Mobilewrench
Senior Member
FF01U1Q203192
Had this machine torn down for about a week to replace the engine rear main seal and the "transmission" coupler on the flywheel. First time for me on this machine, but a job I have done about twenty times before.
After I bled the pumps and fired it back up I have very little power to hydraulic functions. Things move, just very slow and the boom will not lift under its own power. By that I mean, I could only get the boom off the ground by using the bucket cylinder to rotate the coupler (or the thumb cylinder) against the ground while booming up. But once the second function got past the point of having ground to push against... No more boom up.
There were a few more things that I worked on while it was torn down. I know some of these are very unlikely to be related, but I will list them anyway.
Engine valve cover gaskets, left pilot valve joystick spool seals, ccv breather hose, hydraulic tank suction screen, hydraulic tank return couplers (flex master expansion joint hardline compression fittings), replaced an oring on the hardline between the valve body and the oil cooler. That is the less likely list.
Had this machine torn down for about a week to replace the engine rear main seal and the "transmission" coupler on the flywheel. First time for me on this machine, but a job I have done about twenty times before.
After I bled the pumps and fired it back up I have very little power to hydraulic functions. Things move, just very slow and the boom will not lift under its own power. By that I mean, I could only get the boom off the ground by using the bucket cylinder to rotate the coupler (or the thumb cylinder) against the ground while booming up. But once the second function got past the point of having ground to push against... No more boom up.
There were a few more things that I worked on while it was torn down. I know some of these are very unlikely to be related, but I will list them anyway.
Engine valve cover gaskets, left pilot valve joystick spool seals, ccv breather hose, hydraulic tank suction screen, hydraulic tank return couplers (flex master expansion joint hardline compression fittings), replaced an oring on the hardline between the valve body and the oil cooler. That is the less likely list.