MossRoad
Super Moderator
- Joined
- Aug 31, 2001
- Messages
- 56,447
- Location
- South Bend, Indiana (near)
- Tractor
- Power Trac PT425 2001 Model Year
I spoke with Don at Power Trac while at lunch today. He said that he would run a back hoe off of the MAIN PTO, not the AUX PTO. He said the MAIN PTO has a full 8GPM and 2500PSI and I would get better response from the hoe hydraulics by running it off of the MAIN PTO. He also confirmed that the fluid circulates from the pump, through the valve and back into the tank when the MIAN PTO switch is in the off position. When it is in the on position, the solenoid kicks in and the fluid heads out the hose on the lift arm. If there is no attachment, which means no place for the pressure to go, the engine bogs and the relief cartridge kicks in and dumps it back into the tank. That’s why it is important to have an attachment on the MAIN PTO before flipping the switch; to protect the relief cartridge and pump.
He said that as long as the attachment has open center hydraulics and the plumbing can handle the 8GPM@2500PSI the relief cartridge should never kick in. So, this answers a lot of questions. Now, if I could only convince the CEO that we need a back hoe /w3tcompact/icons/laugh.gif/w3tcompact/icons/laugh.gif/w3tcompact/icons/laugh.gif. (I’ll tell you right now, that ain’t gonna happen for at least two years) /w3tcompact/icons/smile.gif
He said that as long as the attachment has open center hydraulics and the plumbing can handle the 8GPM@2500PSI the relief cartridge should never kick in. So, this answers a lot of questions. Now, if I could only convince the CEO that we need a back hoe /w3tcompact/icons/laugh.gif/w3tcompact/icons/laugh.gif/w3tcompact/icons/laugh.gif. (I’ll tell you right now, that ain’t gonna happen for at least two years) /w3tcompact/icons/smile.gif