Diesel Technician: Troubleshoot & Maintain Heavy-Duty Fleet

County-Materials-Family-of-Companies; Astatula (FL); On-site; USD 42,000 - 64,000; Full time

Job summary

County Materials in Astatula, Florida is seeking a Diesel Technician with strong diesel engine experience to maintain and repair trucks and heavy equipment. The role ensures safe, reliable operation and DOT compliance for fleet assets.

The candidate will diagnose mechanical, hydraulic, and pneumatic systems, perform PMs and inspections, and respond to breakdowns to minimize downtime. Reading manuals and documenting repairs are essential, along with safety and quality adherence.

Qualifications

• Minimum of 2 years of diesel mechanics experience.
• Valid driver's license required.
• CDL preferred.
• Strong diagnostic and repair skills.
• Ability to read technical manuals and schematics.

Responsibilities

• Troubleshoot, diagnose, and repair diesel engines, trucks, and heavy-duty equipment.
• Perform mechanical, hydraulic, and pneumatic repairs as needed.
• Complete preventative maintenance (PMs) and DOT inspections.
• Respond to emergency and unscheduled equipment breakdowns to reduce downtime.
• Read and interpret technical manuals, schematics, and service documentation.
• Operate, maintain, and inspect shop tools and equipment.
• Follow all safety procedures, regulatory requirements, and quality standards.
• Accurately document repairs, inspections, and maintenance activities; support team operations.
• Use hand and power tools, material handling equipment, welders, and cutting torches.
• Maintain a clean, organized, and safe work area.
• Perform other related duties as assigned.

Skills

Diesel Systems

Mechanical Skills

Pneumatic Systems

Diagnostics

Troubleshooting

Preventative Maintenance

Documentation

Tool Usage

Welding

Communication

Attention to Detail

Reading Schematics

Job description

County Materials in Astatula, Florida is seeking a Diesel Technician with strong diesel engine experience to maintain and repair trucks and heavy equipment. The role ensures safe, reliable operation and DOT compliance for fleet assets.

The candidate will diagnose mechanical, hydraulic, and pneumatic systems, perform PMs and inspections, and respond to breakdowns to minimize downtime. Reading manuals and documenting repairs are essential, along with safety and quality adherence.