Diesel Technician

Wisconsin Country Staffing & Recruiting | Full time

Oshkosh, United States | Posted on 08/06/2026

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

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.

• 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.

• 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.

• 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.

• 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.

• 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…