Hagen Brothers farms,Goodrich ND | School Of Hard Knock - 8/16/2017 22:36
I have no experience with the issue you have got, but those systems havs to have some sort of bypass for the oil pressure to orveride as to smooth out the jerking and avoid dead ending of the load/ engine when you slam, the hydro forward or overload the engine....and doing damage to the pressure system. There has to be some valves and springs/ one for forward and one for reverse that can be switched around to test for weak springs and premature bypassing.....(seems to me Jon Hagen?? once told me about troubleshooting this issue?).Or amybe somene else can chime in with some tips.
On the old 14 series, you have pressure relief cartridges where the hyd lines attach to the hyd motor. Two cartridges, one for forward, another for reverse. When they fail, you can have weak / no forward or reverse. If switching the cartridge position moves the problem to the other direction, it points to a failed cartridge. A failed or out of adjustment inching pedal internal spring which is what limits drive system pressure, can make for weak drive hydraulics and lack of speed. Also as suggested by another, a worn or out of adjustment speed / direction control arm where the control cable attaches to the hydro pump, can cause lower than normal speed. |
2388 combine problem
