thebean
New member
I have a 90s ford new holland 1520 with the 7108 front end loader. The FEL would work sometimes, but other times have absolutely no power in any direction. Then it would come back to life. Finally it just quit and wouldn't even lift the bucket off the ground. When trying to move the FEL the engine did not bog at all and I heard no high pressure bypass or flow so I guessed that it is some kind of significant blow by in the FEL joystick valves. I have read all the threads in here about weak FEL hydraulics, spool valves, etc. I determined that supply pressure was not an issue (3 pt works fine) and so I pulled the cover off the control valves.
Next i opened what looked from the outside to be the pressure bypass valve, which it is. Small nut is jam nut for pressure set. Larger nut removes the valve
After unscrewing and removing the cap use a pair of needle nose to CAREFULLY pull the valve pin out. Be very careful because the pin is small enough to fall down into the hydraulic lines entering the bottom of the bore. I was very surprised when the threaded valve seat came with it! The valve was completely loose and allowing total bypass around the FEL control. Just so this next photo makes sense, the part is the valve seat; the valve pin slides inside. Not supposed to be unthreaded
I made a quick tool to thread it back in with a die grinder and an old nut driver.
I didn't look up the torque, just snugged it in a bit. My driver wasn't robust enough to put much torque one it. Also be careful doing this because if one of the ears on the tool breaks off and falls into the hydraulic lines that could be a problem :/ In retrospect I should have pulled the control spool valves off and done this on a bench but Im kinda a hack.
Put it all back together and it works like new.
Next i opened what looked from the outside to be the pressure bypass valve, which it is. Small nut is jam nut for pressure set. Larger nut removes the valve
After unscrewing and removing the cap use a pair of needle nose to CAREFULLY pull the valve pin out. Be very careful because the pin is small enough to fall down into the hydraulic lines entering the bottom of the bore. I was very surprised when the threaded valve seat came with it! The valve was completely loose and allowing total bypass around the FEL control. Just so this next photo makes sense, the part is the valve seat; the valve pin slides inside. Not supposed to be unthreaded
I made a quick tool to thread it back in with a die grinder and an old nut driver.
I didn't look up the torque, just snugged it in a bit. My driver wasn't robust enough to put much torque one it. Also be careful doing this because if one of the ears on the tool breaks off and falls into the hydraulic lines that could be a problem :/ In retrospect I should have pulled the control spool valves off and done this on a bench but Im kinda a hack.
Put it all back together and it works like new.
