Komatsu D31EX-21, Operation & Maintenance Manual, Page: 201 / 256

MAINTENANCE
SERVICE PROCEDURE
4-21
8. If small holes or thinner parts are found on the element
when it is checked by shining a light through it after clean-
ing, replace the element.
NOTICE
When cleaning the element, do not hit or beat it against
anything.
Do not use an element whose folds, gasket or seal are
damaged.
9. Set the cleaned outer element and install dust cup (3), then secure them with clips (2).
CAUTION
When installing the dust cup, check O-ring (7). If the O-ring has any defect, replace it.
When installing the dust cup, hold the case down securely and check that all three clips (2) are fitted cor-
rectly to the body.
10. Push the button of dust indicator (1) and return the yellow piston to its original position.
11. Close the left engine side cover.