Power tool hydraulic system

A hydraulic tool comprising:

• a housing including a handle, the handle supporting a switch configured to activate the hydraulic tool;
• and
• a hydraulic drive assembly at least partially supported in the housing and activated by the switch, the hydraulic drive assembly including
• a motor assembly,
• a pump assembly operably coupled to the motor assembly, the pump assembly including a manifold housing in which an inlet passageway is at least partially defined,
• a reservoir configured to contain hydraulic fluid, the reservoir in fluid communication with the pump assembly,
• a baffle supported within the reservoir,
• a cylinder in fluid communication with the pump assembly, the cylinder supporting an auto-return valve,
• a piston disposed in the cylinder and slidable relative thereto from a first position, the piston configured to be coupled to a tool output, and
• a piston spring disposed in the cylinder, the piston spring engaging the piston and biasing the piston toward the first position,
• wherein the inlet passageway fluidly communicates the pump assembly and the cylinder, the inlet passageway supporting an inlet check valve, and
• wherein the cylinder is in fluid communication with the reservoir via an outlet passageway, the outlet passageway having an outlet directed toward the baffle.

A hydraulic drive assembly of a power tool comprising:

• a switch;
• a motor assembly operable to provide a rotational output;
• a gear assembly configured to receive the rotational output from the motor assembly;
• a pump assembly operably coupled to the gear assembly, the pump assembly configured to generate a flow of hydraulic fluid;
• a reservoir in fluid communication with the pump assembly and configured to store hydraulic fluid;
• a baffle supported in the reservoir;
• and
• a cylinder in which a piston is slidably supported, the piston slidable from a first position in response to actuation of the switch and operation of the motor assembly to drive the pump assembly and pressurize the cylinder, the cylinder in fluid communication with the reservoir via an inlet passageway and an outlet passageway, the outlet passageway having an outlet directed toward the baffle,
• wherein the piston returns to the first position in response to the switch being released.