Cylinder sequencing for a dual stage lift system for a snow wing

A motor grader, comprising:

• a snow wing assembly, including a moldboard, mounted to the motor grader;
• and
• a lifting assembly for the snow wing assembly, configured to lift the moldboard to a bench height, wherein the lifting assembly is coupled to the motor grader and the snow wing assembly, and wherein the lifting assembly includes:
• a four-bar linkage, coupled to the motor grader, including a first hydraulic cylinder that is configured to lift the moldboard a first portion of the bench height;
• a lifting mechanism, coupled to an outboard link of the four-bar linkage, including a second hydraulic cylinder that is configured to lift the moldboard a second portion of the bench height, wherein the first hydraulic cylinder and the second hydraulic cylinder are included in a hydraulic circuit;
• and
• one or more hydraulic fluid diverters configured to divert a flow of hydraulic fluid in the hydraulic circuit away from a first stage hydraulic cylinder, wherein the first stage hydraulic cylinder is one of the first hydraulic cylinder or the second hydraulic cylinder, and to a second stage hydraulic cylinder, wherein the second stage hydraulic cylinder is the other one of the first hydraulic cylinder or the second hydraulic cylinder, based on a pressure value associated with the first stage hydraulic cylinder.

A method for sequencing a first stage hydraulic cylinder and a second stage hydraulic cylinder of a lifting assembly of a snow wing, comprising:

• causing hydraulic fluid of a hydraulic circuit to flow to the first stage hydraulic cylinder to cause a moldboard of the snow wing to be moved a first portion of a bench height associated with the moldboard;
• detecting that the first stage hydraulic cylinder has moved the moldboard the first portion of the bench height based on a pressure value associated with the first stage hydraulic cylinder;
• and
• causing, via a pressure relief valve, the hydraulic fluid of the hydraulic circuit to be diverted away from the first stage hydraulic cylinder and to the second stage hydraulic cylinder to cause the second stage hydraulic cylinder to move the moldboard a second portion of the bench height based on detecting that the first stage hydraulic cylinder has moved the moldboard the first portion of the bench height.