TM-9-2350-311-34-2 Maintenance Manual for Volume 2 M109 Cab Download
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TM 9-2350-311-34-2 b. Inspection 1 Measure outside diameter of breech cam pin (5) bearing surface. Replace if less than 0.748 inch (18.999 mm). 2 Measure inside diameter of left hinge pinhole of breech cam (6). Replace breech cam if greater than 0.7505 inch (19.06 mm). 3 Inspect breech cam (6). Replace if there are any cracks or if cam path is distorted. c. Assembly/Installation 1 Install cam stop (16), flat washer (15), and new self-locking nut (14) at mount below hinge (11). 5-51