A professional who repairs and overhauls brake systems in automobiles, buses, trucks, and other automotive vehicles. Respnsibilities include:

• Pushes handle of hydraulic jack or pushes hoist control to raise vehicle axle.
• Removes wheels, using wrenches, wheel puller, and sledgehammer.
• Replaces defective brakeshoe units or attaches new linings to brakeshoes.
• Measures brakedrum to determine amount of wear, using feeler gauge.
• Inserts vacuum gauge into power-brake cylinder, starts engine, and reads gauge to detect brake-line leaks.
• Repairs or replaces leaky brake cylinders.
• Repairs or replaces defective air compressor in airbrake systems.
• Replaces wheel on axle and adjusts drumshoe clearance, using wrench.
• Fills master brake cylinder with brake fluid, pumps brake pedal, or uses pressure tank, and opens valves on hydraulic brake system to bleed air from brake lines.
• Closes valves and refills master brake cylinder.
• May be designated according to specialty as air brake repairer; bus brake repairer; hydraulic brake repairer.