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EXCAVATOR OPERATION
HOW TO RELEASE PRESSURE TRAPPED IN THE HYDRAULIC SYSTEM
1. Lower the attachments and the blade down to the ground. 2. Turn the key to "STOP" position and shut off the engine. 3. After stopping the engine, turn the key to "RUN" position. 4. Set the lock lever to "Unlock" position.
3. Make sure that the flow volume in all the AUX ports is not minimized. If the pressure is removed after minimizing the flow volume in the AUX port, release pressure is not removed completely and the hose coupler may be unable to connect and disconnect.
(1) Flow volume in AUX port display
(1) Lock lever for attachment control (2) Attachment control lever (left)
(A) Flow volume in AUX port (B) Maximum (C) Minimum
(A) "Unlock" (B) "Lock"
5. Move the operating lever to release pressure in the hydraulic system. [How to release pressure trapped in the AUX port] 1. Perform the above operations of 1 to 4. 2. Turn "ON" the AUX port enable switch.
(B) Maximum status of flow volume in AUX port (C) Minimum status of flow volume in AUX port
(1) AUX port enable switch (Switch 3)
