oldnslo
Super Member
Do you have a hydraulic schematic for your machine?
Any idea on how the pump is controlled? Direct connection to the swashplate pintle or separate hydro- mechanical control? If separate hydro-mechanical where charge pressure is used to bring pump on stroke then loss of charge pressure could cause the fluttering but would usually provide some reduced drive speed.
Are the wheel motors geroler - geroter style? These are sometimes called Char-Lynn motors.
Any idea on how the pump is controlled? Direct connection to the swashplate pintle or separate hydro- mechanical control? If separate hydro-mechanical where charge pressure is used to bring pump on stroke then loss of charge pressure could cause the fluttering but would usually provide some reduced drive speed.
Are the wheel motors geroler - geroter style? These are sometimes called Char-Lynn motors.