Shop Mechanic

Job Summary

The Shop Mechanic performs diagnosis, maintenance, repairs, and inspections on the organization’s tractor trailers, units, and equipment; utilizes and interprets wiring diagrams to diagnose and repair all electrical equipment; and keeps detailed records of all maintenance activities.

• Perform diagnosis, maintenance, and repairs on tractors, trailers, units, and equipment.
• Repair tractor trailer engines, aftertreatment systems, fuel systems, HVAC, brakes, lights, 12V systems, and airbrake systems.
• Perform after‑repair inspections on equipment.
• Perform valve lash and engine brake adjustments.
• Utilize diagnostic tools and software to test engine performance and fuel systems.
• Follow manufacturer’s torque sequence to remove and replace fluid end packing, valves, seats, and stay rods.
• Remove and replace packing sleeves on Kerr fluid ends.
• Diagnose power end issues and failures; remove and replace pinion seal, rotary seal, pony rod seals, pony rods, and power end cross heads.
• Remove and replace injectors and injection sleeves.
• Install inspection covers with new gaskets.
• Drill out all broken bolts on power end frame and re‑tap if necessary.
• Program Common Powertrain Controller (CPC), Motor Control Module (MCM), and Aftertreatment Control Module (ACM).
• Troubleshoot derates and fault codes associated with aftertreatment or one‑box systems.
• Remove and replace aftertreatment systems (e.g., one‑box system, DPF filters).
• Utilize and interpret wiring diagrams to diagnose and repair all electrical systems.
• Perform basic wear‑and‑tear checks on equipment.
• Ensure equipment is cleaned and lubricated.
• Safely operate forklift and overhead hoist.
• Perform housekeeping duties and maintain a hazard‑free work environment.
• Accurately document and keep records of all maintenance activities.
• Perform miscellaneous clerical duties as needed.
• Safely drive a company vehicle day or night, on various road types, and in all weather conditions.
• Maintain compliance with Health, Safety, and Environmental (HSE) policies by attending required training sessions and safety meetings and by using proper PPE.
• Perform other duties as assigned.

• Experience performing maintenance on tractor trailers, electrical systems, commercial vehicles, power ends, and fluid ends.
• Valid driver’s license and clean driving record.
• Forklift operator certification or willingness to complete approved training.
• High‑school education or equivalent required; technical or Associate’s degree preferred.
• Basic knowledge of hydraulic fracturing equipment.
• Ability to properly install power end oil lube pressure pump and regulator.
• Ability to read and follow diagrams, manufacturer specifications, blueprints, and written instructions in English.
• Proficient knowledge of diagnostic tools and software (e.g., DETROIT DDDL, Cat ET, Cummins InSite).
• Air‑brake certification.
• Physical ability to safely perform a power end swing on a hydraulic fracturing pump using an overhead hoist.
• Basic computer skills and ability to quickly learn work‑related software (e.g., Microsoft Office 365, Power Bi).
• Good troubleshooting and problem‑solving skills.
• Personable, reliable, with a strong work ethic.
• Knowledge of and practice safe hand‑tool use.
• Physical ability to safely drive a company vehicle in all weather conditions.
• Availability to work a 14/7 shift, including days, nights, weekends, and holidays, with 12+ hour workdays.
• Physical ability to lift 50 lbs. and 25 lbs. above head without assistance.
• Physical ability to stand or sit for extended periods, stoop, kneel, twist, crawl, walk on uneven surfaces, and climb equipment ladders or stairs throughout the work shift.

The physical demands described here represent those required for an employee to successfully perform the role’s essential functions. Reasonable accommodation may be made for individuals with disabilities to perform their major responsibilities. While performing the duties of this job, the employee is regularly required to sit, stand, or walk; use hands to manipulate, handle, or feel; reach with hands and arms;

stoop or bend; and talk or hear. The employee must occasionally lift and/or move up to 50 lbs.