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. 45 Interval After Table 2-1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR M109 SELF-PROPELLED HOWITZER - CONTINUED Location Item to Check/ Service Track Shoes, End Connector, Center Guides, Wedges, Bolts, and Bushings Crewmember Procedure DRIVER a. Check for loose, damaged, or missing end con- nectors (1), center guides (2), track shoes (3), and wedges and bolts (4). b. Check track shoe (3) for damaged pins (5), mis- sing pad nuts, and any unusual gaps between two adjacent track shoes which indicate worn bushings. NOTE Worn bushings are very difficult to locate. Worn bushings will cause the pin to appear off-center. It may have protruding pin or track pad nut and unusual gaps between two adja- cent track shoes. Worn or missing track pads and track pad nuts must be replaced. Notify unit maintenance. c. Check track shoe (3) for damage. Report dam- aged track assembly to unit maintenance. Dam- age includes cracked or broken shoe body and chunked or missing road wheel rubber. Not Fully Mission Capable If: End connectors (1) are missing or cracked. Center guides (2) are missing. Any wedge or bolt (4) is mis- sing. Any one track shoe (3) has worn bushings, protruding pin, or missing track pad nut. Any one bushing deemed unser- viceable. Any track shoe (3) is bent, bro- ken, or cracked. Any pin is bent, broken, or mis- sing. Any one track shoe (3) body is bent, cracked, or broken. 2-65