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 2–74 Change 3 Table 2–1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR M109 SELF-PROPELLED HOWITZER — CONTINUED Location Item No. Not Fully Mission Capable If: Crewmember Procedure Item to Check/ Service Interval 56 After Hygroscopic Breather (M109A4/M109A5) CHIEF OF SECTION Check hygroscopic breather (1) color indicator. If color is blue or white, hygroscopic breather is func- tioning. If color is speckelled pink or yellow, notify unit maintenance. 1