Komatsu PC490-11, Installation And Instruction Manual

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1.
Open the door at the rear left side of the machine, remove
hooks (2) (6 places) and remove cover (3).
2.
Hold outer element (5), rock it lightly up and down and to
the right and left, and twist to pull it out.
3.
When outer element (5) is removed, check that the inner
element does not come out of position and is not at an an-
gle.
If it is at an angle, push it straight to the bottom with your
hand.
4.
After removing outer element (5), cover the inner element
(6) with a clean cloth or tape to prevent dirt or dust from
entering.
5.
Clean dusts in inside and on cover (3) of air cleaner body (7) by using a clean cloth or brush.
6.
If any dust is attached to vacuator valve (4) installed to
cover (3), remove it.
7.
When the outer element has been cleaned 6 times or used
for 1 year, replace it.
• When the element needs to be replaced
Replace the inner and outer elements with new ones.
For details, see “METHOD FOR CHANGING AIR
CLEANER ELEMENT (4-18)”.
• When the element does not need to be replaced
Clean the outer element. Continue the cleaning proce-
dure.
8.
Blow dry compressed air (Max. 0.2 MPa {2.1 kg/cm
2
} )
from the inside of the outer element along the pleats.
9.
Blow along the pleats from the outside, then blow again
from the inside.
10. After cleaning, illuminate the inside of the element with an
electric bulb to check.
If any holes or thin places are found, replace the inner and
outer elements.
11. Remove the cover of cloth or tape attached to inner ele-
ment (6).
MAINTENANCE PROCEDURE MAINTENANCE
4-16