Service Technician Journey Level 5 (Diesel/Heavy Duty Trucks)

To effectively perform the duties of a Service Technician Level 5 individuals must be able to demonstrate several competencies that are essential to the position, which include:

• Extensive knowledge of PACCAR MX and Cummins diesel engine systems, encompassing fuel injection, emissions control, turbocharging, cooling, and lubrication systems. 


• Proficiency in using specialized diagnostic tools, software, and instrumentation specific to both PACCAR MX and Cummins engines for accurate diagnosis and calibration.


• Expertise in interpreting technical documentation, including service manuals, wiring diagrams, and engineering specifications, to guide repairs and modifications.


• Strong leadership and mentorship abilities to supervise junior technicians, lead engine overhaul projects, and collaborate effectively with other departments. 


• Utilize advanced troubleshooting techniques to identify and address complex mechanical, electrical, and performance-related issues


• Perform major engine overhauls, including disassembly, inspection, and reassembly, ensuring adherence to manufacturer specifications and quality standards.


• Perform in-depth performance evaluations and efficiency optimizations to enhance engine performance, fuel efficiency, and emissions compliance.


• Stay abreast of the latest technical advancements, service procedures, and diagnostic software for both PACCAR MX and Cummins engines.


• Excellent communication skills for liaising with customers, service advisors, OEM representatives.


• Must be dependable, able to follow instructions, respond to management direction, and must be able to improve performance through management feedback.


• Clear and effective communication skills, both verbal and written, to convey technical information in the technician notes and to the foreman and or manager.


• Leadership qualities to effectively advise junior technicians.


• Commitment to safety protocols and regulations governing the maintenance and repair of commercial vehicles.


• Collaborate with foremen and parts department to coordinate repairs and order necessary components.


• Good written, verbal, and interpersonal communication abilities.


• Good computer skills.

Education and Experience: Any combination of training and experience which would provide the required knowledge, skills, and abilities is qualifying.   A typical way to obtain the required qualifications would be:

Minimum of five years (5) of increasingly responsible experience in Technician work in a heavy/medium-duty application.

Licenses and Certifications:

• Possession of, or ability to obtain, a valid Class C California driver’s license. Class A preferred.


• Not required but preferred – completion of a diesel technology program or apprenticeship


• Completion of rigorous training programs or certifications offered by both PACCAR and Cummins, focusing on their respective engine technologies and service procedures.


• Years of hands-on experience working with PACCAR MX and Cummins engines in a dealership, fleet maintenance, or specialized repair facility.


• Continuous participation in professional development activities, such as workshops, seminars, and online courses, to stay current with evolving technologies and industry best practices.

Work Environment:

The physical demands and work environment characteristics described here are representative of those that must be met by an employee to successfully perform the essential functions of the job. 

While performing the duties of this job, the employee is regularly required to stand, walk, climb or balance, stoop, kneel, crouch or crawl. The employee is occasionally required to sit. The employee must regularly lift/push or pull/or move up to 60 pounds. 

While performing the duties of this job, the employee is regularly exposed to moving mechanical parts. The employee is frequently exposed to wet and/or humid conditions, extreme heat, and vibration. The employee is exposed to fumes or airborne particles, toxic chemicals, and outside weather conditions. The noise level is normally loud. Proper safety gear must be always worn.  A standard 40-hour work week applies. 

E.M. Tharp is an equal opportunity employer that is committed to diversity and inclusion in the workplace. We prohibit discrimination and harassment of any kind based on race, color, sex, religion, sexual orientation, national origin, disability, genetic information, pregnancy, or any other protected characteristic as outlined by federal, state, or local laws.