Fleet Mechanic II: Diesel Diagnostics & PM

Reladyne; Long Beach (CA); On-site; USD 49,593 - 50,971; Full time

Benefits offered by this job

Competitive pay

401(k) with company match

Paid time off and holidays

Career growth opportunities

Safety-focused team environment

Job summary

RelaDyne is seeking a skilled Mechanic II to maintain a fleet of diesel trucks, trailers, and related equipment. You will perform preventive maintenance, diagnose and repair mechanical issues, and work with senior technicians on complex diagnostics and major repairs.

The role requires 2–4 years of experience with diesel/heavy‑duty vehicles, a valid driver’s license, and the ability to document maintenance activities accurately.

Qualifications

• High school diploma or equivalent.
• Two to four years of experience maintaining and repairing diesel or heavy‑duty vehicles.
• Knowledge of diesel engines, air brake systems, electrical systems, and hydraulics.
• Ability to diagnose and complete intermediate‑level repairs with minimal supervision.
• Valid driver’s license.

Responsibilities

• Perform preventive maintenance, including oil changes, filter replacements, inspections, and fluid services.
• Diagnose and repair diesel engines, electrical systems, air brakes, steering, suspension, and hydraulic systems.
• Inspect vehicles and equipment to identify maintenance and safety concerns.
• Assist with maintenance and repairs of fuel systems and pumps (training provided).
• Complete repairs efficiently while maintaining high‑quality workmanship.
• Work alongside senior mechanics on complex diagnostics and major repairs.
• Accurately complete work orders, maintenance records, and inspection reports.
• Follow all DOT, OSHA, and company safety policies and procedures.
• Maintain a clean, organized, and safe work environment.
• Respond to roadside service calls as needed.
• Participate in ongoing training to stay current on equipment and industry best practices.
• Perform other duties as assigned to support fleet operations.

Skills

Diesel engines

Air brakes

Electrical systems

Hydraulics

Diagnostics and repairs

Valid driver's license

Education

High school diploma or equivalent

Job description

RelaDyne is seeking a skilled Mechanic II to maintain a fleet of diesel trucks, trailers, and related equipment. You will perform preventive maintenance, diagnose and repair mechanical issues, and work with senior technicians on complex diagnostics and major repairs.

The role requires 2–4 years of experience with diesel/heavy‑duty vehicles, a valid driver’s license, and the ability to document maintenance activities accurately.