Ladder motor pump system

A machine, comprising:

• a frame;
• a battery supported by the frame;
• a hydraulic fluid tank supported by the frame, the hydraulic fluid tank configured to hold hydraulic fluid;
• a hydraulic pump supported by the frame, the hydraulic pump fluidly connected to the hydraulic fluid tank, the hydraulic pump configured to draw hydraulic fluid from the hydraulic fluid tank and pressurize the hydraulic fluid;
• a one-way electric motor supported by the frame, the one-way electric motor coupled to the hydraulic pump, the one-way electric motor having a motor housing that includes one or more motor bosses connected to the frame for an electrical ground by one or more conductors, the electric one-way motor configured to drive the hydraulic pump to pressurize the hydraulic fluid;
• an electrical switch coupled to the one-way electric motor, the electrical switch configured to power the one-way electric motor with the battery;
• a ladder supported by the frame;
• a ladder actuator supported by the frame, the ladder actuator coupled to the ladder;
• a variable orifice fluidly connected to the ladder actuator,
• the ladder actuator configured to receive the pressurized hydraulic fluid and actuate the ladder, and
• the variable orifice configured to control an actuation speed of the ladder as the ladder transitions between a raised position and a lowered position;
• and
• a hydraulic fluid circuit fluidly connected to the hydraulic pump, the ladder actuator, and the hydraulic fluid tank, the hydraulic fluid circuit configured to:
• route the pressurized hydraulic fluid from the ladder actuator to the hydraulic fluid tank, and
• mix the pressurized hydraulic fluid with unpressurized hydraulic fluid in the hydraulic fluid tank to reduce temperature of the pressurized hydraulic fluid.

A method, comprising:

• receiving an input from an electrical switch;
• activating a one-way electric motor in response to receiving the input, the one-way electric motor having a motor housing that includes one or more motor bosses connected to an electrical ground by one or more conductors;
• driving, by the one-way electric motor, a hydraulic pump;
• drawing, by the hydraulic pump, hydraulic fluid from a hydraulic fluid tank, the hydraulic pump pressurizing the hydraulic fluid;
• routing the pressurized hydraulic fluid from the hydraulic pump to a ladder actuator;
• actuating, with the ladder actuator using the pressurized hydraulic fluid, a ladder,
• wherein actuating the ladder comprises causing, by the ladder actuator, the ladder to pivot approximately 90 degrees between a raised position and a lowered position;
• routing the pressurized hydraulic fluid from the ladder actuator to the hydraulic fluid tank;
• and
• mixing the pressurized hydraulic fluid with unpressurized hydraulic fluid in the hydraulic fluid tank to reduce temperature of the pressurized hydraulic fluid.