TM-9-2350-311-10 M109 Operator's Manual for M109A2, M109A3, M109A4 and M109A5 Download
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TM 9-2350-311-10 Item No. 54 Interval After Table 2-1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR M109 SELF-PROPELLED HOWITZER - CONTINUED Location Item to Check/ Service Air Cleaner Indicator 2-72 Change 2 Crewmember Procedure DRIVER NOTE Air cleaners should be checked daily in dusty conditions. a. Check air cleaner restriction indicator (1) for gage reading. If the air cleaner restriction indica- tor reads 20 to 24 in. H 2 O, clean the air cleaner filter packs (2) at the next service interval. If the air cleaner restriction indicator reads 25 in. H 2 O or greater, clean and service air cleaner filter packs. Blow air cleaner filters out with low pres- sure air and wash with warm water if needed. If washed, allow air cleaner filters to completely dry before reinstallation. b. Check air cleaner doors, seals, and hoses. Not Fully Mission Capable If: Any air cleaner filter, hose, or seal is missing or damaged. Doors do not seal properly. Any leakage of unfiltered air into intake system is evident.