McKinley Armijo
Brighton,CO
Summary
Detail-oriented diesel mechanic with expertise in engine rebuilding, diagnostic equipment usage, and truck maintenance. Committed to delivering exceptional problem-solving and customer service. Hands-on diesel mechanic offering several years of experience completing inspection processes to identify worn out and defective parts and correcting vehicle deficiencies. Proficient in using job-related equipment such as precision instruments and pressure gauges. Bringing excellent work ethic and in-depth knowledge of latest technology. Certified Diesel Mechanic with practical experience in inspecting, repairing and maintaining diesel engines. Demonstrated ability to troubleshoot complex mechanical issues and perform routine maintenance on a variety of vehicles. Exhibited strength lies in hydraulic systems knowledge, preventative maintenance and diagnostic testing. Previous roles have resulted in increased efficiency within the repair team and reduced vehicle downtime.
Overview
19
19
years of professional experience
Work History
Diesel Mechanic
FedEx Freight
Henderson, CO
04.2025 - Current
- Inspected diesel engines and components for wear and damage to ensure reliability.
- Diagnosed mechanical issues using industry-standard tools, enhancing troubleshooting efficiency.
- Executed routine maintenance on trucks to optimize overall performance levels.
- Maintained precise records of repairs and maintenance tasks for future reference.
- Adhered to safety protocols while operating in a dynamic work environment.
Mobile Diesel Mechanic
Rush Truck Centers
Commerce City, CO
09.2021 - 04.2025
- Performed on-site diagnostics for various vehicle issues.
- Conducted routine maintenance and repairs for client vehicles.
- Utilized diagnostic tools to identify mechanical problems effectively.
- Communicated repair needs and solutions to clients clearly.
- Provided exceptional customer service in high-pressure situations.
- Conducted road tests to diagnose drivability concerns such as hard starts or stalls.
- Repaired electrical systems such as wiring harnesses, alternators, starters, power windows and locks, and lighting systems.
- Communicated effectively with customers regarding their vehicle's condition and any recommended additional services or repairs that may be necessary.
Diesel Mechanic
Marini Diesel Inc
Commerce City, Colorado
01.2018 - 08.2021
- Disassembled engines to assess and repair damaged components.
- Rebuilt engine parts using precision tools and machinery.
- Operated diagnostic equipment to identify problems in various engine types.
- Repaired or replaced defective engine components based upon diagnosis.
- Performed routine maintenance on shop tools and equipment.
- Adjusted valves for clearance and timing according to manufacturer's specifications.
- Assisted other technicians in the repair of complex engine problems.
- Conducted routine servicing on fuel, electrical and cooling systems.
Journeyman Diesel Mechanic
Cummins Inc
Henderson, Colorado
06.2006 - 12.2017
- Rebuilt engine parts using precision tools and machinery.
- Diagnosed engine issues by analyzing mechanical systems thoroughly.
- Repaired or replaced defective engine components based upon diagnosis.
- Tested rebuilt engines for performance on dynamometers or test stands.
- Utilized micrometers, calipers and gauges for precise measurements.
- Replaced worn or damaged parts such as pistons, bearings, valves, gaskets, and seals.
- Conducted routine servicing on fuel, electrical and cooling systems.
- Developed in-depth understanding of automotive systems and components to complete fast and accurate repairs.
- Maintained certifications and completed training on systems and components.
- Searched within service and maintenance manuals to perform repairs and diagnosis.
- Utilized infrared engine analyzers, compression gauges and computerized diagnostic devices to test vehicle components and systems.
- Trained and guided employees on correct methods for performing different repairs and maintenance services.
Education
Associate of Applied Science - Heavy Duty Powertrain And Suspension
Denver Automotive And Diesel College
Denver, CO06-2003
GED -
Emily Griffith Technical College
Denver, CO05-1996
Bachelor of Science - Business Administration
Mansfield Business College
Denver, CO06-1993
Skills
- Engine rebuilding
- Diagnostic equipment usage
- Truck maintenance
- Electrical system repair
- Route diagnostics
- Vehicle inspection
- Parts ordering
- Customer service
- Record keeping
- Attention to detail
- Team collaboration
- Problem solving
- Engine diagnostics
- Computer-assisted troubleshooting
- Electrical systems
- Brakes and tires
- Vehicle inspections
- Vehicle system analysis
- Diagnostic testing
- Brake systems
- Fuel system maintenance
- Exhaust systems
- Preventive Maintenance
Timeline
Diesel Mechanic
FedEx Freight
04.2025 - Current
Mobile Diesel Mechanic
Rush Truck Centers
09.2021 - 04.2025
Diesel Mechanic
Marini Diesel Inc
01.2018 - 08.2021
Journeyman Diesel Mechanic
Cummins Inc
06.2006 - 12.2017
Associate of Applied Science - Heavy Duty Powertrain And Suspension
Denver Automotive And Diesel College
GED -
Emily Griffith Technical College
Bachelor of Science - Business Administration
Mansfield Business College