Vic, there is a block attached to the top of the relief valve that took the place of the factory cover for the relief valve. I assume this could be used to feed a fel. I am using a pressure gauge from Northern Hydraulic that reads up to 3000psi. I am connecting to the forward fitting on the block and after changing the hyd oil today, I am now getting around 500psi at this point. Since I am not too familiar with hydraulics, this is as far as I have gone. PS I did replace the filter screen along with the oil. According to what I have found out and by looking at this block, I should be able to connect a hose from side A to side B of this block and looks like I should be providing pressure to the hyd cylinder, control valve and draft valve if I am looking at this correctly. While cleaning the relief valve, I found a machine screw inside the relief valve, I assume they were trying to increase pressue, I removed it and there are 3 shims inside which I left in place. The lift arms do not move and I am now lost. Not sure if there is a check valve or something that could possibly be causing the hyd cylinder not to work. any help would be greatly appreciated, George