This Service Workshop Manual provides comprehensive information for the JCB 38 TD and 4/98NT engines, which are internal combustion diesel engines developed by the British Leyland Motor Corporation (BLMC). These engines are integral to various JCB equipment, and this manual details their maintenance and overhaul procedures. The 4/98NT variants, for instance, feature a displacement of approximately 4.8 liters. This manual is designed to support the ongoing operation and longevity of these robust power units.

The purpose of this English-language manual is to serve as an authoritative guide for owners, technicians, and mechanics. It covers essential aspects of engine care, including detailed maintenance schedules, lubrication requirements, and specific technical data. By following the procedures outlined herein, users can ensure optimal performance, reliability, and efficiency of their JCB engines. The manual offers in-depth coverage for maintenance and overhaul, enabling effective troubleshooting and repair.