A Japanese used bulldozer can be a strong choice for earthmoving, grading, site preparation, road work and land development, but buyers should inspect more than the engine and operating hours. The undercarriage is especially important because tracks, rollers, idlers, sprockets, pins and bushings can represent major future cost. Before buying, confirm the exact model and configuration, then review track wear, blade condition, hydraulic cylinders, final drives, engine performance, frame condition and any rear attachment such as a ripper. Previous use also matters. A machine that worked in rock, quarry material or abrasive soil may show different wear from one used ...