This is skilled work at the journeyman level in the diagnosing, repair and preventive maintenance of diversified trucks and other heavy equipment.

Employees in this class perform skilled work in the repair and overhaul of waste trucks, trash trucks, dump trucks, fire rescue units, fire suppression units, fire rescue/suppression support units, water trucks, wreckers, garbage packers, trailers, tractors, forklifts, stake body trucks, light towers, trash cranes, refrigerated reefer trucks, sweepers, vactors, cement trucks, basket lifts, bush hogs, buses, boats, backhoes, pressure cleaners, welders, chainsaws, chippers, compost mixers, compressors, foggers, edgers, jack hammers, fuel trucks, bomb trucks, motorhomes, auger trucks, lube trucks, paddy wagons, step vans, spray rigs, and other equipment. Work involves diagnosing repairing and overhauling engines, transmissions, HVAC systems, ignitions, electrical systems, hydraulic systems, differentials, 5th wheels, brakes, hydrodynamic systems, fuel delivery systems, suspensions, steering, and other systems. Related duties may include maintaining customer relations, operating a computer terminal to enter work order information and research vehicle repair histories, inspecting vehicles after commercial repairs, new vehicle inspection and preparation, and maintaining parts inventories. Supervision is occasionally exercised over maintenance repairers, semi-skilled laborers and heavy truck tire repairers assisting in various phases of work. Supervision is received from a shop supervisor or other superior who reviews work for satisfactory performance of equipment repaired, overhauled or maintained.

ILLUSTRATIVE TASKS

Tests, inspects and repairs vehicle emission equipment in compliance with vehicle emissions legislation.

Diagnoses and repairs complete electrical systems, suspension and steering systems, and truck transmissions/transaxles.

Employs onboard computer systems and external computerized diagnostic systems in the performance of repair, overhaul and maintenance work.

Inspects, diagnoses, repairs and overhauls hydraulic and air brake systems, including Anti-lock Brake Systems (ABS).

Debriefs vehicle operators to understand driveability concerns and affect appropriate repairs.

Performs some minor body work, including removal and replacement of body parts; inspects vehicles after commercial repair; adjusts and aligns body parts and hardware, as required.

Orders parts and maintains adequate parts inventory.

Diagnoses and repairs air-conditioning systems in compliance with environmental legislation.

Changes vehicle tires and wheels.

Prepares and completes work orders; operates computer terminal to enter information and research vehicle repair history in the automated Equipment Management System.

Performs preventive maintenance, including complete unit inspection, changing fluids and filters, and making adjustments; performs lubrication and repairs all defects.

Operates, diagnoses and repairs fire suppression hydrodynamic systems.

Adjusts, repairs and overhauls complete hydraulic systems on various truck applications.

Inspects, diagnoses and repairs power take-off (PTO) systems.

Diagnoses and repairs fossil fuel delivery systems, including natural gas (CNG), diesel fuel injection, and gasoline powered equipment.

Operates, diagnoses and repairs aerial ladder equipment.

Performs wait jobs, as required.

Cleans and maintains shop, tools, and shop equipment.

Performs repairs on highway roadside or remote sites when necessary.

Road tests and/or certifies equipment before returning to in-service status.

Inspects new equipment and assures contractual specifications have been met prior to vehicle acceptance.

Observes established safety practices and procedures.

Performs related work as required.

KNOWLEDGES, ABILITIES, AND SKILLS

Considerable knowledge of design, repair and maintenance characteristics of assemblies, components and systems of a wide variety of heavy equipment applications.

Considerable knowledge of the hand tools and computerized diagnostic equipment needed for major and minor repairs to fossil fuel powered equipment.

Considerable knowledge of specialized equipment used on emergency response, public works, and solid waste collection and disposal vehicles.

Knowledge of the occupational hazards and safety precautions of heavy duty truck repair and maintenance work.

Ability to use modern devices, techniques and equipment to diagnose malfunctions in a wide variety of vehicles and their associated equipment.

Ability to diagnose, repair, maintain and overhaul a wide variety of heavy vehicles and specialized equipment.

Ability to read and understand service and parts manuals.

Ability to follow verbal and written instructions.

Skill in the diagnosis and testing of a wide variety of heavy duty trucks and associated specialized equipment.

Skill in heavy duty truck mechanics.

Skill in the care and use of tools and equipment used in the diagnosis and repair of heavy duty trucks and associated equipment.

REV 2-94