Automobile overhaul is mainly divided into four types: vehicle overhaul, assembly overhaul, minor automobile repair, and parts repair. Vehicle overhaul is the most comprehensive restoration method, involving the replacement or repair of all key components, such as the crankshaft, pistons, connecting rods, and valve assemblies inside the engine, as well as the gears, bearings, and seals of the transmission, to ensure the vehicle's performance is restored to a condition close to its factory state. Assembly overhaul focuses on core components, such as the separate repair of the engine or transmission, restoring their original functions by replacing worn parts. Minor automobile repair addresses localized issues, resolving temporary faults or potential hazards in daily use, such as replacing individual parts or adjusting safety components. Overhaul work must strictly adhere to technical standards, and repaired components must pass performance tests to ensure safety and reliability. Additionally, professional repair facilities must be equipped with advanced tools and implement rigorous quality management systems to maintain repair quality and control costs.
