3 pt hitch lifts automatically

[RobertM]

Hello,

I bought a super major last year which was built in 1964 and sold here (Canada) as a Ford 5000 diesel. When the pto is engaged the 3 pt hitch lifts up regardless of the position of the lever and stays there. I'm not a mechanic. I've looked here in the forum, in the manuals and in the hydraulic supplement to try to understand what is going on. It seems to me that the control valve must be stuck in the up position as a result of the linkage being disconnected inside, the control valve being stuck in its pipe or the spring that pushes it back being too weak. The tractor did sit for a while ( a year or two) before I got it, so maybe it's seized up in there. Am I on the right track here? If it is one of these things, am I right that I have to lift the lid to fix it? Thanks in advance for taking the time to answer. The tractor looks bad, doesn't have lights or instruments, but the engine runs like a top and I'm very pleased with it.

Rob

[Brian]

It is not the control valve stuck it will be the unload valve. This can happen if the tractor has not been used or if the "O" ring swells slightly.

The top has to come off and the unload valve drawn out and polished with metal polish not abrasive paper. Same goes for the control valve, too hard a polish and you will have made yourself expense.

Go to the site Home Page www.fordsontractorpages.nl then go to the Wiki. You will need two words to get in, "fordsontractorpages" and "dotty" when it asks for your password. On here you will find an article on hydraulics with pictures of the unload valve and how to get to it.

[RobertM]

Thanks, Brian, I really appreciate your help.

all the best,
Rob