Pay Grade:  21



This is highly skilled mechanical work involving the repair and maintenance of gasoline and diesel powered equipment used in the construction and maintenance of highways or other physical settings which are comparable.

Responsible for diagnosing difficult performance problems and improvising replacement, assembly, repair, and troubleshooting techniques when standard procedures do not suffice, and maintaining and repairing a variety of light, medium, and heavy duty equipment. Assignments may include inspecting the mechanical conditions of equipment, or providing training for less skilled mechanics or helpers in highly technical or specialized mechanical work, or providing leadership for an area shop.

Standard Classification Factors

Supervision Received - LEVEL B: "Under general supervision…" Employees working under general supervision usually receive some instructions with respect to the details of most assignments but are free to develop their own work sequences within established procedures, methods and policies. They are often physically removed from their supervisor and subject to only periodic checks.

Difficulty - LEVEL B: Average… Where the employee is confronted with a variety of duties susceptible to different methods of solution which, in turn, places a correspondingly higher demand upon resourcefulness and concentration. Positions which require the analysis and evaluation of raw data and the rendering of conclusions would, in many instances, fall into this category.

Complexity - LEVEL C: Work is of a standardized nature that may involve a variety of duties. Analytical thought becomes more important at this level due to increased data and changing situations. Tasks usually have several steps, some of which may not be directly related. Alternatives may exist for processes or methods to be used in solving problems. Workers at this level exercise a moderate amount of independent judgment. Work is controlled by routine review and reporting to or consultation with supervisors. When guidelines exist at this level, they tend to be more complicated or technical in nature requiring careful interpretation.

Consequence of Actions or Decisions - LEVEL D: Consequences of actions or decisions at this level are significant as the work may be rarely if ever reviewed, making errors difficult to detect. Errors may cause major program failure or a high degree of confusion. Injuries to others due to errors are serious or incapacitating or both and costs due to errors are substantial.

Contacts - LEVEL A: The purpose of the contact is to obtain, clarify, give or screen established factual information, regardless of the type (i.e., easily understood or technical) within a well-defined relationship. Normal communication skills are required.

Physical Demands - LEVEL C: The work requires moderate physical exertion.

Environmental Conditions - LEVEL C: The work environment involves hazards, risks or discomforts typical of working with or around machinery with exposed moving parts, irritant chemicals, heavy equipment or abusive or hostile clientele and patients. Exposure to disagreeable weather conditions and extreme levels of temperature, ventilation, lighting and sound are normal. Protective clothing or gear and specific safety standards or procedures may be required. Serious injury is possible.

Supervision/Leadership - LEVEL A: No supervisory or leadership responsibility; may explain work instructions or assist in training others.

Distinguishing Features

Differs from the Equipment Mechanic Specialist class in which the work includes some managerial responsibility and the complex mechanical work.

Differs from the Equipment Mechanic class in which the repair work requires less skill and is more closely supervised.


Performs full range of overhaul and repair work on light, medium, and heavy duty vehicles. Determines exact nature and extent of repairs required; performs major and minor overhaul and repair on engine assemblies, crossdrive and similar multi-system transmissions, final drive assemblies, complex hydraulic systems, electrical systems, fuel systems including carburetor, fuel injectors, fuel injector pumps, fuel pumps, suspension systems, starters, gauges, generators, hydraulic pumps, alternators, gear boxes, and cooling systems.

Makes diagnoses of mechanical failure by use of specialized testing equipment such as engine analyzers, test benches, compression testers, pressure gauges, voltmeters, dial indicators, micrometers, etc. Troubleshoots, adjusts, and aligns parts and system components, fitting where necessary to insure satisfactory operation of interrelated systems. Makes road test and final inspection to be sure of proper performance.

Instructs and leads subordinates in the repair and reconditioning of equipment commonly used in highway construction and maintenance activities; insures shop safety rules are followed and all shop equipment is kept clean and in good working condition.

Approves requisitions for parts; keeps shop records; makes reports, supervises the maintenance of a perpetual inventory of all shop tools and equipment.

Performs inspection of agency equipment and reports the condition of the equipment and any deviations from the standards and procedures of the equipment maintenance program; may act as teacher and trainer to improve equipment operators knowledge of the operation of their equipment and preventive maintenance.



*Knowledge of the standard practices, methods, tools, and equipment of the trade.

*Knowledge of the principles of internal combustion engines, drive systems, gear boxes, hydraulic systems, and electrical systems.

*Knowledge of the occupational hazards and necessary safety precautions of the trade.

*Knowledge of diagnostic procedures, and of solutions.


Ability to effectively instruct and supervise subordinate skilled and semi-skilled mechanics.

*Ability to read and comprehend repair manuals and wiring diagrams and to write work orders.

*Ability to use tools and to operate machines and equipment commonly used in the automotive/heavy duty equipment mechanics trade.

*Required at Entry


One year of experience in automotive and/ or diesel mechanics to meet the needs of the agency.  Education may be substituted for experience as determined relevant by the agency.

NC:   12/87
REV: 12/95
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