Tractor Repair: lift problems, lever control, manual valve

Question
I have a Ford 4000 diesel, my question... when i start it up the lift comes all the way up.. when i push the lever up or down it does not work and then take and use the valve on top of the transfer casing... i pull it out and the lift goes down and when i push it back in the lift comes up, but it will not work by using the lever control.
I have to use the manual valve to make it go up or down. Can you give me any advice on what causes this problem?

thanks

Kendall

Answer
Hi Kendall
Not my speciality Hydraulics-- But the manual that i have says
The valve on top of the casing has 3 positions --in to operate the 3 point lift--out to operate any external systems --and half out to operate both. but you have already worked this out no doubt.
If you are only using the 3 point then leave the top valve in the 'IN' position , start the engine with the main lever in the down position, the hydraulics should stay down!
Martin