This manual covers various Volvo diesel engine models, including the TAD1630GE, TAD1631GE, TID162AP, TWD1620G, TWD1630GE, and TD164KAE. These robust engines are characterized by their 16.1-liter displacement, turbocharged induction, and liquid-cooling systems, designed for demanding applications where reliability and performance are paramount. While specific power and torque outputs vary across these models, they are engineered to deliver substantial performance suitable for heavy-duty industrial and power generation use. The purpose of this comprehensive workshop service repair manual is to provide essential information for the maintenance and repair of these Volvo engines. It details critical procedures, technical specifications, and maintenance schedules, including lubrication requirements, recommended oil types, and filtration guidelines. This guide is an indispensable resource for owners, mechanics, and technicians seeking to ensure the optimal performance, longevity, and proper functioning of their Volvo diesel engines.