Universal hydraulic auxiliary depressurization circuit

A work machine comprising:

• a frame;
• a ground engaging element supporting the frame;
• an engine in the frame and powers the work machine;
• a working mechanism extending from the frame;
• a quick coupler on an end of the working mechanism for coupling to a work tool;
• a hydraulic system including:
• a power source for powering the hydraulic system;
• a reservoir of hydraulic fluid;
• a plurality of hydraulic lines;
• a pressure source for supplying the hydraulic fluid throughout the plurality of hydraulic lines;
• a control valve for regulating a flow of the hydraulic fluid;
• a depressurize line connected to at least one of the plurality of hydraulic lines and the reservoir, the depressurize line includes an electromechanical valve for regulating a flow of hydraulic fluid in the depressurize line;
• a controller configured to communicate with the electromechanical valve via a power circuit;
• and
• a coupler switch comprising at least three positions configured to communicate with the controller, at least one of the three positions actuates the electromechanical valve to depressurize a work tool auxiliary circuit.

A method of depressurizing a work tool auxiliary circuit of a work machine having a hydraulic system, the hydraulic system includes a plurality of hydraulic lines, a pressure source, a reservoir of hydraulic fluid, and a power circuit having a controller, the method comprising:

• providing the work machine having a work tool and a quick coupler;
• installing a coupler switch having at least three positions in connection with the controller, at least one of the three positions depressurizes the work tool auxiliary circuit;
• installing a depressurization circuit and a relay to the controller;
• installing a depressurize line and an electromechanical valve to the plurality of hydraulic lines, the reservoir, the electromechanical valve in communication with the relay;
• and
• depressurizing the work tool auxiliary circuit when a depressurize position is selected actuating the electromechanical valve to release pressure in the work tool auxiliary circuit.