Patent ID: 8965637
Filing Date: 2015-02-24
Classification: B66C,B66F,E02F

Abstract:
1. A method of operating a working machine which includes a main structure and a working arm, the working arm being pivotally mounted on the main structure at one end of the arm, the working arm being raisable and lowerable relative to the main structure by a first actuator device, and being extendible relative to the main structure by a second actuator device, and the arm carrying in use at its other end a working implement which in use carries a load, the machine further including a ground engaging drive structure by which the machine is driveable on the ground, and the machine having a longitudinal load moment control system which is functional automatically to prevent the operation of the first and/or second actuator device which would increase longitudinal instability in the event that a predetermined machine longitudinal instability is sensed, the method including sensing a parameter relating to the travelling speed of the machine on the ground, and where the machine is determined to be travelling at a speed above a threshold speed, disabling the longitudinal load moment control system so that operation of the first and/or second actuator device is permitted at least to counter a longitudinal instability caused by the machine traveling over an uneven ground surface.