Summary
Overview
Work History
Education
Skills
Additional Schooling
References
Timeline
Generic

Jacob Lancaste

Sublette,IL

Summary

Dedicated Diesel Technician with extensive experience in maintenance and repair of diesel engines. Strong problem-solving skills and comprehensive knowledge of diesel systems contribute to improved operational efficiency and customer satisfaction. Proficient in handling diverse equipment to meet job requirements effectively.

Overview

21
21
years of professional experience

Work History

Diesel Technician

Walmart
Spring Valley , IL
03.2008 - 09.2025
  • Inspected diesel engines for wear and damage.
  • Assisted in repairing diesel fuel systems and components.
  • Maintained tools and equipment for optimal performance.
  • Followed safety protocols during maintenance and repair tasks.
  • Documented service records and maintenance logs accurately.
  • Supported troubleshooting of mechanical issues on various vehicles.
  • Inspected vehicles for damage and performed repairs when necessary.
  • Removed malfunctioning parts and repaired components or installed new ones.
  • Performed routine maintenance and repair services on diesel engines, including engine overhauls, fuel systems, cooling systems, exhaust systems, transmissions and clutches.
  • Checked and replaced clamps, brackets, hoses and other system components.
  • Maintained accurate records of all work completed so that future technicians could easily access information about previous repairs.
  • Read job orders and observed and listened to vehicles in operation to determine malfunctions and plan work procedures.
  • Replaced worn out parts such as injectors, pumps, air filters, spark plugs and belts.
  • Conducted regular inspections of vehicles to identify any potential safety risks before they become major problems.
  • Diagnosed and performed accurate repair on brakes, engines, suspensions, drive trains and transmission clutches.
  • Repaired hydraulic hoses and lines according to manufacturer's specifications.
  • Performed warranty service and filed all paperwork.
  • Diagnosed and repaired electrical problems in diesel engines using specialized diagnostic tools.
  • Checked fan belts for wear or tension issues and replaced them if necessary.
  • Utilized vehicle computer electronics systems to interpret failure modes to initiate or assign repairs.
  • Conducted successful road service for remote breakdowns and verified safe and operational return of company's equipment.
  • Resealed oil pans after changing oil filters or performing other related services.
  • Maintained current working knowledge of factory technical bulletins and productively responded to customer inquiries.
  • Used tools and technologies to log, research and complete repairs.
  • Assisted shop personnel and helped create cohesive and well-rounded technical environment centered around customer service, teamwork, and learning.
  • Monitored emissions levels during testing procedures to ensure compliance with environmental regulations.
  • Partnered with manager to learn new skills using technician training and hands-on coaching.
  • Examined protective guards, loose bolts and safety devices on trucks to make adjustments.
  • Used manual and computer- assessed diagnostic devices to test equipment and determine repair needs.
  • Optimized brake systems by adjusting and replacing components.
  • Raised trucks, buses and heavy parts or equipment with hydraulic jacks or hoists.
  • Completed in-depth inspections of vehicle brakes, steering and other systems to check for safety and performance issues.
  • Repaired and serviced air conditioning, heating and electrical systems.
  • Completed standard inspections to assess wear and damage to vehicles.
  • Completed simple and advanced repairs according to specifications for brakes, exhaust and electrical systems.
  • Removed old oil, replaced filters, and added correct amounts of fluids.
  • Checked vehicle mileage and determined necessary belts, fluids flushing or gasket replacements.
  • Reviewed brakes and assessed whether pads needed replacement, discs should be turned or other service requirements.
  • Ran diagnostics on heating and cooling systems to trace faults and completed skilled repairs.
  • Rewired ignition systems, lights and instrument panels.
  • Improved function of engines by replacing spark plugs, fuel filters and defective sensors.
  • Utilized electronic testing equipment to troubleshoot fuel, ignition and emissions control systems.
  • Conducted visual inspections of compressed natural gas fuel systems to identify cracks, discoloration and abrasions.
  • Read and interpreted standards, drawings and blueprints and pinpointed inspection needs for repair work.
  • Disassembled units and inspected parts for wear with micrometers, calipers and gauges.
  • Verified dimensions and clearances of parts to achieve conformance to factory specifications.
  • Tested electronic computer components in automobiles to determine proper operation.

Diesel/Auto Technician

Sycamore Truck Center
Sycamore, IL
01.2005 - 02.2008
  • Diagnosed mechanical issues in trucks using diagnostic tools and equipment.
  • Performed routine maintenance on diesel engines and hydraulic systems.
  • Repaired and replaced faulty components including brakes, transmissions, and exhaust systems.
  • Collaborated with service advisors to assess customer needs and recommend repairs.
  • Maintained a clean and organized work environment in compliance with safety standards.
  • Utilized computerized maintenance management systems for tracking service records.
  • Installed new tires on customer vehicles following manufacturer's guidelines for size and pressure ratings.
  • Performed routine maintenance and repair services on vehicles, including oil changes, tire rotations, brake repairs, and engine tune-ups.
  • Completed necessary paperwork for each job accurately and efficiently according to company policy.
  • Operated lift equipment safely in order to raise vehicles off the ground during inspection or repair activities.
  • Maintained accurate records of all service performed on customer vehicles.
  • Inspected and tested vehicle systems to ensure proper operation.
  • Replaced defective parts such as spark plugs, air filters, fuel injectors, and alternators.
  • Reviewed work orders to determine the nature of problems reported by customers before beginning repairs.
  • Repaired or replaced worn belts, hoses, brakes, radiators, starters, and other components as needed.
  • Utilized shop manuals for reference when diagnosing complex problems with engines or transmissions.
  • Provided excellent customer service by addressing customer inquiries promptly and professionally.
  • Followed manufacturer guidelines when replacing parts or making adjustments on customer vehicles.
  • Troubleshot electrical systems to isolate faults in wiring harnesses or other components.
  • Cleaned and lubricated chassis components such as steering linkage assemblies and universal joints.
  • Adhered strictly to safety regulations while performing auto repairs or servicing vehicles.
  • Demonstrated a thorough understanding of various makes and models of cars through ongoing training courses.
  • Completed repairs and maintenance to major vehicle models to meet safety specifications.
  • Removed, replaced, balanced and rotated new or used tires to maintain on-road safety
  • Repaired engines and transmissions, providing labor and parts cost breakdowns for work performed.
  • Utilized infrared engine analyzers, compression gauges and computerized diagnostic devices to test vehicle components and systems.
  • Welded, soldered and fabricated parts to complete skilled services.
  • Interpreted drawings and schematics to pinpoint sources of mechanical issues.
  • Monitored shop equipment to maintain safe working condition.
  • Conducted routine servicing on fuel, electrical and cooling systems.
  • Tested engine, safety and combustion control standards to comply with state vehicle requirements.
  • Developed in-depth understanding of automotive systems and components to complete fast and accurate repairs.
  • Cooperated with other technicians from different disciplines to achieve optimal integration.
  • Searched within service and maintenance manuals to perform repairs and diagnosis.
  • Repaired, replaced and adjusted brakes.
  • Performed maintenance inspections, tune-ups, oil changes and other key services.
  • Removed old oil, replaced filters, and added correct amounts of fluids.
  • Conducted test drives before and after repair services.
  • Checked vehicle mileage and determined necessary belts, fluids flushing or gasket replacements.
  • Improved function of engines by replacing spark plugs, fuel filters and defective sensors.
  • Adjusted and repaired systems to meet manufacturers' performance specifications.
  • Conferred with customers to obtain descriptions of vehicle problems and discuss work or future repair requirements.
  • Reviewed brakes and assessed whether pads needed replacement, discs should be turned or other service requirements.
  • Tested components and systems using infrared engine analyzers, compression gauges and computerized diagnostic devices.
  • Completed simple and advanced repairs according to specifications for brakes, exhaust and electrical systems.

Education

High School Diploma -

Ashton High School
Ashton, IL
05-2003

Skills

  • Engine rebuilding
  • A/C troubleshooting
  • Brake inspection
  • Diesel diagnostics
  • Emission compliance
  • Vehicle inspection
  • Utilized Walmart's plow truck and tractor for snow removal
  • I have my own tractor that I use to mow my property and grate my own driveway
  • Use stand-up and sit-down forklifts
  • Use a skid steer for digging, leveling gravel and dirt, and plowing
  • Use a dump trailer for hauling and spreading gravel, sand, and dirt
  • Use a flatbed trailer for hauling cars, motorcycles, and skid steers

Additional Schooling

  • Currently registered in Kishwaukee Community Collage for CDL training.

References

References available upon request.

Timeline

Diesel Technician

Walmart
03.2008 - 09.2025

Diesel/Auto Technician

Sycamore Truck Center
01.2005 - 02.2008

High School Diploma -

Ashton High School

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