TM 9-2320-386-10 3-24 Change 1 3-8. AIR CLEANER SERVICE WARNING If NBC exposure is suspected, all air filter media should be handled by personnel wearing protective equipment. Consult your unit NBC officer or NBC NCO for appropriate handling or disposal instructions. a. General. Air cleaner service is required whenever the yellow band is visible in window of air cleaner indicator (1). The operator will service the air cleaner in an emergency situation only. Notify unit maintenance as soon as possible. CAUTION Do not operate engine without an air cleaner element. Doing this may result in internal engine component damage. b. Removal. (1) Loosen wingnut (6) and remove cover flange (2) from air cleaner (4). NOTE Inspect seal on cover flange (2) for damage. If damaged, notify unit maintenance. (2) Remove wingnut (3) and filter element (5) from air cleaner (4). 1