Komatsu PC450-8, Operation & Maintenance Manual

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MAINTENANCE
MAINTENANCE PROCEDURE
4-21
WHEN REQUIRED 4
CHECK, CLEAN AND REPLACE AIR CLEANER ELEMENT 4
WARNING
q
When using compressed air, there is danger of dirt flying and causing personal injury.
Always wear protective glasses, dust mask, or other protective equipment.
q
When removing the outer element from the air cleaner body, it is dangerous to pull it out by force.
When working in high places or where the foothold is poor, be careful not to fall because of the reac-
tion when pulling out the outer element.
NOTICE
q
Do not clean the air cleaner element until the air cleaner clogging monitor on the monitor panel light
up. If the element is cleaned frequently before the air cleaner clogging monitor light up, the air cleaner
will not be able to display its performance fully, and the cleaning efficiency will also go down.
In addition, during the cleaning operation, more dirt stuck to the element will fall inside the inner ele-
ment.
q
If inspection, cleaning, or maintenance is carried out with the engine running, dirt will enter the engine
and cause damage to the engine. Always stop the engine before carrying out these operations.
Checking 4
If air cleaner clogging monitor (1) of the monitor panel
flashes, clean the air cleaner element.
Replacing
q
Replace element, O-ring
If the element has been used for one year, or air cleaner
clogging monitor (1) on the monitor panel lights up after the
element has been cleaned, replace outer element (5),
inner element (6), and O-ring (8).
q
Replacing vacuator valve
Replace vacuator valve (4) if it is damaged or if the rubber
is markedly deformed.