Diagnose, adjust, repair, or overhaul mobile mechanical, hydraulic, and pneumatic equipment, such as cranes, bulldozers, graders, and conveyors, used in construction, logging, and surface mining.

Test mechanical products and equipment after repair or assembly to ensure proper performance and compliance with manufacturers' specifications. Repair and replace damaged or worn parts. Operate and inspect machines or heavy equipment in order to diagnose defects. Diagnose faults or malfunctions to determine required repairs, using engine diagnostic equipment such as computerized test equipment and calibration devices. Dismantle and reassemble heavy equipment using hoists and hand tools. Clean, lubricate, and perform other routine maintenance work on equipment and vehicles. Examine parts for damage or excessive wear, using micrometers and gauges. Schedule maintenance for industrial machines and equipment, and keep equipment service records. Read and understand operating manuals, blueprints, and technical drawings. Overhaul and test machines or equipment to ensure operating efficiency. Assemble gear systems, and align frames and gears. Fit bearings to adjust, repair, or overhaul mobile mechanical, hydraulic, and pneumatic equipment. Weld or solder broken parts and structural members, using electric or gas welders and soldering tools. Clean parts by spraying them with grease solvent or immersing them in tanks of solvent. Adjust, maintain, and repair or replace subassemblies, such as transmissions and crawler heads, using hand tools, jacks, and cranes. Adjust and maintain industrial machinery , using control and regulating devices. Fabricate needed parts or items from sheet metal. Direct workers who are assembling or disassembling equipment or cleaning parts.

Mechanical -- Knowledge of machines and tools, including their designs, uses, repair, and maintenance. Customer and Personal Service -- Knowledge of principles and processes for providing customer and personal services. This includes customer needs assessment, meeting quality standards for services, and evaluation of customer satisfaction. Mathematics -- Knowledge of arithmetic, algebra, geometry, calculus, statistics, and their applications.

Troubleshooting -- Determining causes of operating errors and deciding what to do about it. Repairing -- Repairing machines or systems using the needed tools. Equipment Maintenance -- Performing routine maintenance on equipment and determining when and what kind of maintenance is needed. Equipment Selection -- Determining the kind of tools and equipment needed to do a job. Installation -- Installing equipment, machines, wiring, or programs to meet specifications. Operation Monitoring -- Watching gauges, dials, or other indicators to make sure a machine is working properly. Operation and Control -- Controlling operations of equipment or systems. Complex Problem Solving -- Identifying complex problems and reviewing related information to develop and evaluate options and implement solutions. Judgment and Decision Making -- Considering the relative costs and benefits of potential actions to choose the most appropriate one. Critical Thinking -- Using logic and reasoning to identify the strengths and weaknesses of alternative solutions, conclusions or approaches to problems.

Manual Dexterity -- The ability to quickly move your hand, your hand together with your arm, or your two hands to grasp, manipulate, or assemble objects. Problem Sensitivity -- The ability to tell when something is wrong or is likely to go wrong. It does not involve solving the problem, only recognizing there is a problem. Information Ordering -- The ability to arrange things or actions in a certain order or pattern according to a specific rule or set of rules (e.g., patterns of numbers, letters, words, pictures, mathematical operations). Near Vision -- The ability to see details at close range (within a few feet of the observer). Multilimb Coordination -- The ability to coordinate two or more limbs (for example, two arms, two legs, or one leg and one arm) while sitting, standing, or lying down. It does not involve performing the activities while the whole body is in motion. Visualization -- The ability to imagine how something will look after it is moved around or when its parts are moved or rearranged. Selective Attention -- The ability to concentrate on a task over a period of time without being distracted. Control Precision -- The ability to quickly and repeatedly adjust the controls of a machine or a vehicle to exact positions. Arm-Hand Steadiness -- The ability to keep your hand and arm steady while moving your arm or while holding your arm and hand in one position. Deductive Reasoning -- The ability to apply general rules to specific problems to produce answers that make sense.

Repairing and Maintaining Mechanical Equipment -- Servicing, repairing, adjusting, and testing machines, devices, moving parts, and equipment that operate primarily on the basis of mechanical (not electronic) principles. Operating Vehicles, Mechanized Devices, or Equipment -- Running, maneuvering, navigating, or driving vehicles or mechanized equipment, such as forklifts, passenger vehicles, aircraft, or water craft. Making Decisions and Solving Problems -- Analyzing information and evaluating results to choose the best solution and solve problems. Updating and Using Relevant Knowledge -- Keeping up-to-date technically and applying new knowledge to your job. Inspecting Equipment, Structures, or Material -- Inspecting equipment, structures, or materials to identify the cause of errors or other problems or defects. Getting Information -- Observing, receiving, and otherwise obtaining information from all relevant sources. Identifying Objects, Actions, and Events -- Identifying information by categorizing, estimating, recognizing differences or similarities, and detecting changes in circumstances or events. Communicating with Supervisors, Peers, or Subordinates -- Providing information to supervisors, co-workers, and subordinates by telephone, in written form, e-mail, or in person. Controlling Machines and Processes -- Using either control mechanisms or direct physical activity to operate machines or processes (not including computers or vehicles). Analyzing Data or Information -- Identifying the underlying principles, reasons, or facts of information by breaking down information or data into separate parts.