Komatsu ecot3 Operation And Maintenance Manual page 375

MACHINE READY FOR ATTACHMENT MACHINE READY FOR ATTACHMENT
7. Loosen slowly oil filler cap (F) on top of the hydraulic tank to
eliminate the internal pressure in the hydraulic circuit.
8. After checking that the hydraulic oil temperature has gone down, remove the plugs from 2 places at the outlet
port and inlet port. Be careful not to get any dirt or mud on the hose mouthpiece.
If the O-ring is damaged, replace it with a new part.
9. Connect the hose at the attachment side.
When doing this, check the direction of flow of the oil and be careful not to make any mistake.
10. Set the rotor of the stop valve installed to the inlet port on the
side face of the arm and the outlet port piping to FREE position
(a).
(a) FREE: Hydraulic oil flows (direction of arrow is parallel to
long direction of arm)
(b) LOCK: Hydraulic oil does not flow (direction of arrow is at
right angles to long direction of arm)
When setting the FREE or LOCK position of the stop valve
rotor, remove bolt (2), turn over plate (1), then turn the rotor.
After setting, install plate (1) again with bolt (2).
11. After installing the attachment, check the oil level in the hydraulic tank.
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ATTACHMENTS AND OPTIONS ATTACHMENTS AND OPTIONS