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 5-22 STOWAGE OF PROJECTILE EXTRACTOR IN HOWITZER Stow the projectile extractor (1) in the holding brackets (2) provided. Due to space limitations, the projectile extractor must be stowed in the retracted position. See paragraph 5-18 for projectile extractor breakdown procedures. 5-23 M712 PROJECTILE MAINTENANCE Humidity indicators on containerized M712 projectiles must be monitored for humidity every 90 days, as a minimum. If relative humidity in the container is 40 percent or greater, (40 percent section of humidity indicator card is not blue), turn containerized M712 projectile in to battalion ammunition section. 5-99/(5-100 blank)