This manual covers the Nissha hydraulic hammer and hydraulic power pack, specifically models NH-40, NH-70, NH-100, NHP-150, and NHP-160, along with their respective serial number ranges. These units are engineered for robust performance in demanding applications, representing Nissha's commitment to durable and reliable hydraulic equipment. Their design prioritizes efficiency and longevity, making them suitable for a wide array of industrial and construction tasks where powerful and consistent hydraulic force is essential. The purpose of this document is to provide comprehensive guidance for the operation, maintenance, and repair of your Nissha hydraulic equipment. It includes detailed instructions on routine servicing, troubleshooting common issues, and understanding technical specifications. Adhering to the procedures outlined herein will ensure the optimal performance, safety, and extended service life of your hydraulic hammer and power pack, serving as an invaluable resource for operators and service technicians alike.