JOB Under general supervision is responsible for providing services, maintenance and repair to County vehicles and equipment ensuring that they are in proper working order. Performs skilled maintenance and repair of heavy-duty equipment, including diesel-powered equipment. Work requires a high degree of technical knowledge as well as the ability to exercise independent judgment in determining the method of repair. Work involves diagnosing and repairing electrical and hydraulic systems, and performing major repairs on a wide range of vehicles, including heavy construction and refuse equipment. Reports to the Fleet Operations Director. EXAMPLE OF DUTIES Communicates with other County employees in order to locate disabled vehicles during service calls. Writes comments on repair orders to exchange information and reports progress during the course of repair work.
Repairs and adjusts gasoline and diesel engines, fuel systems, transmissions, and other mechanical devices. Overhauls in-chassis engines and brake systems. Tests, adjusts, and repairs fuel systems, transmissions, brake components, and other mechanical devices.
Performs vehicle emissions testing on gas or diesel engines. Sets hydraulic pressures to manufacturer specifications. Troubleshoots and repairs hydraulic and electrical problems, including: stuck valves, damaged pumps, and bypassing cylinders. Removes and installs hydraulic cylinders and components. Measures distances to determine wear values, such as brake drums and internal engine components, and to correct mechanical discrepancies.
Uses screwdrivers, wrenches, air-powered tools, etc., in completing repair work. Detects air leaks while inspecting air brakes. Detects vapors from hydraulic, motor, and transmission oils, brake fluids, diesel fuel, gasoline, etc. Inspects equipment and vehicles to assist in problem diagnosis. Traces electrical systems. Works with brake cleaners and solvents. Cleans work area and equipment.
Moves heavy objects, such as: 15-inch brake drum assemblies, clutch and flywheel assemblies, and hydraulic components for distances of up to ten feet using an appropriate aid as needed. Works in small, cramped areas, at heights greater than ten feet, in repairing lighting systems on vehicles, and in a variety of weather conditions in performing field service or road calls. Works around or uses potentially hazardous materials requiring the use of specialized equipment.
Diagnoses operational problems on heavy-duty equipment, such as engines, transmissions, brakes, hydraulic systems, etc., in order to determine the source of a problem. Comprehends, interprets, and makes inferences, anrecommended by the manufacturer in classroom settings.
Knowledge of the hazards and safety precautions of the mechanic's trade; the methods, materials, tools, and standard practices of the heavy-duty mechanic's trade; the principles of operation of internal combustion and diesel engines; steering and suspension systems, and electrical systems and equipment; the operating and maintenance requirements of heavy-duty equipment; the installation and repair of major systems, including: air conditioning, air brakes, and air systems; the state gas or diesel engine emissions testing requirements; and the techniques and practices of gas and arc welding.
Possess the ability to diagnose and repair operational problems on heavy-duty equipment; understand and effectively carry out verbal and written instructions; prepare and maintain accurate work records of maintenance work; handle all physical requirements of the class; and establish and maintain effective working relationships with management, coworkers, supervisors, and user departments.
The duties listed above are intended only as general illustrations of the various types of work that may be performed. Specific statements of duties not included does not exclude them from the position if the work is similar, related, or a logical assignment to the position. Job descriptions are subject to change by the County as the needs of the County and requirements of the job change.d applies knowledge from shop service manuals to follow recommended repair procedures. Prioritizes own work assignments.
Reads and interprets schematic drawings in diagnosing and correcting wiring problems. Learns job-related material regarding electrical and hydraulic systems through on-the-job training. Learns proper repair techniques as
