Motor Equipment Mechanic III

The primary location of this position is in Lexington but could also be out of Chelmsford.

Incumbents of positions in this series inspect, troubleshoot and repair motor vehicles and equipment for use by agency personnel; consult with operators, manufacturers or dealers’ representatives regarding specifications or problems relating to the operation of motor vehicles and/or equipment; write repair orders and specifications for new vehicle sand equipment; and perform related work as required. The basic purpose of this work is to maintain and repair motor vehicles and equipment to ensure safe and efficient operation.

• Repair motor vehicles and equipment by overhauling, rebuilding, replacing, or adjusting gasoline or diesel engines, carburetors, distributors, alternators, generators, starters, differentials, and transmissions according to manufacturers’ specifications.
• Service vehicles and equipment by changing and repairing tires, adjusting brakes and cleaning and lubricating parts as needed to ensure their optimum working order.
• Repair and overhaul electrical circuits and units including all warning light circuits, arrow boards, electronic spreader circuits, electric motor circuits and electric solenoid circuits.
• Perform body repairs and windshield and window replacements.
• Operate snow removal and/or sanding equipment and vehicles.
• Operates other equipment used in automobile operation and repair such as hydraulic lifts, bumper jacks, and diagnostic testing equipment.
• Assist in the purchase, disposal, and registration of motor vehicles.
• Interview applicants for employment and provide training to new employees.
• Troubleshoot and road test motor vehicles and equipment such as automobiles, trucks, buses, bulldozers, cranes and snowblowers to determine the repair work needed to be done.
• Road test motor vehicles and recommend them for road use.
• Supervise vehicle maintenance and repair garage.

• Knowledge of the principles, practices and techniques of automotive repair and maintenance.
• Knowledge of the types and uses of handheld tools used in automotive repair and maintenance such as wrenches, pliers, etc.
• Knowledge of the principles of operation of internal combustion engines.
• Knowledge of the principles of operation of diesel engines.
• Knowledge of the types and uses of materials and supplies used in automotive repair and maintenance.
• Knowledge of the types and uses of equipment used in automotive repair and maintenance such as hydraulic lifts, bumper jacks, grinders, buffers, and air tools.
• Knowledge of the types and uses of precision measuring equipment and devices such as micrometers, calipers, etc.
• Knowledge of safety practices and procedures followed in automotive repair and maintenance.
• Knowledge of the types and uses of diagnostic testing equipment used in automotive repair and maintenance including devices for checking dwell, timing, and idle speed.
• Knowledge of the principles of operation of 2-cycle and 4-cycle engines.
• Knowledge of the principle of carburetion.
• Knowledge of the principles of operation of the various components of motor equipment.
• Knowledge of the standard methods and techniques for the storage of hazardous materials.
• Knowledge of the terminology, coding, symbols, and standard abbreviations used in automotive repair and maintenance.
• Knowledge of troubleshooting techniques used in automotive repair and maintenance.
• Knowledge of the types and uses of oxy-acetylene gas welding equipment.
• Knowledge of the apparatus and instruments used for testing engines and other mechanical or electrical equipment.
• Skill in the use of equipment used in automotive repair and maintenance.
• Skill in the use of handheld tools used in automotive repairs such as wrenches, pliers, etc.
• Skill in the use of precision measuring equipment and devices such as micrometers, calipers, etc.
• Skill in the use of oxy-acetylene gas welding equipment.
• Ability to work independently.
• Ability to understand and apply the laws, rules, and regulations governing motor vehicle operation.
• Ability to operate a motor vehicle.
• Ability to read and interpret documents such as shop manuals, plans,…