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 5–90 Change 3 5–17 MISFIRE AND CHECKFIRE PROCEDURES The precautions and actions associated with misfire and checkfire are the same for the M712 projectile as for other projectiles in this manual. Refer to paragraph 2–15. 5–18 OPERATION OF PROJECTILE EXTRACTOR a. General The projectile extractor (1) is used to remove the M712 and M823 projectiles from the weapon breech assembly. The following procedures include setting up the projectile extractor in preparation for use, and the breakdown procedures for stowage. b. Setup For Use 1 Get projectile extractor (1) from stowage brackets on right wall of the crew compartment. NOTE Extend the guides for M109A2/A3/A4 M185 Cannon tubes. Retract the guides for M109A5 M284 Cannon tube. 2 Inspect to make sure that the five guide inserts (2) on the projectile extractor (1) are correctly installed for cannon tube. 3 While standing at the rear loosen drive nut (3) (clockwise) to farthest white marks (forward mark). 4 Move brace (4) back. 5 Loosen two straps (5 and 6). 6 Remove ratchet (7). 7 Disengage locking pin (8). REAR FRONT 2 3 4 5 6 7 8 Projectile extractor is shown in retracted position. 1 NOTE GUIDE INSERTS EXTENDED GUIDE INSERTS RETRACTED