TM-9-2350-311-34-2 Maintenance Manual for Volume 2 M109 Cab Download
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TM 9-2350-311-34-2 1-14 LOCATION AND DESCRIPTION OF MAJOR COMPONENTS - CONTINUED 1-14.13 Location and Description of Panoramic Telescope Ballistic Cover The purpose of the panoramic telescope ballistic cover (1) is to prevent muzzle blast from entering the crew compartment and to protect the gunner and telescope from inclement weather and small arms fire. The panoramic telescope ballistic cover is mounted on race rings (2) and bearing balls to give 360° traverse. It can be locked in any position by two setscrews or rotated manually by two webbing straps. Traverse of the panoramic telescope ballistic cover is independent of the M117/M117A2 panoramic telescope. 1-32