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. 61 Interval Weekly Table 2-1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR M109 SELF-PROPELLED HOWITZER - CONTINUED Location Item to Check/ Service Track Tension 2-78 Change 2 Crewmember Procedure DRIVER Move vehicle back and forth several times on level ground. Stop by shifting transmission shift control to N and coasting to a stop. Turn off engine. Mea- sure distance between top of the third road wheel (1) and the track (2). The distance should be 1/4 inch (6.3 mm). If not, adjust track tension. CAUTION When increasing track tension, do not let track adjuster extend beyond 3-1/2 inches (8.89 cm) to avoid track adjuster damage. NOTE When track adjuster has reached the maxi- mum extended limit of 3-1/2 inches (8.89 cm), remove one track shoe and readjust track ten- sion. To increase track tension, pump grease (item 17, Appx D) into clean lubrication fitting (3) on track adjuster (4) until correct tension is obtained. Not Fully Mission Capable If: Track tension will not adjust.