Mobile Diesel/Trailer Technician

About the role

Department: Paragon Fleet Maintenance Group

Job Summary

The Mobile Diesel/Trailer Technician performs preventive maintenance, inspections, diagnostic testing, and general and complex repairs on company and contractor trucks, trailers, auxiliary power units, and refrigeration equipment. Supported equipment may include Peterbilt, Kenworth, Freightliner, Utility, Thermo King, and Carrier products. This role travels to or works at assigned service locations in the Dodge City, Kansas area and helps ensure equipment meets applicable safety and U.S. Department of Transportation requirements.

Key Responsibilities

• Perform scheduled and non-routine repairs on company and contractor fleet equipment in accordance with applicable DOT and company standards.
• Diagnose and repair diesel engines, suspension and steering systems, air and hydraulic braking systems, electrical systems, lighting systems, and complex cooling systems.
• Diagnose and repair auxiliary power units, air-conditioning components, compressors, wheel seals, and water pumps.
• Perform trailer body repairs, including liners, landing gear, top rails, side rails, door posts, and H-frames.
• Diagnose and repair Thermo King and Carrier refrigeration systems and retrofit refrigeration units when assigned.
• Perform preventive maintenance on tractors and trailers, including oil changes, battery checks, lubrication, inspections, and related repairs.
• Replace and repair tires using applicable safety procedures.
• Document inspections, diagnostics, repairs, parts usage, and maintenance activities accurately and timely.
• Order parts, monitor inventory, and coordinate professionally with vendors and internal or external customers.
• Maintain a clean, organized, and safe service vehicle, shop, and work area; follow safety procedures and use required personal protective equipment.
• Perform other job-related duties as assigned.

Minimum Qualifications

• Demonstrated experience diagnosing and repairing heavy-duty diesel trucks and trailers in a commercial fleet, dealership, or similar maintenance environment.
• Experience with trailer mechanical and body repairs and commercial refrigeration systems, or an equivalent combination of relevant training, certifications, and work experience.
• Working knowledge of telematics systems and diagnostic software.
• Ability to use standard business software to complete work orders, communicate, and maintain records.
• Ability to read and understand safety procedures, operating manuals, service manuals, work orders, and technical documentation, and to communicate maintenance information effectively.
• Ability to perform basic math calculations used in maintenance and inventory activities.
• Valid driver license required because the position operates and moves vehicles or equipment as an essential job duty.
• Must possess, or be able to obtain, the basic tools required for assigned job functions.

Preferred Qualifications

• Approximately five or more years of progressively responsible heavy-duty diesel and trailer maintenance experience.
• Thermo King or Carrier refrigeration repair experience or certification.
• Cummins or Detroit training or certification.
• Commercial vehicle inspection certification.
• Experience with vendor or customer relations and parts inventory management.

Skills and Abilities

• Diesel engine diagnosis and repair, including familiarity with Cummins X15 and Detroit DD15 engines.
• Preventive maintenance and mechanical repair of tractors, trailers, braking systems, steering, suspension, electrical, lighting, and cooling systems.
• Trailer body repair, including liners, landing gear, rails, door posts, and H-frames.
• Electronic diagnostics, diagnostic software, and telematics systems.
• Safe and effective use of hand tools, power tools, shop equipment, and personal protective equipment.
• Organization, inventory control, documentation, customer service, and professional communication.

Work Experience

Relevant heavy-duty diesel and trailer maintenance experience sufficient to perform the essential duties independently. Experience equivalent to approximately five years is preferred; equivalent technical training, military experience, certifications, or related work experience may be considered.

Education

High school diploma or equivalent is preferred. Relevant technical school training, apprenticeship, industry certification, military training, or equivalent practical experience is valued.

Physical Demands and Work Environment

• Frequently maneuver around, inside, on, and under trucks and trailers and work in tight spaces to inspect, diagnose, and repair equipment.
• Frequently stand, bend, squat, kneel, crawl, push, pull, reach, and use hands to handle, control, or feel tools and components.
• Climb ladders, stairs, and platforms using applicable fall-protection and safety procedures.
• Lift and carry up to 50 pounds. Use team lifting or mechanical assistance when appropriate and available.
• Work in indoor and outdoor environments that may involve heat, cold, noise, moving equipment, grease, fumes, and other conditions typical of fleet maintenance operations.
• Travel locally to service locations and respond to mobile repair assignments as scheduled.