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 Item No. 28 Interval Before Table 2-1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR M109 SELF-PROPELLED HOWITZER — CONTINUED Location Item to Check/ Service M15 ASSISTANT GUNNER Elevation Quadrant Crewmember Procedure a. b. Before firing, check all knobs and handwheels (1) for damage and verify freedom of move- ment. Ensure level vials (2) are legible and free of cracks or breaks. Check counters (3) to make sure viewing win- dows are not broken and numbers are legible, move freely, and do not skip. Not Fully Mission Capable If: 2-47