Checking And Cleaning The Cab Air Filter - Komatsu WB93S-5 F50003 Operation & Maintenance Manual

MAINTENANCE PROCEDURES
8 - Put back the cover (2), turning it clockwise by approximately
12.5°. Make sure that the cover (2) is perfectly locked and
make sure that the ejector (5) is positioned vertically on the
lower part.
9 - Once the whole has been assembled, push the safety
retainer (1) toward the inside.
IMPORTANTE
If the clogging warning light comes on after the starting of
q
the engine, it is necessary to change the primary filtering
element and the safety cartridge.
Change the primary filtering element after 6 cleaning
q
operations or after one year. Every time the primary
filtering element is replaced, the safety cartridge must be
replaced, too.
To change the safety cartridge (6), after removing the primary
element (3), proceed as follows:
1 - Remove the safety cartridge (6) and replace it with a new
one.
2 - Once the safety cartridge (6) has been installed inside the
filter housing (4), make sure that it fits perfectly in its seat.
3 - Reassemble the whole as described above, making sure that
all the filter components are perfectly secured.
4 - Push the safety lock (1) towards the inside.
4.8.1.b CHECKING AND CLEANING THE CAB
AIR FILTER
Wear safety goggles during the cleaning operations.
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The air suction for the ventilation of the cab is protected by a filter
positioned on the right side of the cab.
This filter blocks all the impurities contained in the air and must be
cleaned whenever a decrease in air circulation is observed.
The filter can be reached from the outside of the cab. To clean the
filtering element, proceed as follows:
1 - Remove the screws (1), remove the outer guard (2) and
extract the filtering element (3).
2 - Hit the element slightly on the palm of your hand to eliminate
the dust and blow compressed air on its surfaces, keeping
the jet at a distance of about 15 cm and making sure that the
pressure does not exceed 4–5 bars.
3 - Carefully clean the filter housing, taking care to prevent any
foreign body from getting into the suction duct, and
reassemble the unit.
IMPORTANTE
If the filtering element is excessively clogged or damaged,
q
change it with a new one.
192
AVVERTENZA
1
5
4
6
2
3
2
12.5°
RKAB3720
RKAB3730
1
RKAB6670
RKAB4950