This manual covers the Komatsu 95E-5 Series Diesel Engine, specifically the SAA4D95LE-5 model. Designed for repair and maintenance, this engine is integrated into various Komatsu machinery, including the PC78US-8, PC88MR-8, PC120-8, PC130-8, PC138US-8, PC138USLC-8, D31EX-22, D31PX-22, D37EX-22, D37PX-22, WA150-6, and WA150PZ-6. The Komatsu brand is recognized for its engineering quality and reliability, ensuring robust performance in demanding applications. This comprehensive Service Repair Manual provides essential information for maintaining and repairing your Komatsu diesel engine. It includes detailed sections on General Information, Engine Mechanical, Fuel System, Exhaust System, Cooling System, Lubrication System, Electrical System, Intake System, and Preheating System. With technical data, diagrams, step-by-step guides, and tool requirements, this manual is an indispensable resource for owners, mechanics, and technicians seeking to ensure the optimal performance and longevity of their equipment.