TM-9-2350-311-10 M109 Operator's Manual for M109A2, M109A3, M109A4 and M109A5 Download
Page 467 of 775
TM 9-2350-311-10 3-6 ARMAMENT AND CAB MAINTENANCE — CONTINUED 3-6.8 Breech Mechanism — Continued a. Disassembly — Continued 13 14 15 Slide firing group block (1) to extreme right hand position. NOTE Cartridge extractor is located inside firing group block. Some howitzers may have different configurations of housing. Partially withdraw nut (17) by moving cartridge extractor (27) away from nut. Support firing group block (1) and housing (28). Using spanner wrench, remove nut. If completely disassembling breech mechanism, remove block assembly (29), housing (28), and spring (30). 3-63