Diesel Technician

Wisconsin Country Staffing & Recruiting | Full time

Fond Du Lac, United States | Posted on 01/07/2026

Position Title: Diesel Technician
Department: Maintenance/Repair
Type: DIRECT HIRE
Location: Appleton, Wi
Employment Type: Full-Time
Salary Range:Based on Experience

Job Overview:

The Diesel Technician is responsible for diagnosing, repairing, and maintaining diesel engines and related equipment, ensuring optimal performance and reliability. This role requires technical expertise in diesel engines, mechanical systems, and various vehicle components. The ideal candidate will have experience working on trucks, heavy equipment, or other diesel-powered machinery and be committed to safety,precision, and high-quality service.

Key Responsibilities:

Diagnostic sand Repair:

• Diagnose mechanical, electrical, and hydraulic issuesin diesel-powered vehicles and equipment using diagnostic tools and software.
• Perform engine overhauls, transmission repairs, andbrake system repairs on diesel trucks, buses, and other heavy machinery.
• Troubleshoot issues related to fuel injection systems,turbochargers, cooling systems, and emissions control.
• Repair or replace defective parts such as alternators,fuel injectors, pistons, and cylinder heads.

Routine Maintenance:

• Perform routine preventative maintenance on diesel engines and components, including oil changes, filter replacements, tire rotations, and battery checks.
• Inspect equipment and vehicles for potential problems,addressing issues before they lead to major breakdowns.
• Test and calibrate engines and systems after repair or maintenance to ensure proper functionality and efficiency.

Safetyand Compliance:

• Ensure all repairs and maintenance comply with safety standards, manufacturer specifications, and local, state, and federal regulations.
• Follow OSHA safety guidelines, including the use of personal protective equipment (PPE) and proper handling of hazardous materials.
• Maintain a clean and safe work environment, adhering toall safety protocols in the shop or on-site.

Customer Service:

• Communicate effectively with customers or supervisors to explain repair needs, provide accurate cost estimates, and discuss maintenance recommendations.
• Ensure timely and high-quality repairs to minimize vehicle or equipment downtime for the customer.
• Keep detailed records of services performed, partsused, and time spent on each job for accurate billing and customer communication.
• Work closely with other technicians and shop personnel to ensure efficient workflow and quick turnaround times for repairs.
• Assist in mentoring and training junior technicians and apprentices as needed.
• Participate in ongoing technical training and certification programs to stay up-to-date with advancements in diesel technology.

Qualification sand

Skills:

• Experience:
• Experience as a diesel mechanic or technician workingon diesel engines and related systems.
• Experience with heavy-duty trucks, buses,agricultural, or construction equipment is a plus.
• Technical
  
  Skills:
  
  
• Strong knowledge of diesel engines, fuel systems, and mechanical components.
• Proficiency with diagnostic software and tools such as multimeters, engine analyzers, and pressure gauges.
• Familiarity with hydraulic, electrical, and air brake systems commonly found in diesel vehicles.
• Problem-Solving:
• Excellent troubleshooting and diagnostic skills toquickly identify and resolve engine or mechanical issues.
• Ability to work independently and efficiently manage time and resources to complete tasks.
• Communication:
• Strong verbal and written communication skills toexplain repairs and maintenance needs clearly to customers and team members.
• Ability to maintain accurate service records and documentation.
• Physical Requirements:
• Ability to lift heavy parts and equipment (up to 50lbs), stand for extended periods, and work in various physical positions(bending, kneeling, crawling).
• Willingness to work in all weather conditions, indoor sand outdoors, as needed for field service calls.

Education&

Certifications:

• High school diploma or equivalent required.
• Completion of a formal diesel technician training program or apprenticeship preferred.
• ASE (Automotive Service Excellence) certification in Diesel Engines or related fields is a plus.
• CDL (Commercial Driver's License) may be required forfield service.
• Valid driver’s license is required.
• Contingent on size of employer/WCSR may have more thanone opening

This job description provides a basic overview of the key duties and qualifications needed to apply.

The employer will provide detailed job expectations, company processes and procedures as well as company culture beyond this overview. WCSR believes thereis much more to an employer than its job description as a resume is to acandidate. We look forward to talking with you and the opportunity to advance your career. Career minded folks are encouraged to apply.