Hydraulic system for a vehicle

A lift device, comprising:

• a chassis;
• an implement;
• a hydraulic actuator configured to move the implement relative to the chassis;
• an implement circuit including a first pump coupled to the hydraulic actuator;
• a charge circuit including a second pump configured to selectively provide a flow of pressurized fluid to the implement circuit;
• an activator valve repositionable between a first position and a second position;
• and
• a diverter valve fluidly coupled to the activator valve,
• wherein all of the flow from the second pump passes through at least one of the activator valve or the diverter valve and is directed to the charge circuit when the activator valve is in the first position;
• wherein the diverter valve is configured to divert a portion of the flow from the second pump to the implement circuit when the activator valve is in the second position;
• wherein the charge circuit is fluidly coupled to the implement circuit through the activator valve at least one of (a) when the activator valve is in the first position or (b) when the activator valve is in the second position;
• and
• wherein the portion of the flow from the second pump diverted by the diverter valve passes through the activator valve when the activator valve is in the second position.

A method of operating a lift device, the method comprising:

• providing, by a charge pump, a first flow of pressurized fluid;
• receiving, by a user interface, a first request from a user to propel the lift device;
• controlling, by processing circuitry operatively coupled to the user interface, a valve assembly to direct all of the first flow of pressurized fluid to a charge circuit in response to receiving the first request;
• providing, by the charge pump, a second flow of pressurized fluid;
• receiving, by the user interface, a second request from the user to at least one of reposition or reconfigure an implement of the lift device;
• and
• in response to receiving the second request, controlling, by the processing circuitry, the valve assembly to both (a) direct a first portion of the second flow of pressurized fluid to the charge circuit and (b) direct a second portion of the second flow of pressurized fluid to an implement circuit.