Need help with Ford 801 select o speed

[Oldsam]

I have a Ford 801 Selecto speed that moves fine in all the gears when I first start it up then it will barely move unless I increase the RPMs quite a bit. I changed the oil on it and checked the pressure at the test points underneath the left foot rest. Got around 120 psi at both test ports.
Also, in the past, my lift would take several minutes before it would start to work, and now it will not work at all. Any help would be greatly appreciated. Thanks for your time.

 

[J.Wondergem]

Suppose that you might have a internal leak some where?

 

[Andy Wickiser]

I have a Ford 801 Selecto speed that moves fine in all the gears when I first start it up then it will barely move unless I increase the RPMs quite a bit. I changed the oil on it and checked the pressure at the test points underneath the left foot rest. Got around 120 psi at both test ports.
Also, in the past, my lift would take several minutes before it would start to work, and now it will not work at all. Any help would be greatly appreciated. Thanks for your time.

Try posting your question to the Ford board, you'll likely get more and better responses.