This is skilled and supervisory mechanical work in the planning, assigning and inspecting of shop and field maintenance, overhaul and repair of a wide variety of heavy duty trucks, diesel powered construction equipment and related heavy mobile equipment.

Employees in this class are responsible for planning, scheduling, assigning and inspecting all phases of heavy equipment maintenance, repair, overhaul and fabrication work performed by subordinate journeyman mechanics and related shop employees. Duties include participation in maintenance and repair work as needed and fabrication of specialized parts for heavy mobile equipment. Incumbents must exercise independent judgment in implementing service orders, adapting materials and tools, and assigning personnel to accomplish required work on schedule. Supervision is exercised over journeyman mechanics, machinists, welders, maintenance repairers and related shop employees. Work is reviewed by a technical and administrative superior through occasional inspection and conferences for satisfactory completion of daily workload schedules and proper functioning of machinery and equipment overhauled and repaired.

ILLUSTRATIVE TASKS

Plans, schedules, assigns and inspects the work of a group of skilled mechanics and related shop personnel engaged in maintenance, overhaul and repair of a wide variety of heavy duty construction equipment and heavy duty trucks such as cranes, rollers, loaders, graders, bulldozers, draglines, amphibious equipment, garbage packers, trash trucks, heavy duty material dump trucks and similar equipment.

Supervises the overhaul of assemblies and parts such as six-speed automatic transmissions, conventional five-speed transmissions, single and two-speed rear axles, hydraulic systems, compressed air mechanisms, garbage packers and ejector systems, vacuum and electric control systems and components.

Supervises the overhaul of alternators, generators, magnetos, voltage regulators, distributors, carburetors, radiators, cooling systems, power storing assemblies and the installation of pistons, pistons sleeves and bearings.

Supervises the testing of various equipment in order to locate defects in the operation and as a check on completed overhaul and repairs before returning equipment for operational use.

Diagnoses causes of equipment failure and malfunction in difficult or unusual jobs; performs skilled and specialized work as needed in the repair, adjustment and rebuilding of equipment.

Communicates and enforces established safety measures and regulations.

Supervises and assists machinists in the fabrication of special equipment and parts requested by operating personnel as well as the welding work in the repair and fabrication of various types of equipment and body work.

Plans the ordering of specialized equipment and parts necessary in completing assigned jobs or in preventative maintenance.

Makes recommendations regarding hiring, discipline and promotion of subordinates; authorizes leave and overtime; evaluates and rates employee performance.

Performs related work as required.

KNOWLEDGES, ABILITIES AND SKILLS

Thorough knowledge of the methods, material, tools and procedures in heavy automotive and heavy duty truck mechanics.

Thorough knowledge of hydraulics in the form of pumps, motors, and cams.

Thorough knowledge of the principles of both diesel fueled and gasoline internal combustion engines and the repair and maintenance of a wide variety of earth-moving and similar heavy construction equipment and heavy trucks.

Thorough knowledge of the occupational hazards and safety precautions of heavy equipment shop work.

Thorough knowledge of various testing equipment utilized to detect electrical and hydraulic problems.

Knowledge of supervisory practices and procedures.

Ability to plan, assign, inspect and coordinate the work of journeyman mechanics and other personnel in a manner conducive to full performance and high morale.

Ability to fabricate parts and special equipment form drawings and by oral direction.

Ability to diagnose and instruct subordinates in technical maintenance work.

Ability to keep various shop records.

Skill in the diagnoses of technical maintenance problems and the use of various shop tools, equipment and machinery.

NEW 10-78