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What Are the Duties of a Diesel Heavy Truck Technician?

Imagine a giant eighteen-wheeler roaring down the highway, carrying tons of goods. Or a massive excavator digging away at a construction site. These powerful machines run on diesel engines, and when they break down, someone needs to fix them. That someone is a diesel heavy truck technician.

So, what exactly do these technicians do? They tackle a wide range of tasks to keep those diesel giants running smoothly. Let’s dive into their daily duties.

Troubleshoot and Diagnose Problems:

First, a technician needs to figure out what’s wrong. When a truck driver reports a problem, the technician jumps into action. They listen to the driver’s description, check warning lights, and use diagnostic tools. Think of these tools like a detective’s magnifying glass – they help find the source of the problem.

  • Computer Diagnostics: Modern diesel trucks have complex computer systems. Technicians connect laptops or specialized scanners to these systems. The computers provide codes that point to specific issues, like a faulty sensor or a problem with the fuel injection.
  • Visual Inspections: They carefully look at the engine, transmission, brakes, and other components. They check for leaks, damaged parts, and worn-out components.
  • Testing Components: They use gauges and other testing equipment to measure pressure, voltage, and other values. This helps them determine if the parts are working correctly.

Repair and Replace Parts:

Once they find the problem, technicians get to work repairing or replacing the faulty parts. This can involve a variety of tasks:

  • Engine Repairs: They might replace fuel injectors, repair turbochargers, or overhaul the entire engine. This requires a strong understanding of how diesel engines work.
  • Transmission Repairs: They work on the gears and clutches that allow the truck to change speeds. This can involve rebuilding transmissions or replacing worn-out components.
  • Brake System Repairs: They check that the truck’s brakes are safe and effective. This could include replacing brake pads, rotors, and air lines.
  • Electrical System Repairs: They can fix wiring problems, replace batteries, and repair or install electrical components.
  • Hydraulic System Repairs: Many heavy trucks use hydraulic systems for lifting and moving heavy loads. They work on pumps, valves, and cylinders.

Perform Preventative Maintenance:

Technicians don’t just fix broken trucks; they can also prevent breakdowns. They perform regular maintenance, which includes:

  • Oil Changes: They drain the old oil and replace it with fresh oil to keep the engine lubricated.
  • Filter Changes: They replace air filters, fuel filters, and oil filters to keep the engine clean.
  • Inspections: They inspect major systems for wear and tear.
  • Lubrication: They grease moving parts to reduce friction and prevent wear.
  • Adjustments: They adjust valves, belts, and other components to confirm they are working properly.

Keep Detailed Records:

Technicians keep accurate records of the work they do. This helps track the history of the truck and identify recurring problems. They record:

  • The Problem: A description of the problem the truck was experiencing.
  • The Diagnosis: How they determined the cause of the problem.
  • The Repairs: What parts they repaired or replaced and what work they performed.
  • The Parts Used: A list of all the parts they used for the repair.
  • The Time Spent: How long it took to complete the repairs.

Use Tools and Equipment:

Diesel heavy truck technicians use a wide range of tools and equipment, including:

  • Hand Tools: Wrenches, screwdrivers, pliers, and other basic tools.
  • Power Tools: Air wrenches, drills, and grinders.
  • Diagnostic Equipment: Scanners, multimeters, and pressure gauges.
  • Lifting Equipment: Jacks, hoists, and cranes.
  • Welding Equipment: For repairing metal parts.

Work in a Variety of Environments:

Technicians work in a variety of environments, including:

  • Repair Shops: They work in garages or repair shops, where they have access to tools and equipment.
  • Dealerships: They work at dealerships that sell and service diesel trucks.
  • Fleets: They work for companies that own and operate a fleet of trucks.
  • On the Road: Sometimes they travel to job sites or to help stranded drivers.

Develop Important Skills:

To be successful, a diesel heavy truck technician utilizes a variety of skills, including:

  • Mechanical Aptitude: They need to understand how machines work.
  • Problem-Solving Skills: They need to be able to diagnose and solve problems.
  • Technical Skills: They need to be able to use diagnostic tools and repair equipment.
  • Communication Skills: They need to be able to communicate with drivers and other technicians.
  • Physical Stamina: They need to be able to lift heavy parts and work in physically demanding conditions.

Start Training for Your Career as a Diesel Heavy Truck Technician With STVT

Being a diesel heavy truck technician is a rewarding career. These skilled professionals play a vital role in keeping our transportation system running smoothly. They keep the massive machines that move our world in top shape.

Are you ready to start training for a career as a diesel heavy truck technician? Call us today at 866-480-9766 or submit this form for more information!

 

Blog Disclaimer: Information within this blog is for general information purposes only. STVT does not assume or guarantee certification/licensures, specific job/career positions, income earning potential, or salary expectations based on the programs offered at STVT. Career and program information statements in this blog do not guarantee that programs or other information mentioned are offered at STVT. STVT cannot guarantee employment or salary.