valve?