Diesel Technician III

Knight’s Companies•Columbia, SC

About The Position

Knight’s Companies is seeking a Diesel Technician Level III to help ensure the safe, reliable, and efficient operation of a diverse fleet of vehicles and heavy equipment. This role performs maintenance, diagnostics, and repairs in the shop and at off-site locations, and provides guidance and support to Diesel Technicians I and II. The technician works closely with the Area Fleet Manager to maintain shop workflow and contributes to a collaborative, safety-focused environment.

Requirements

  • Valid driver’s license.
  • At least 5 years of maintenance experience or mechanical ability, unless qualified through an automotive or diesel technology diploma from an accredited technical school.
  • Ability to operate a manual-transmission vehicle to determine whether it is operating properly.
  • Must provide own hand tools and toolbox.
  • Knowledge of handheld scanning tools and vehicle diagnostic processes.
  • Ability to read schematics and familiarity with the process.
  • Computer skills, including knowledge of Excel, Word, fleet management systems, and email.
  • Strong written and verbal communication skills for documentation and communication with peers and supervisors.
  • Ability to lift at least 50 lbs. from floor to waist height and carry at least 50 lbs. over a 5-foot span.
  • Ability to push or pull at least 50 lbs. across a 10-foot span and lift at least 20 lbs. from waist to shoulder.
  • Ability to use hands to handle, control, or feel objects, tools, or controls.
  • Ability to stand for extended periods, bend or twist without restriction, and kneel, stoop, crouch, or crawl.
  • Ability to work in extreme weather, including high heat, low temperatures, and high sun environments.

Nice To Haves

  • High school diploma or GED.
  • Automotive or diesel technology diploma from an accredited technical school.
  • ASE certifications.
  • Commercial Driver’s License, Class A or B.

Responsibilities

  • Change and repair tires according to manufacturer specifications.
  • Perform oil and filter services on automobiles, concrete trucks, tractor-trailers, front-end loaders, and other equipment.
  • Diagnose and repair electrical systems, from auxiliary components such as lights and switches to 12V and 24V systems on fleet trucks and heavy machinery.
  • Assess and maintain power and hydraulic systems to ensure proper operation and safety.
  • Assist and guide Diesel Technicians I and II, supporting teamwork and knowledge sharing.
  • Maintain accurate records of maintenance and repairs.
  • Follow safety protocols and complete work in compliance with industry standards and regulations.
  • Make service calls to diagnose and repair off-site trucks and equipment using a company service vehicle.
  • Travel to plant facilities and vehicle locations to provide on-site repairs.
  • Diagnose and repair universal joints, slip joints, drive-shaft support bearings, air and hydraulic brake systems, and pressurized water systems.
  • Work with the Area Fleet Manager to maintain positive workflow throughout the shop.

Benefits

  • Competitive pay.
  • Medical, dental, and vision insurance.
  • Paid time off and paid holidays.
  • 401(k) with company match.
  • Short-term disability and long-term disability.
  • Company-paid life insurance.
  • Voluntary insurance programs, including life, critical illness, hospitalization, accident, and pet insurance.
  • Supportive work environment and opportunities for growth.
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