A professional who maintains and repairs hydraulic systems of machinery and equipment, such as robots, applying knowledge of hydraulics and mechanics and using handtools. Responsibilities include:

• Observes and listens to operating machinery to detect malfunctions.
• Visually inspects hydraulic lines and components to detect leaks, damage, and wear.
• Reads pressure gauges to detect abnormal oil pressure and smells to detect overheated oil.
• Depresses buttons and switches to turn off machinery.
• Turns valve to release pressure from hydraulic system and disconnects hydraulic supply and return lines, using handtools.
• Removes and replaces defective accumulator, using handtools.
• Connects charging assembly to accumulator and fills accumulator bladder with nitrogen gas to recharge accumulator, following manufacturer's specifications.
• Replaces worn or damaged hydraulic components, such as oil lines, fittings, cylinders, servo-valves, pressure release valves, gaskets, and seals, using handtools.
• Disassembles hydraulic system and removes and replaces defective actuator, pump bearings, and pump motor, using handtools and hoist.
• Observes operation of machinery and equipment to verify repair.
• Performs routine maintenance, such as changing filters, following schedule, using handtools.
• May observe readout on display screen of robot controller to determine nature of system malfunction.
• May disassemble defective hydraulic components, such as pumps and accumulator, at workbench and rebuilds or repairs components.
• May install hydraulic oil lines on new machinery and equipment.