Abel Diaz
Summary
Detail-oriented Maintenance and Heavy Line Diesel Technician with extensive experience in engine repair, diagnostics, and preventative maintenance. Expertise in troubleshooting diesel and gasoline engines, performing major repairs, and ensuring equipment reliability. Background as a Delivery Specialist enhances skills in time management and customer service while transporting parts. Adaptable and committed to maintaining high safety standards in fast-paced environments.
Overview
12
12
years of professional experience
Work History
Maintenance Technician
Mission Plastic
Ontario, California
10.2022 - 08.2025
- Diagnosed mechanical issues and performed repairs on machinery as needed.
- Coordinated with vendors for parts procurement and service support.
- Resolved emergency breakdowns promptly, ensuring minimal downtime during shifts.
- Repaired or replaced faulty wiring, switches, relays, and other electrical components.
- Replaced defective parts such as bearings, seals, gears, valves.
- Performed preventive maintenance tasks, including lubrication and cleaning of machines and equipment.
- Installed new systems, replacement parts, and components to maintain proper operation.
- Inspected grounds and buildings to identify, minimize and correct hazardous property conditions or liability concerns.
- Diagnosed mechanical problems using visual inspections and test instruments.
- Collaborated with building managers to identify needs and establish preventive maintenance schedules.
- Routinely inspected plant equipment for signs of wear or malfunctioning parts.
- Performed performance and safety inspections on equipment and machinery, ensuring operational standards were met.
- Installed new pumps, compressors, boilers and other mechanical systems.
- Performed routine maintenance by inspecting drives, motors or belts.
Heavy Line and Diesel Technician
Tom Bell
Fontana, California
09.2017 - 10.2022
- Conducted routine maintenance on diesel engines and related systems to ensure optimal performance and longevity.
- Repaired fuel injection systems, enhancing engine performance and fuel efficiency.
- Collaborated with team members to troubleshoot complex mechanical problems.
- Performed routine maintenance and repair services on diesel engines, including engine overhauls, fuel systems, cooling systems, exhaust systems, transmissions and clutches.
- Removed cylinder heads from engines for inspection or replacement of gaskets or valves.
- Repaired hydraulic hoses and lines according to manufacturer's specifications.
- Rebuilt diesel motors by replacing pistons, liners and other internal components.
- Dismantled fuel injection pumps and replaced defective seals or worn parts such as plungers and barrels.
Lube Service Technician
Rotolo Chevrolet
Fontana
01.2014 - 09.2017
- Performed routine oil changes and fluid checks for various vehicle models.
- Inspected engines and components for wear and potential issues.
- Advised customers on maintenance schedules and service recommendations to enhance vehicle longevity.
- Assisted technicians with repairs and part replacements.
- Employed diagnostic tools to evaluate vehicle performance and identify necessary repairs.
- Adhered to safety protocols while handling tools and materials.
- Checked fluid levels of transmission, power-steering, brake and cooling systems.
- Disposed of used motor oil and other hazardous materials in accordance with local regulations.
- Tested battery condition using a variety of diagnostic equipment.
- Performed oil changes, tire rotations, filter replacements, and other basic maintenance services on vehicles.
- Repaired or replaced worn out brakes and shock absorbers.
- Recorded detailed work performed on each vehicle to ensure compliance with shop policies and facilitate service tracking.
- Conducted visual inspections for signs of wear or damage in belts and hoses.
- Replaced cabin, fuel, air and oil filters and tested vehicle horn and lights.
- Drained motor oil changed oil filters and greased chassis fittings.
- Aligned wheels using special alignment equipment and wheel-balancing machines.
- Improved function of engines by replacing spark plugs, fuel filters and defective sensors.
- Used diagnostics and troubleshooting tools to identify failures and equipment issues.
- Repaired, replaced and adjusted brakes.
- Diagnosed and repaired basic automotive issues for brakes, alignments, suspensions, cooling and electrical systems.
Parts Delivery Specialist
Rotolo Chevrolet
Fontana
03.2013 - 01.2014
- Delivered automotive parts to technicians and service departments efficiently.
- Delivered parts to customers punctually, adhering to safety regulations while driving delivery vehicle.
- Organized inventory for quick access, ensuring timely delivery of parts.
- Collaborated with team members to streamline delivery processes effectively.
- Followed safety protocols while handling and transporting automotive components.
- Inspected orders before and after delivery to guarantee customer satisfaction.
- Resolved customer service complaints professionally, fostering trust and loyalty.
- Reported any damaged goods received from vendors immediately so that proper action could be taken.
Education
GED -
Rialto High School
05-2011
Skills
- Safety-oriented mindset
- Safety awareness
- System installations
- Electrical wiring
- Mechanical aptitude
- Plumbing repair
- Ventilation systems
- HVAC system maintenance
- OSHA
- Troubleshooting skills
- Effective communication
- Time management
- Attention to detail
- Problem solving
- Microsoft Office Suite
- Team collaboration
- Customer education
- Heavy Diesel and Associated Systems
Education and Training
other
Timeline
Maintenance Technician
Mission Plastic
10.2022 - 08.2025
Heavy Line and Diesel Technician
Tom Bell
09.2017 - 10.2022
Lube Service Technician
Rotolo Chevrolet
01.2014 - 09.2017
Parts Delivery Specialist
Rotolo Chevrolet
03.2013 - 01.2014
GED -
Rialto High School