Massey Ferguson 135 Hydraulic Lift - no resistance

Hello, I am having a problem with my MF 135 hydraulic lift. Basically, the lift arms do nothing at all. I can easily lift them and move them up and down by hand, which I feel like is not supposed to be possible. I can hear movement inside, which I assume is the piston moving back and forth.

I will try to explain what I have done in more detail: My original problem and reason for diving into it was, the position control did not work at all but draft control did. Following the shop manual and information found on forums here and elsewhere, I removed the lift cover to investigate. I saw where the roller had slipped out of place, as mentioned by a user in another thread. I then reinstalled the lift and side covers, refilled with hydraulic fluid, and cranked up the tractor to discover things worse than when I began the repairs.

Can anyone please advise on what I may have missed, or if I could have broken something without knowing? Should the lift arms be moveable by hand? Again, the only thing I (intentionally) changed was slipping the position control roller back in place, so that the pump lever moves forward in down setting and back in up setting (it does similarly when testing the draft control) - I did not do anything at all with the lift arms and the piston/cylinder.

Its NORMAL for the lift arms to be raised by hand. Does the pump inside control lever move back and forth with engine off and using the position control lever with the draft lever fully UP?

Is the lever you mention the one with the roller on it? I will need to redrain some fluid so I can remove the right side cover and see if it does move back and forth. It will take me a few days before I can do it, but I will definitely post and update here when I do. I appreciate your help. I can post pictures/video also if that would be helpful.

3pt hitches generally do not have "down pressure" so there is nothing holding them from being lifted up. This is true for most tractors with a factory 3pt at least in North America.

look up 135 lift problems on youtube you can find out what to look for on one of the videos'.

Thanks to everyone for your help and advice! I checked the pump lever and made sure it was moving like it should. After rereading the manual and watching several videos on the hydraulic system, I decided to experiment specifically with the stand pipe and transfer plate. It seems the pipe was not in the proper location on the pump.

Again thank you to everyone. Forums like this are a lifesaver thanks to you!