Komatsu D155A-6 Operation & Maintenance Manual page 264

MAINTENANCE MAINTENANCE
4. Use a brush or cloth to remove all the dirt stuck to cover (3) and
the inside of air cleaner body (6).
NOTICE
The inner element must not be cleaned and used again. When replacing the outer element, replace the inner element at the
same time.
If the inner element is not installed properly and the outer element and cover are installed, there is danger that the outer element
will be damaged.
The seal portion on imitation parts lacks precision, and allows the entry of dust, which leads to damage of the engine. Do not
use such imitation parts.
5. Remove inner element (5), then quickly install the new inner
element.
Push the inner element in properly and check that it is fitted
securely.
6. Push new outer element (4) straight into the air cleaner body
with your hand.
If you hold the element and move it carefully up and down and
to the left and right, it is easier to insert the element.
7. Replace O-ring (7) for cover (3) with new one.
NOTICE
When inserting the element, if the rubber at the tip is swollen or the outer
element is not pushed in straight, and cover (3) is assembled by force to
hook (2), there is danger that the hook and air cleaner body may be
damaged, so be careful when assembling.
8. Install cover (3) as follows.
1) Align cover (3) with the element.
2) Hook the tip of hook (2) to the protruding part of the air
cleaner body and lock it in position.
3) When locking hooks (2) in position, apply the hooks in turn
on opposite sides (top, bottom, left, right) in the same way
as when tightening bolts.
4) When cover (3) is installed, check that the clearance
between the air cleaner body and cover (3) is not too large.
If it is too large, install again.
SERVICE PROCEDURE SERVICE PROCEDURE
4 - 27