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 3-6 ARMAMENT AND CAB MAINTENANCE - CONTINUED 3-6.8 Breech Mechanism - Continued c. Assembly - Continued 9 If removed, install spring (30), housing (28), and block assembly (29) in carrier assembly (39). 10 Support housing (28) and firing group block (1). Install nut (17) using spanner wrench. NOTE Cartridge extractor is located inside firing group block. Some howitzers may have different configurations of housing. 11 Position cartridge extractor (27) over nut (17). 3-74