Komatsu D155A-6 Operation & Maintenance Manual page 157

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OPERATION
CHECK DUST INDICATOR
1. Check for the yellow piston overlapping the red zone on the
dust indicator (1).
2. If the yellow piston is overlapping the red zone, clean or
replace the element immediately.
For details of the method of cleaning the element, see
"CHECK, CLEAN AND REPLACE AIR CLEANER ELEMENT
(PAGE 4-23)".
3. After checking, cleaning, and replacing, press the knob of dust
indicator (1) to return the yellow piston to its original position.
In environments where the rubber deteriorates quickly or the
surface becomes damaged (in direct sunlight, dusty areas,
etc.), replace before it becomes dirty and it becomes difficult
to judge the condition.
3 - 106
OPERATION

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