Hitachi Zaxis 70 | Control Valve Maintenance & Hydraulic Service

In this video, I perform a maintenance service on the Hitachi Zaxis 70 control valve. This includes: • Removing hydraulic lines and fittings • Inspecting for leaks, rust, and worn-out seals • Cleaning internal passages and valve surfaces • Replacing O-rings and gaskets where needed • Reassembling and checking valve operation This service is important to keep the hydraulic system running smoothly, prevent internal leakage, and extend the life of your excavator. If you’re into excavator repair, hydraulic troubleshooting, and heavy machinery restoration, make sure to subscribe for more practical repair videos. Join this channel to get access to perks:    / @maxroymxcy