Komatsu D61EX-24 Operation & Maintenance Manual page 369

MAINTENANCE PROCEDURE
2.
Turn knob (2) to open the inspection cover at the rear of
the machine, and remove the fresh air filter.
3.
Install the new fresh air filter, and tighten knob (2).
REMARK
When the inside of the filter case is dirty, clean it before in-
stalling the filter.
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MAINTENANCE