A professional who analyzes malfunctions and repairs, rebuilds, and maintains construction equipment, such as cranes, power shovels, scrapers, paving machines, motor graders, trench-digging machines, conveyors, bulldozers, dredges, pumps, compressors and pneumatic tools. Respnsibilities include:

• Operates and inspects machines or equipment to diagnose defects.
• Dismantles and reassembles equipment, using hoists and handtools.
• Examines parts for damage or excessive wear, using micrometers and gauges.
• Replaces defective engines and subassemblies, such as transmissions.
• Tests overhauled equipment to ensure operating efficiency.
• Welds broken parts and structural members.
• May direct workers engaged in cleaning parts and assisting with assembly and disassembly of equipment.
• May repair, adjust, and maintain mining machinery, such as stripping and loading shovels, drilling and cutting machines, and continuous mining machines, and be designated Mine-Machinery Mechanic (mine & quarry).