Diesel Technician III

Maintenance / Mechanics / Parts / Utility / Materials Wallkill, NY


Diesel Technician III


Performs routine maintenance on equipment and determines when and what kind of maintenance is needed. Conducts tests and inspections of products, services, or processes to evaluate quality or performance. Installs equipment, engines, hoses, batteries, tires, wheels/brakes, HVAC, wiring, etc., or programs to meet specifications. Watches gauges, dials, or other indicators to make sure equipment is working properly. Service, repairs, adjusts, and tests machines, devices, moving parts, and equipment that operate primarily on the basis of mechanical principles. Inspects equipment, structures, etc., of materials to identify the cause of errors or other problems or defects. Analyzes information and evaluate results to choose the best solution and solve problems.   


  • Starting pay $27/hr
  • Adjust and reline brakes, align wheels, tighten bolts and screws, and reassemble equipment.   
  • Align front ends and suspension systems.   
  • Attach test instruments to equipment and read dials and gauges in order to diagnose malfunctions.   
  • Disassemble and overhaul internal combustion engines, pumps, generators, transmissions, clutches, and   
  • differential units.   
  • Examine and adjust protective guards, loose bolts, and specified safety devices.   
  • Inspect brake systems, steering mechanisms, wheel bearings, and other important parts to ensure that they are   
  • in proper operating condition.   
  • Inspect, repair, and maintain automotive and mechanical equipment and machinery such as pumps and   
  • compressors.   
  • Inspect, test, and listen to defective equipment to diagnose malfunctions, using test instruments such as   
  • handheld computers, motor analyzers, chassis charts, and pressure gauges.   
  • Operate valve-grinding machines to grind and reset valves.   
  • Perform routine maintenance such as changing oil, checking batteries, and lubricating equipment and   
  • machinery.   
  • Raise trucks, buses, and heavy parts or equipment using hydraulic jacks or hoists.   
  • Installs or rebuilds diesel engines.   
  • Recondition and replace parts, pistons, bearings, gears, and valves.   
  • Repair and adjust seats, doors, and windows, and install and repair accessories.   
  • Rewire ignition systems, lights, and instrument panels.   
  • Inspect and verify dimensions and clearances of parts to ensure conformance to factory specifications.   
  • Specialize in repairing and maintaining parts of the engine, such as fuel injection systems.   
  • Test drive trucks and buses to diagnose malfunctions or to ensure that they are working properly.
  • Use hand tools such as screwdrivers, pliers, wrenches, pressure gauges, and precision instruments, as well as   
  • power tools such as pneumatic wrenches, lathes, welding equipment, and jacks and hoists.   
  • Other duties to ensure the safe operation and efficiency of the department.

  •  5+ years’ experience. Must be able to diagnose, troubleshoot and repair the most difficult of all vehicle and equipment service. 
  • Must be able to teach Mechanic B and C as time permits, more complex repair techniques.
  • Must demonstrate superior mechanical skills and mentoring capabilities. Must be able to diagnose, troubleshoot and repair the most difficult of all vehicles and equipment in service.
  • Must be able to teach Mechanic B and Cs, as time permits, more complex repair techniques.
  • Must demonstrate superior customer service skills and mentoring capabilities as well as perform other duties to ensure the safe operation and efficiency of the department. The Mechanic A must possess a CDL license with air brakes and a passenger endorsement, 609 and 608 air conditioning certifications and at least four (4) H, T, or EV series ASE certifications.
  • ASE Certification is the preferred method of hiring and promotion.   
  • In lieu of ASE Certifications an A Tech must have four (4) years of full-time heavy-duty vehicle maintenance   
  • Experience and pass a practical test demonstrating A Tech proficiency.   


  • The physical demands described here are representatives of those that must be met by the employee to successful   
  • perform the essential functions of this job. Reasonable accommodations can possibly be made to enable individual   
  • with disabilities to perform the essential functions.   
  • 10% of work is accomplished in doors and in air conditioned or well-ventilated facilities.   
  • 90% of work is accomplished outside in varying temperature, weather, and humidity conditions; most work   
  • is performed alone and in remote locations.   
  • Frequently stands and walks; ability to sit for up to three hours; walk for long distances and on possible sloped   
  • ground or slippery and uneven surfaces; normal manual dexterity and eye-hand coordination; ability to lift or   
  • handle material weighing up to 50 to 75 lbs. without assistance; ability to bend, stoop, kneel, crawl, and   
  • crouch; and corrected hearing and vision to normal range; verbal communication.   
  • Exposure to heavy traffic areas while performing the duties of the job.   
  • Exposure to considerable amounts of dust, vehicle fumes and noise.   
  • Exposure to cleaning solutions, oils, and other liquids.   
  • Must be able to travel for company training, meeting or support missions.   
Transdev is an Equal Employment Opportunity (EEO) employer and welcomes all qualified applicants. Applicants will receive fair and impartial consideration without regard to race, sex, color, national origin, age, disability, veteran status, genetic data, gender identity, sexual orientation, religion or other legally protected status or any other classification protected by federal, state, or local law.