A professional who repairs pneumatic tools and air motors, such as pneumatic hammers, chisels, and reamers, using mechanic's tools. Responsibilities include:

• Starts motor or tool and listens to sound to locate cause of trouble.
• Disassembles motor and repairs or replaces defective gears, pistons, connecting rods, and other parts, using taps, files, reamers, wrenches, and other handtools.