Field Service Mechanic - Diesel, Hydraulics, Utility Trucks

Custom Truck One Source•Alvarado, TX
•Onsite

About The Position

Custom Truck One Source (CTOS) is seeking a Field Service Mechanic to diagnose and repair specialized utility equipment in the field. This role involves working on a variety of vehicles including bucket trucks, digger derricks, cranes, and service trucks. The primary responsibility is to perform vehicle troubleshooting, repair, and maintenance on chassis and track-mounted aerials, digger derricks, cranes, high rail, and other equipment, in accordance with dealer and factory standards. The position requires the ability to work independently, interpret manuals, perform diagnostic tests, and maintain accurate records. The mechanic will also be responsible for adhering to safety regulations and communicating effectively with customers and internal departments to minimize equipment downtime.

Requirements

  • Valid driver’s license
  • Good driving record
  • Willingness to work overtime and travel as needed
  • High School diploma or GED
  • Five years of related experience (Shop Tech and Field Tech)
  • Must hold a valid driver’s license (CDL Class B preferred)
  • Must have your own tools
  • Proficient in documentation using software, meeting deadlines and schedules
  • Ability to regularly work in outside weather conditions, including wet and/or humid conditions
  • Occasionally exposed to extreme cold, and extreme heat
  • Positive attitude, professionalism, Punctual attendance
  • Physical capability for lifting, carrying, pushing, and pulling
  • Ability to bend, stoop, and lift up to 50 lbs
  • Comfort with heights and manual labor
  • Manual dexterity for operating tools and equipment
  • Authorized to work in United States without the need for sponsorship

Nice To Haves

  • Electrical, schematic / blueprints, hydraulic, welding, and related experience
  • Experience with Quick Serve, DTNA, or related diagnostic software
  • DOT, ANSI, and Dielectric testing desired
  • CDL Class B

Responsibilities

  • Serve as the field expert diagnosing and repairing specialized utility equipment
  • Work on bucket trucks, digger derricks, cranes, service trucks, and related equipment
  • Diagnose, repair, and maintain aerial, construction, and light/heavy-duty truck systems
  • Perform inspections, troubleshooting, parts replacement, and repairs on rental, customer, and company units
  • Read and interpret equipment manuals and repair orders/instructions to perform required maintenance and service
  • Utilize laptop to access needed information and perform diagnostic tests
  • Diagnosis and repair LMI Diagnostics (Load Moment Indicator) and CAN bus (Controller Area Network)
  • Inspect and service vehicles and make repairs and adjustments both at the service center and in the field
  • Verify work performed, road test vehicles as necessary
  • Prepare inspection reports, repair orders (recording service time and parts costs) and timecards completely and accurately
  • Tag all warranty and core parts for return
  • Advise management immediately if additional work is needed, if work outlined is not needed, or if repairs cannot be completed within the time promised
  • Attend CTOS safety training and follow all safety requirements
  • Attend CTOS and factory-sponsored training classes
  • Understand and follow federal, state and local regulations such as those governing the disposal of hazardous wastes
  • Communicate easily with customers and internal departments to ensure minimal equipment downtime
  • Flexibility to travel beyond the area of coverage, based on business need
  • Work closely with Service Manager to grow and improve customer satisfaction
  • Perform additional duties or responsibilities as designated by the Service Manager

Benefits

  • 401(k) with Employer Match
  • Competitive Health Care including Dental, Vision, and Life Insurance
  • Company paid health and wellness programs
  • Paid Vacation, Sick and Holidays
  • STD/LTD
  • Partner Discounts (Tool Discount Programs)
  • Investment in Employee Development
© 2026 Teal Labs, Inc
Privacy PolicyTerms of Service