Komatsu PW160-7H Operation & Maintenance Manual page 290

SERVICE PROCEDURE
CLEANING RECIRCULATED AIR FILTER
1. Remove wing bolts (1) from the inspection window at the bot-
tom rear left on the inside of the operator's cab, then take out
the recirculated air filter.
2. Clean the filter with compressed air. If there is oil on the filter,
or if the filter is extremely dirty, wash and dry it thoroughly
before using it again.
If the clogging of the filter cannot be removed by blowing with
air or washing with water, replace with new one.
290
MAINTENANCE
PW160-7H VEAM390100