Diesel Mechanic

Diesel Engine Builder: Longblock Assembly (Cat & Cummins) About the role Bennett Truck Center is looking for an experienced heavy-duty diesel engine builder to assemble longblocks in our shop. This is a bench assembly position, not in-chassis repair or general truck work. You’ll build Cat and Cummins longblocks to spec, with a focus on precision, cleanliness, and consistent quality. Caterpillar C15, 3406E, and 3406B Cummins N14 Cummins ISX/X15, both single overhead cam (SOHC) and dual overhead cam (DOHC) What you’ll do Assemble short blocks and longblocks: crankshafts, rods, pistons, rings, bearings, liners, camshafts, and cylinder heads Install and protrude cylinder liners to spec Cut and repair liner counterbores to spec, then shim as needed to set correct liner protrusion Install front and rear gear trains, including crank, cam, idler, and accessory drive gears, gear housings, and covers Align timing marks and set cam timing to spec Measure gear backlash and idler endplay with dial indicators Measure and verify clearances with micrometers, bore gauges, dial indicators, and feeler gauges Check bearing clearances, ring end gaps, crank endplay, and piston protrusion Torque fasteners to spec, including torque-to-yield and torque-angle procedures Inspect incoming machined parts and flag anything out of spec Record measurements on a build sheet for every engine Keep a clean, organized assembly area What we’re looking for [2+] years of heavy-duty diesel engine building experience Hands‑on experience with Cat C15/3406 and Cummins N14/ISX engines Experience installing diesel gear trains, including timing alignment and backlash checks Proficiency cutting liner counterbores with portable counterbore tools, and measuring counterbore depth and flatness accurately Strong precision measuring skills, with confidence reading micrometers and bore gauges Working knowledge of machine shop processes such as honing, decking, and line boring Ability to read and follow OEM service specs (Cat SIS, Cummins QuickServe) Attention to detail and pride in clean, repeatable work Must have your own tools (specialty tools provided) What we offer $30-50/hr, depending on experience Schedule: Monday–Friday, 8am–6pm, with some Saturdays Specialty tools provided, including counterbore tools, liner tools, and engine‑specific service tools A dedicated assembly area with quality equipment #J-18808-Ljbffr Bennett Truck Center