Summary
Overview
Work History
Education
Skills
Affiliations
Timeline
Generic

Alfred Martinez

Lytle,TX

Summary

Mechanic with extensive hands-on experience on external diesel engine with the Cummins ISX 15 up to injector replacement. Proficient in after treatment system, air brakes, front end steering/suspension, clutch & differential replacement and much more. Familiar with Detroit Diesel Series 60. Self motivated Mechanic III proficient in problem solving complex repair issues while consistently delivering quality work. A 23 year back ground in automotive / semi-truck testing, specializing in tire testing under a quality independent testing company.

Overview

13
13
years of professional experience

Work History

Mechanical Technician

Old Dominion Freight Line
San Antonio, Texas
10.2020 - 09.2025
  • 90% of the time performed routine maintenance on a fleet of single drive axle semi-trucks. Mostly Freightliner, with some Kenworth, International, and Volvo. Performed valve adjustments. Replaced radiators, brakes, wheel seals and tires.

Mechanical III

M Company Tranport Inc
Atascosa, TX
08.2019 - 04.2020

Preformed Cat C-15 in-frame overhaul and Cat C-15 complete overhaul. Performed scheduled valve adjustments. Replaced Cummins ISX-15 camshaft. Serviced air conditioning / heating. Located and repaired electrical shorts. Performed scheduled maintenance on semi-tractor. Replaced numerous differentials & steering gear boxes.

Mechanic II

SkyLine Transport Group
Von Ormy, TX
08.2017 - 08.2019

Serviced air conditioning, heating, engine-cooling and electrical systems. Worked on semi-trucks, crude and Hydrochloric acid tankers. Installed "Wet kits". Hydraulic PTO / Roper pumps. Replaced numerous differentials. Replaced radiators and water pumps. Serviced brakes and fuel systems. Preformed preventive maintenance on truck and trailer. Fabricated numerous brackets using welder, torch, etc. Mounted and replaced tires.

Mechanic II

Rose Rock Midstream L.P
Pearsall, TX
10.2015 - 08.2017

Serviced air conditioning, heating, engine-cooling and electrical systems. Worked on a variety of vehicles including semi-trucks & crude trailers. Repaired hydraulic pumps to an extent. Replaced numerous differentials. Replaced radiators and water pumps. Serviced brakes and fuel systems. Preformed preventive maintenance on truck and trailer. Mounted and replaced tires.

Mechanic II

Chalk Mountain Services
Pleasanton, TX
02.2015 - 10.2015

Worked on a variety of vehicles including semi-truck, sand & water trailers and vacuum trucks. Repaired and replaced radiators and water pumps. Serviced air conditioning, heating, engine-cooling and electrical systems. Replaced numerous clutch assemblies and transmission swaps. Serviced brakes and fuel systems. Preformed preventive maintenance on truck and trailer. Mounted and replaced tires.

Mechanic I to Mechanic II

Oil Field Trucking Solutions
Pearsall, TX
10.2012 - 02.2015

Worked on a variety of vehicles including semi-truck, crude & water trailers and vacuum trucks. Repaired and replaced radiators and water pumps. Serviced air conditioning, heating, engine-cooling and electrical systems. Serviced brakes and fuel systems. Preformed preventive maintenance on truck and trailer.

Education

High School Diploma -

Lytle High School
Lytle, Texas, United States

Skills

  • Diagnosis and repair
  • Suspension and steering
  • Electrical systems
  • Clutch replacement
  • Differential replacement
  • Air brake systems
  • Brake repair and replacement
  • Hydraulic equipment
  • Preventive maintenance
  • After treatment system
  • Caterpillar C15 in-frame / overhaul
  • Cummins ISX15 camshaft replacement
  • Overhead valve adjustments

Affiliations

While in the testing industry I worked closely with engineers of Detroit Diesel, Mercedes, Michelin, Goodyear and Chrysler. Reporting sensitive data in a professional and timely manner. Managed a 4 tractor/trailer tire test in Phoenix Az for close to 3 years while overseeing 12 drivers. Handled schedules, time cards, expense reports, etc.

Timeline

Mechanical Technician

Old Dominion Freight Line
10.2020 - 09.2025

Mechanical III

M Company Tranport Inc
08.2019 - 04.2020

Mechanic II

SkyLine Transport Group
08.2017 - 08.2019

Mechanic II

Rose Rock Midstream L.P
10.2015 - 08.2017

Mechanic II

Chalk Mountain Services
02.2015 - 10.2015

Mechanic I to Mechanic II

Oil Field Trucking Solutions
10.2012 - 02.2015

High School Diploma -

Lytle High School

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