Komatsu D51EX-24, Operation & Maintenance Manual

Page: 295 / 382

NOTICE
• If the outer element and cover are installed while the inner element is not installed properly, the
outer element may be damaged.
• Do not clean and reuse the inner element. When replacing the outer element, replace the inner
element with new one at the same time.
• The sealing portion of the improper part lacks precision, and allows the entry of dust, which
leads to damage of the engine. Do not use such improper part.
5.
Remove the inner element (5), then install the new inner element immediately.
Install the inner element securely so that it does not move.
6.
Install the new outer element (4).
NOTICE
• When installing the cover (3), check the O-ring (7)
for a scratch, etc. If it has any scratch, etc., re-
place it.
• When installing the cover (3), press it to the case
securely, and check that clips (2) are secured cor-
rectly at 3 places.
7.
Replace the O-ring (7) of cover (3) with a new one.
8.
Set the arrow mark on cover (3) at the top, install it to the
air cleaner body, then secure it with clip (2).
9.
Push the button of dust indicator (1).
The yellow piston returns.
REMARK
• Immediately after a new element has been installed,
the yellow piston of the dust indicator may go to the
position in the range of 3.7 to 5.0 kPa {0.04 to
0.05 kg/cm
2
}, but this does not indicate any abnormal-
ity.
• For the machines installed with a pre-cleaner of large
intake resistance or a rain cap, immediately after a
new element has been installed, the yellow piston of
the dust indicator may go to the position in the range
of 5.0 to 6.2 kPa {0.05 to 0.06 kg/cm
2
}, but this does
not indicate any abnormality.
10. Replace the seal stuck to cover (3) with a new one.
11. Close the engine side cover on the left side of the ma-
chine.
MAINTENANCE MAINTENANCE PROCEDURE
4-19