This workshop manual pertains to the Lucas CAV DPC Fuel Pumps, designed for diesel fuel systems. These fuel pumps are engineered for robust performance and reliability in service applications, particularly when utilized with Hartridge test stands and other approved equipment. The DPC model represents a significant advancement in fuel pump technology, ensuring efficient operation and longevity for the equipment it serves. This comprehensive manual provides essential guidance for the servicing of Lucas CAV DPC fuel pumps. It covers critical aspects of maintenance, repair, and setup procedures, ensuring that technicians and service personnel can effectively maintain the optimal performance of these diesel fuel pumps. The content is presented in English and is intended to be a definitive resource for all service-related tasks.