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Mobile Diesel & Trailer Mechanic II

Job in Mesa, Maricopa County, Arizona, 85201, USA
Listing for: Cox Enterprises Inc
Full Time position
Listed on 2026-01-24
Job specializations:
  • Trades / Skilled Labor
    Diesel Mechanic, Heavy Equipment Mechanic
Job Description & How to Apply Below
Cox Fleet is currently hiring a
** Mobile Diesel & Trailer Technician
** will be responsible for performing licensed DOT inspections, Preventative Maintenance inspections, light and follow-up repairs, light mechanical/hydraulic/electrical and electronic diagnostics, and other duties as assigned.  The Mobile Diesel & Trailer Technician can perform more advanced diagnostics and repairs under the supervision of a Sr Mobile Diesel Technician or higher. The Diesel & Trailer Technician continues to learn additional advanced mechanical skills and diagnostic techniques.  

A successful Diesel & Trailer Technician complies with all company policies and achieves high level performance metrics.
* Perform scheduled preventative maintenance (“PM”), DOT Inspections and follow up repairs on light, medium and heavy-duty vehicles in a mobile/field environment.
* Perform minor adjustment and repairs on various types of truck equipment including, but not limited to the following:
Electrical/Brake/Cooling Systems, Starters/Alternators, Fan clutches, Engine electronics, Diesel steering systems, Engines (gas and diesel), Transmissions (manual and automatic), Clutches, Differentials, etc.
* Perform minor adjustment and repairs on various types of trailers equipment and systems including, but not limited to the following:  aluminum and chem-lite, trailer brakes, air lines, auxiliary pumps and engines, liftgates, and brake chambers
* Diagnose, adjust, and repair various types of truck equipment including, but not limited to the following:
Electrical/Brake/Cooling Systems, Starters/Alternators, Air conditioning systems, Fan clutches, Engine electronics, Diesel steering systems, Engines (gas and diesel), Transmissions (manual and automatic), Clutches, Differentials, etc.
* Diagnose, adjust, and perform repairs on various types of trailer equipment, and systems including, but not limited to the following: aluminum and chem-lite, trailer brakes, air lines, auxiliary pumps and engines, liftgates, brake chambers, welding, fabrication, replacement of panels, body, and framework.
* Inspect, test, and listen to defective equipment to diagnose malfunctions, using test instruments such as handheld computers and pressure gauges.
* Road test vehicles to diagnose malfunctions and to ensure that they are working properly.
* Identify problems, determine accuracy and relevance of information, using sound judgment to generate and evaluate alternatives.
* Independently manage parts inventory and equipment provided on company-issued service truck and perform periodic reconciliation.
* Maintain and operate company-issued service vehicle, conduct safety checks, and pre-/post-trip inspections of vehicle.
* Work with and listen effectively to clients and customers to assess their needs, providing information or assistance, resolving their problems, or satisfying their expectations.
* Manage concurrent assigned tasks, making effective judgments as to prioritizing work related activities and time allocations.
* Use hand tools, precision instruments, as well as Diesel tools, welding equipment, lift and jacks.
* Document according to company standards and upload pictures of work performed, parts used, and all findings observed on Repair Orders (“RO”) using company-issued iOS device and our proprietary TRAIT application.
* Accurately complete DOT forms and all other forms of documentation in a timely fashion.
* Work with a high degree of independence and manage own daily schedule.
* Maintain a high level of productivity and be able to work within or close to most Standard Repair Times.
* Obtain parts from approved local and national vendors as necessary for the repairs to be performed.
* Communicate with management and support team via email or phone to obtain approvals on repair estimates, retrieve purchase order numbers and/or discuss RO findings notes.
* Perform all work in compliance with organizational safety, health and environmental policies, and federal regulations, to include OSHA, EPA, and DOT.
* Maintain company issued service truck, conduct safety checks and daily pre/post trip inspections.
* High School Diploma/GED and 3 years’ experience in a related…
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