Komatsu PC450-8 Operation & Maintenance Manual page 292

MAINTENANCE PROCEDURE
NOTICE
Be sure to install the air cleaner element facing in the cor-
rect direction.
Install so that the bottom of the air cleaner element cylin-
der (face where no hole is drilled) (B), (C) is at cover (3)
end. If the direction of installation is mistaken, there is
danger that it will cause breakage of the air cleaner ele-
ment or serious damage to the engine.
8. Replace O-ring (8) of cover (3) with a new part.
NOTICE
When inserting the element, if the rubber at the tip is swol-
len 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.
9. 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) Always install cover (3) so that the evacuator (4) is facing the ground (A).
5) 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.
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MAINTENANCE