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Bus Mechanic III

Job Description


Performs preventive maintenance and operational safety inspections on school bus fleet and related vehicular equipment; regularly fuels and services school buses.

Reports to Transportation Supervisor


  1. Fuels and performs service island tasks as assigned; lubricates buses and other automotive equipment. Lubrication to include chassis lube, oil and filter changes, gearbox fill or drain and flush, wheel bearing pack, air cleaner service, and all other lubricating procedures as required.
  2. Verifies operational safety of equipment and devices such as brakes, clutch, lights, mirrors, glass, fire extinguishers, first-aid kits, highway warning kits, horn, warning lights and buzzers, emergency exists, wipers, signs, ties, etc.
  3. Changes and repairs tires; performs complete battery service and brake adjustments.
  4. Installs anti-freeze, services cooling systems (fill, drain and flush), inspects, replaces hoses, caps, valves, etc., as required.
  5. Assists journeyman mechanics in overhaul, rebuilding and replacing major assemblies and components.
  6. Makes minor repairs by replacing lights, spark plugs, ignition parts, latches, and switches as required.
  7. Operates lubrication equipment, hoist compressor, battery charger, diagnostic equipment, headlight adjustment machine, alignment board, spark plug tester, drills, presses, air wrenches, and other tools and equipment as required in the performance of assigned duties.
  8. Drives service truck for parts pick-up, towing, and roadside service as required.
  9. Assists in cleaning and organization of the shop, parts room, and other maintenance facilities.
  10. Performs related duties as assigned.

AFFILIATION: PSE – Transportation Mechanics

FLSA: Covered


Education & Experience
High school graduation or equivalent and two years’ general experience in service station type automotive maintenance, plus one year related experience on buses, trucks, or other heavy duty and special vehicular equipment.

Allowable Substitution
Alternative combinations of technical training and work experience will be evaluated by the Personnel Office for comparability.

Knowledge, Skills & Abilities

  • Knowledge of automotive equipment.
  • Ability to perform minor preventive maintenance either alone or under direct supervision.
  • Ability to help troubleshoot equipment problems.
  • Ability to operate various tools and equipment as required.
  • Ability to lift heavy objects.
  • Knowledge of maintenance and repair procedures.
  • Knowledge of safety requirements.
  • Ability to make minor repairs as required.
  • Ability to assist in replacing major assemblies and components under direct supervision.
  • Ability to drive service truck.
  • Ability to establish and maintain effective working relationships.

Licenses/Special Requirements

  • Valid Washington State Driver’s License with an Intermediate or Combination endorsement (commercial driver’s license preferred).
  • Possesses a set of basic automotive mechanic hand tools and storage cabinet.

Updated: 01/1994