Heavy equipment technicians service, repair, and maintain machines and vehicles used in the farming, construction, and transportation industries. Examples include bulldozers, semi-trucks, cranes, buses, and tractors. Diagnostics, part replacement, and component testing are all specialised tasks. This job is physically demanding, necessitating heavy lifting and working in awkward positions, and it is typically conducted in a noisy setting. Technicians who deal with heavy machinery may be expected to work outside in various weather conditions. Depending on their location, some technicians' work is seasonal.