TM-9-2350-311-24P-2 Parts Manual Volume 2 for M109 Cab Download
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SECTION II TM 9-2350-311-24P-2 *NOTE: Vehicles with serial numbers 2 thru 4884 (M109A3) use part numbers MS18153-139 (Item 2) and 8449198 (Item 3). Vehicles with serial numbers 4885 or higher (M109A2) use part numbers MS18153-117 (Item 2) and 11636277 (Item 3). Figure 52. Elevation Mechanism Assembly, 11636282 or 12576115