TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 2 Download
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This task covers: a. Removal d. Cleaning b. Inspection e. Installation c. Emergency Cleaning a. Removal 1. Loosen bolt (8), and remove ring clamp (1), cover (2), and gasket (3) from air cleaner assembly (6). 2. Remove nut and washer assembly (7) and filter element (4) from stud (5) and air cleaner assembly (6). 3. Cover housing opening with screen or rag to prevent contaminants from entering the air intake system and damaging your engine. INITIAL SETUP: Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) Materials/Parts Detergent (Appendix C, Item 17) Manual References TM 9-2320-280-10 TM 9-2320-280-24P Equipment Condition Hood raised and secured (TM 9-2320-280-10). General Safety Instructions • Compressed air used for cleaning purposes will not exceed 30 psi (207 kPa). • If NBC contamination is suspected, consult NBC officer or NBC NCO for appropriate handling instructions. 3-13. AIR CLEANER FILTER ELEMENT SERVICING c. Emergency Cleaning CAUTION Do not strike ends of filter element on hard surface or damage to filter element may result. Remove dust or sand from filter element (4) by holding it so neither end faces ground. Gently tap around filter element (4) to free dust and sand. TM 9-2320-280-20-2 3-22 Change 2 b. Inspection WARNING • Improper cleaning methods and use of unauthorized cleaning liquids can injure personnel and cause damage to equipment. Do not use anything other than compressed air, water, and detergent to clean elements. • If NBC contamination is suspected, consult NBC officer or NBC NCO for appropriate handling instructions. 1. Check gasket (3) for dents, tears, rips, and other damage. Make sure the gasket has not taken a set. Make sure there are no hard dirt ridges on the sealing surfaces. 2. Inspect filter element (4) for holes and tears by looking through the element toward a bright light. If pinpoints of light shine through, replace the element. Holes that are large enough to let light through are large enough to let contaminants through. Another way to check for leaks or damage is to look for uneven dirt patterns. Make sure there is no rust or flaking paint on metal parts of the filter. If the filter has already been cleaned three times, or if you find damage, replace it. 3. Check air cleaner assembly (6) for holes, dents, rust, or any other damage that will interfere with proper sealing and allow unfiltered air to enter and destroy engine.