Komatsu PC490-11, Installation And Instruction Manual

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4.
Loosen oil filler cap (F) slowly on the top of the hydraulic
tank to release the internal pressure in the hydraulic tank.
5.
Check that the hydraulic oil temperature is low.
6.
Turn the rotor of the stop valve installed to the piping for
the inlet port and the outlet port on the side face of the arm
to LOCK position (L).
7.
Remove the hoses on the attachment side. Install the
plugs to outlets (2 places).
The plugs are used to prevent the attachment from making
incorrect operation caused by mixing in of foreign matter.
After the plugs are correctly installed, store the attach-
ment.
8.
Pull out the mounting pins (2 places), remove the attach-
ment, then install the bucket.
For the installation procedure of the bucket, see “METHOD
FOR REPLACING AND INVERTING BUCKET (3-207)”.
9.
Check oil level in hydraulic tank.
For details, see “METHOD FOR CHECKING OIL LEVEL
IN HYDRAULIC TANK, ADDING OIL (3-149)”.
METHOD FOR INSTALLING ATTACHMENT
1.
Remove the bucket.
For the removal procedure of the bucket, see “METHOD FOR REPLACING AND INVERTING BUCKET
(3-207)”.
2.
Place the attachment on a horizontal place, install pin (A) and then pin (B) in this order to the arm.
Pin (A) 80 mm diameter
Pin (B) 80 mm diameter
3.
Lower the attachment to the ground and stop the engine.
HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT ATTACHMENTS AND OPTIONS
6-22