Demonstrated knowledge of: principles and operation of two or four cycle internal combustion gasoline and diesel engines; the maintenance and repair requirements of automobile, street construction, and maintenance equipment; functions of automobile parts, garage supplies and tools; proper usage of oils, greases, and lubricating devices; tune-ups and testing instruments; electrical principles; air conditioning; hydraulic, brake, and suspension system repair and maintenance; wheel alignment; blueprint and schematic concepts; preventative maintenance inspection methods; brake system repair and maintenance (hydraulic, air, electric, and ABS); garage safety measures; operation of various types of equipment; assembly and operation of auxiliary equipment typically found on vehicles, heavy duty trucks and construction equipment; vehicle safety code pertaining to lighting systems, smog control systems, and brake systems; effective communication techniques; and personal computer operation and usages. Demonstrated skills to: diagnose and troubleshoot electrical circuits, fuel systems, brakes (hydraulic, air, electric, and ABS), differentials and hydraulic systems; remove, repair, and replace major and minor engine component parts; perform tune-ups; maintain and repair large and small diesel and gasoline engines; performs electrical and gas welding and cutting; use shop power and hand tools to perform vehicle repairs and adjustments; work effectively under pressure during emergency situations; learn to effectively operate fleet management software on personal computer; and exemplify an enthusiastic, resourceful and effective service attitude with the public, co-workers and others who are contacted in the course of the work.