TM-9-2350-311-34-1 Maintenance Manual for Volume 1 M109 Hull Download
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TM 9-2350-311-34-1 1.12.2 Serial Number Locations NOTE • The M109A2, M109A3, M109A4, and M109A5 Howitzers have similar data plates. • Engine serial number and model are stamped on the right upper front comer of the cylinder block. 1-13