Komatsu — Hydraulic Circuit Connection

ATTACHMENTS AND OPTIONS MACHINE READY FOR ATTACHMENT HYDRAULIC CIRCUIT 6 Hydraulic Circuit Connection 6 When connecting the attachment, connect the hydraulic circuit as follows. One Line Attachment 6 1. Check that the stop valve is at the LOCK position, then remove plug (1). Be careful not to lose or damage the removed parts. 2. Connect the piping for the attachment provided by the attachment maker. The dimensions on the stopper valve side are as indicated at right. For those on the attachment side, confer with each manufacturer of attachment and determine. 3. After connecting the piping, bleed the air from the circuit. 4.

Start the engine, referring to “STARTING ENGINE (3-72)“, and run it at low idling for the subsequent 10 minutes. Then proceed to the next work. 5. Run the engine at low idling until the air in the attachment circuit is completely removed, then operate the attachment pedal repeatedly (approx. 10 times) to bleed the air. NOTICE If the attachment maker specifies an air bleeding proce- dure for the attachment itself, follow the specified proce- dure to bleed the air. 6. After completing the bleeding of the air, stop the engine, and wait for at least 5 minutes before starting operations. This will release the bubbles in the oil inside the tank. 7.

Check that there is no oil leakage, and wipe off any oil that has been spilled. 6-11