Something is not right about the way your FEL is plumbed.
This should be the path for your series flow.
Pump to hyd block, to FEL and FEL PB OUT back to hyd block, FEL OUT port to any return line, PB from hyd block to remote valve, remote valve PB out to 3pt, then to tank to tank.
Something is not right about the way your FEL is plumbed.
This should be the path for your series flow.
Pump to hyd block, to FEL and FEL PB OUT back to hyd block, FEL OUT port to any return line, PB from hyd block to remote valve, remote valve PB out to 3pt, then to tank to tank.
Although you say that everything works as installed by the dealer, it can work that way, but is not good practice to feed the next valve from the OUT port of the loader valve.
On most loaders, there are three lines going to the loader, IN, OUT/return, and PB OUT, and all three come back to the hyd block.
Standard hyd practice is to run all OUT ports to a tank line.
It appears that someone was lazy or did not know about the PB or did not have the PB part necessary to do the job correctly.
Most return /OUT ports are limited to about 500 psi back pressure, and the way you say it is plumbed, it will see above 500 psi. I would say that you are lucky so far.
I would suggest that if the loader valve is ever damaged from the back pressure, that the dealer owes you a new valve.
The OUT port is designed to dump cyl expended fluid and not the pump flow.
If I am wrong on this, then so be it, but I don't think so.
Not true on the cyl fluid coming through the PB port.
The PB port is designed for high pressure and the OUT port is not.
When the PB sleeve or screw is installed, the fluid gallery is divided, so the cyl fluid flows through the OUT port, and pump fluid will pass through to the next valve.
If the PB port is not used, just a plug installed, the gallery is open so that all fluid will exit the OUT port,
If the OUT port is ever used for fluid flow, it is designed as the last valve in the hyd system so the fluid goes to tank, and therefore the valve does not need PB.