Hydraulics wont lift any weight

the hydralics one day would not work. A friend had fixed it to were it would raise up and down. The delima is that it will not lift what it use to lift. It would lift the front wheels off the ground, the hydralics was so strong. When a implement is attached to the 3-point hitch now, the piece of equipment sets there and jumps up and down and range of 3/4". I have tried adjusting the jumping out of it with the flow control valves under the seat, but you can adjust so far. Also the hydralics system after running for a while, they will not lift the equipment you have attached to the 3-point hitch, (bush hog, 3-bottom breaking plow, box blade). Please give me some ideas on what might be the problem.

I have a Worksaver 3-pt hitch on my 1950 Model B. It will lift my Landpride 5 foot finish mower at about 525#, but the front does get a little light. Make sure that you have the correct weight fluid in the transmission/hydraulics. I can use 30 weight Non-detergent here in warm NC, but it may be too heavy in other parts of the country. I can't find the recommended 20 weight anymore.

Good Luck.

As to the reply about the fluid weight: I bought Hy/trans fluid from NAPA, didn't pay attention too much to the weight...it was the only stuff they had available. I guess I better go see what I got!!!!

Seems to me that if the pressure is low I will need to do a rebuild. Are parts availible and is there anything tricky about rebuilding the hydraulic pump?
Thanks