Válvula de controle principal hidráulica da máquina escavadora principal da válvula de controle UX22 de EC140 14550306

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July 27, 2026
Descrição do vídeo:
Observe the step-by-step operation and see practical examples of usage. In this video, we demonstrate the EC140 Hydraulic Main Control Valve UX22, showing how it functions as the hydraulic system's main switch and flow divider in excavators. You'll see detailed explanations of its role in controlling boom, arm, bucket, swing, and travel motions, along with common troubleshooting scenarios for issues like sluggish operation, unstable actions, and oil leakage failures.