28. MACHINES READY FOR ATTACHMENTS MOUNTING PROCEDURE 1. Remove the bucket. For bucket dismounting procedure, see 12.15 “REPLACEMENT AND INVERSION OF BUCKET’’. 2. Place the attachment on a flat place, install pins A and B to the arm in that order. 3. After mounting the attachment, stop the engine. Operate each work equipment control lever and the attachment control pedal to full stroke back and forth, right and left to eliminate the internal pressure in the hydraulic circuit. pin pin 4. After confirming low oil temperature, remove the blind plug from the outlet and inlet port respectively. Take care that no dust, mud, etc. adheres to the hose mouthpiece portions.
If O-ring is damaged, replace it with a new one. 5. Turn the rotor of the stop valve connected to the inlet and outlet piping on the arm side face to the free position. 6. Confirm that oil level in the hydraulic oil tank is correct, after mounting the attachment. FREE PC450-ENG 5-10