Diagnose mechanical issues with equipment and trucks. prepare/research parts and procedures needed to repair the equipment and trucks. perform the service and repairs on the equipment and trucks. Inspect vehicles for damage and record findings so necessary repairs can be made. Test vehicles and test components and systems, using equipment such as infrared engine analyzers, compression gauges, and computerized diagnostic devices. Test and adjust repaired systems to meet manufacturers' performance specifications. Repair, reline, replace and adjust brakes. Review work orders and discuss work with supervisors.