Let’s dive in — see this solution in action and notice the key moments. In this video, we demonstrate the complete installation process for the Hitachi Cylinder Seal Kit 4364912, showing you step-by-step how to properly replace seals and components on Hitachi EX120, EX130, and EX140 excavator blade cylinders. You'll learn professional techniques for cylinder repair, understand the kit's comprehensive parts layout, and get practical insights into ensuring optimal hydraulic performance and equipment longevity.