TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
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TM 9–2350–311–20–2 Change 2 3–11 a. BREECH MECHANISM — CONTINUED (3) BREECH DOES NOT OPEN AUTOMATICALLY AFTER FIRING. INITIAL SETUP Tools Artillery and turret mechanic’s tool kit (SC 5180–95–CL–A12) References TM 9–2350–311–10 Check vertical and horizontal adjustment of operating cam, cradle cam stop (para 5–12) and damper assembly (para 5–11). Are either operating cam or damper assembly out of adjustment? Attempt to open breech manually. Does the breech open? Inspect operating crank rollers and operating cam for damage. Are either operating crank rollers or operating cam damaged? A B yes no Go to para 3–3a.(1). Notify support maintenance. yes no C CONTINUED ON NEXT PAGE yes no Adjust operating cam, cradle cam stop (para 5–12) and damper assembly (para 5–11). If malfunction per- sists, inspect damper as- sembly springs and replace if necessary (para 5–11).