Driving a vehicle with a malfunctioning air-conditioning, or AC, compressor on a hot day is a miserable experience. The compressor is a major component of the AC system but can fail from seizure. Rebuilding the compressor is an option for a do-it-yourselfer.
An AC compressor pressurizes internal refrigerant fluid for cooling the air that enters the vehicle interior. The compressor functions by using multiple mechanical parts meshed together for the physical refrigerant pressurization. The mechanical aspect of the compressor makes it possible for a mechanic to disassemble and analyze the moving parts for a rebuild.