Mitch Dumas

Professional mechanic with hands-on experience in diesel engine maintenance and repair. Skilled in diagnostics, troubleshooting, and preventative maintenance. Strong collaboration with team members to ensure efficient operations and adapt to changing needs. Known for reliability, technical expertise, and achieving results in high-pressure environments.

Diesel Mechanic at Sunroc/Suncore (2024-08 – 2026-06) • Troubleshoot check engine light, after treatment issues, electrical repair, A/C repair • Build hydro hoses in house • Test drive with drivers • Diagnose and repair drive train problems, hydraulic issues, coolant leaks, oil leaks, transmission problems, steering gears, PTOs, and rear ends • Order parts and look up OEM and engine diagrams • Experience with construction equipment: D6 Dozer, D8 Dozer, Skid Steers, Excavators, and repairs on light and medium duty trucks Diesel Mechanic at Eckles Paving (2023-06 – 2024-07) • Perform major in frame and out of frame overhauls on all makes/models of Cummins and Caterpillar engines from electronic to mechanical • Troubleshoot and repair hydraulic leaks, performance issues, check engine lights, electrical problems, after treatment systems, oil leaks, rear ends and hydraulic drives • Perform maintenance on pickups, medium and heavy duty trucks • Maintain service schedules, records and order parts Diesel Mechanic at Busy Bee Concrete / Castle Rock Precast (2022-01 – 2023-06) • Maintain service schedules, records and order parts • Troubleshoot and repair hydraulic leaks, performance issues, check engine lights, electrical problems, after treatment systems, oil leaks, rear ends and hydraulic drives • Perform maintenance on pickups, medium and heavy duty trucks, loaders, skid steers, and trailers Diesel Mechanic at TNT General Contractors (2021-07 – 2021-12) • Road calls to subdivision sites to repair equipment, which includes hydraulic leaks, engine oil leaks, coolant leaks, and no starting problems • Removal of old hydraulic lines, new hydraulic lines made, and new line installed/tested • Troubleshoot and repair excavators, bulldozers, pavers, skid steers, backhoes, graders, loaders Class 8 trucks, and pickups • Troubleshoot and repair brakes, wheel seals, clutches • Electrical/electronic issues on Peterbilt and Kenworth trucks Diesel Mechanic at Republic Services (2020-12 – 2021-06) • Computer diagnostics on Cummins, MACK, PACCAR engines • Troubleshoot and repair hydraulic leaks, air over hydraulic problems, brakes, wheel seals, drag links, king pins, tie rods and set toe in alignment • Build new hydraulic hoses with shop provided equipment • Run wiring for backup, side and hopper camera Diesel Mechanic at Drake's Diesel Repair (2019-12 – 2020-12) • Computer diagnostics on Cummins, CAT, Detroit, and International • Engine conversions between models • Major electrical repairs, including rebuilding Kenworth PD boxes, to rewiring a circuit to prevent harness replacement • Diagnose and repair A/C problems • Gear work, differentials, transmissions, in frame and out of frame overhauls on all engines Service Technician Level 5 at Rush Truck Centers of Utah Inc. (2017-09 – 2020-01) • Perform major in frame and out of frame overhauls on all makes/models of Cummins, Caterpillar and International engines from electronic to mechanical • Computer diagnostics for all makes/models of Cummins and International engines • Perform all aspects of general engine repairs including: EGR coolers, turbos, progressive damage and electrical repairs • Assist with training of apprentices in the shop Technician IV at Peterbilt of Utah (2014-03 – 2017-09) • Perform computer diagnostics for all makes/models of Cummins and CAT engines • Perform major in frame and out of frame overhauls on all makes/models of Cummins from electronic to mechanical • General maintenance on MX engines • Perform all aspects of general engine repairs including: EGR coolers, turbos, overheads, cams, oil leaks, and coolant leaks • Perform repairs on clutches, brakes, king pins, A/C and major OEM electrical • Perform road calls to customer location as needed • Assist with training of apprentices in the shop Service Technician Level 5 at Rush Truck Centers of Utah Inc. (2013-03 – 2014-03) • Perform major in frame and out of frame overhauls on all makes/models of Cummins and International engines from electronic to mechanical • Computer diagnostics for all makes/models of Cummins and International engines • Perform all aspects of general engine repairs including: EGR coolers, turbos, progressive damage and electrical repairs • Assist with training of apprentices in the shop Journeyman Diesel Mechanic at Cummins Rocky Mountain, LLC. (2010-06 – 2013-03) • Repair all minor and major problems with Cummins engines • Models include: STC 855, N14, ISX 870, ISX 871, ISM, ISC, ISL, ISB, and natural gas • In-frame and out-of-frame engine overhauls, EGR coolers, cam shafts, turbos, engine harnesses, after treatment systems, overheads, transmissions, and clutch replacements • Computer diagnostics for all Cummins engines • Assemble QSK-78 Motive Power modules with auxiliary and main generators • Remove and replace QSK 78 engines on Kennecott haul trucks • Assist with training of apprentices in the shop Journeyman Diesel Mechanic at LW Miller (2009-01 – 2010-06) • Repair wiring problems on utility equipment, hydraulic leaks, including hoses, rams, and valves • Troubleshoot and repair engine problems on Cummins, ISB, ISC, ISX; Cat 3406B and 3406E; C13 and C15 ACCERT, Detroit, Mercedes, and Mack • Remove, replace, and/or rebuild engines, transmissions, rear ends and steering gears • Perform all aspects of preventative maintenance and repair • Computer diagnostics for T444E, VT365, CAT, Cummins, Detroit, Mercedes and International engines • Computer diagnostics for hydraulic and air ABS • Intune diagnostics for International Multiplex Dashes • Troubleshoot and repair all aspects of HVAC units on Kenworth, Peterbuilt, International, Freightliner, Ford, Mack, Western Star, and Volvo trucks

Heavy Duty Preventive Maintenance, Heavy Duty Chassis, Basic Machine Shop, Heavy Duty Electrical, Hydraulics, Industrial Electronics, Basic Diesel Engines, Advanced Diesel Engines, ARC and Acetylene Welding, Communications, Career Development, Astronomy, Business Management – Salt Lake Community College (1992 – 1994)