Theo Vance

• Lead diagnostics and repair for Cummins, Detroit, and PACCAR diesel engines across a 120-vehicle fleet, sustaining 96% uptime. • Complete 6–8 preventive maintenance and corrective repairs per day; reduced repeat work orders 18% through root-cause troubleshooting. • Perform DOT inspections, hydraulic brake service, electrical testing, and aftertreatment troubleshooting while maintaining a two-year record without a lost-time incident. • Coach four technicians on safe lockout/tagout, welding basics, and fleet CMMS documentation.

• Diagnosed and repaired diesel engines, transmissions, air systems, and hydraulic brakes on 75 transit buses, averaging 5 repairs per shift. • Executed preventive maintenance schedules and DOT safety inspections, improving on-time pullouts 14% over three years. • Used scan tools, wiring diagrams, and pressure tests to isolate faults; documented parts, labor, and inspection results in fleet CMMS. • Maintained a zero-violation safety record and supported emergency road calls during peak service periods.

• Assisted senior technicians with engine overhauls, brake jobs, driveline repairs, and preventive maintenance on Class 7–8 trucks and trailers. • Learned Cummins and Detroit service procedures, electrical diagnostics, welding basics, and safe shop practices. • Completed 3–4 work orders daily with accurate parts staging and documentation, helping cut bay turnaround time 10%. • Earned shop safety recognition for dependable workmanship and clean, organized work areas.

Hands-on training in heavy-duty diesel engines, electrical systems, hydraulics, brake systems, preventive maintenance, welding fundamentals, and DOT inspection procedures.