Johndeere9610 Ford guy Dec 15, 2010 #1 I have a 426 backhoe that will not move it act likes the pump it in just isnt building pressure? Any Ideas
I have a 426 backhoe that will not move it act likes the pump it in just isnt building pressure? Any Ideas
C cummins_255 New member Dec 15, 2010 #2 have you hooked a pressure gauge to see what the line pressure is?
Johndeere9610 Ford guy Dec 16, 2010 #3 No. But I can tell you that there is no pressure on the back pressure port.
4x4dually Moderator Dec 16, 2010 #4 Not knowing much about your particular setup, I'm assuming that it uses a positive displacement pump. If that is the case, could the relief valve be stuck open or damaged relieving all the pressure back to the tank?
Not knowing much about your particular setup, I'm assuming that it uses a positive displacement pump. If that is the case, could the relief valve be stuck open or damaged relieving all the pressure back to the tank?