Komatsu WB93R-5, Operation & Maintenance Manual

Page: 191 / 284

MAINTENANCE PROCEDURES
189
4.8 MAINTENANCE PROCEDURES
4.8.1 WHEN REQUIRED
4.8.1.a CHECKING, CLEANING OR CHANGING
THE ENGINE AIR FILTERS
WARNING
q
Remove the air filter only after stopping the engine and do
not start the engine if the air filter is open.
q
Wear safety goggles during the cleaning operations.
IMPORTANT
q
The air filtering system consists of a primary filtering ele-
ment with considerable capacity and of a secondary car-
tridge that ensures additional safety protection.
The primary element can be cleaned with compressed air,
while the safety cartridge can only be changed.
q
The filter must be cleaned when the clogging warning light
(A) positioned on the side dashboard comes on or flashes.
To reach the air filter lift the loader arm, engage the mechanical
safety lock and open the engine hood (see "3.5.1 ENGINE
HOOD").
To clean the primary element, proceed as follows:
1 - Release the safety retainer (1), moving it toward the outside.
2 - Turn the cover (2) counterclockwise by approximately 12.5°.
3 - Lift the cover (2) and extract the filtering element (3).
4 - Slightly strike the filtering element (3) on the palm of your
hand, in such a way as to remove the dust, and blow com-
pressed air on the inner surface, keeping the air jet at a dis-
tance of approximately 15 cm and taking care to prevent the
pressure from exceeding 4-5 bars.
5 - After the cleaning operations, inspect the filtering surface for
damage by introducing a lamp into the cartridge and carefully
check the gaskets of the front seals.
If the cartridge is damaged, replace it.
6 - Carefully clean the inside of the filter housing (4), taking care
to prevent foreign bodies from getting into the suction duct.
7 - Put back the filtering element (3), making sure that it fits per-
fectly in its seat.
RKAB3690
A
RKAB3700
12.5 °
2
1
RKAB3710
3
4
RKAA1410
3
https://tractormanualz.com