Recent SemestersSummer 2026, Summer 2025, Summer 2024, Summer 2023, Summer 2022Class Size24 studentsCredits3PrerequisiteIt is advised that students be able to engage in written composition at a college level and read college-level texts. Transfers ToCSUDescriptionThis is an introductory course design to familiarize students with the basic construction, operation, and emission controls of the four-stroke diesel engine. Topics include engine blocks, rotating assemblies, cylinder heads, valve trains, and intake, exhaust, lubrication and cooling systems. In addition, fuel systems and diesel emission reduction strategies are also discussed. Students learn the proper use of diagnostic tools and how to safely perform basic engine tests and minor repairs. This course is designed to be a companion course to HET 121, HET 122, HET 123 and HET 124, and it is required for the Heavy Equipment Maintenance Technician Certificate. Students are encouraged to complete all five courses in order to obtain a firm foundation in heavy equipment technology.Usually HeldTue Thu 6:00pm–8:50pm, Tue Thu 6:00pm–8:35pm, Tue Wed Thu 6:00pm–8:25pm 