sony224422
Member
I have isolated my backhoe (723) and gone through the controls for the controls for the loader with a flow meter and my pump makes good pressure until the psi is increased. At idle with no load, my pump will be in 10-13 gpm range. At 1600 rpm its over 20, but as soon as the psi hit around 1200, the flow dropped to under 5. There is not really an easy way to isolate the pump, I cant get a connection off the pump or the connection to the controls without taking off every line.
The relief valve would be the easiest to fix, but I cant seem to find one. The control I have is the Cessna one. I wouldnt mind changing that out if I could find one and also if that was thought to be the issue. If it is the front pump, I believe I can still find a replacement for that, from this site.
1964 4000 gas front pump.
The relief valve would be the easiest to fix, but I cant seem to find one. The control I have is the Cessna one. I wouldnt mind changing that out if I could find one and also if that was thought to be the issue. If it is the front pump, I believe I can still find a replacement for that, from this site.
1964 4000 gas front pump.