Under occasional supervision, performs preventive maintenance on County vehicles, heavy equipment and machinery to ensure safe and proper working conditions. Tasks include but not limited to diagnosing malfunctions, installing and adjusting parts, balancing tires, mounting and removing tires, charging systems, lubricating parts, replacing filters, flushing cooling systems, adjusting brakes, changing fluid and filters, etc. Completes tasks according to specifications and requests, within specific time constraints. Uses mechanic's tools, tire balancer, tire changer, diagnostic tools, electrical tester, hydraulic lift, press, drill, hand and power tools, etc., to accomplish daily assignments and the maintenance of diesel engines, hydraulic equipment and transmissions. Must possess a valid South Carolina driver's license. Requires a high school diploma. Exercises care and safety in the use of equipment and tools.