TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
Page 937 of 1275
TM 9-2350-311 -20-1 10-8 TRACK TENSION — CONTINUED b. Adjusting CAUTION Do not allow track adjuster to extend more than 3.5 in. (8.9 cm). Remove a shoe to shorten track if necessary. 1 Clean input pressure fitting (3). 2 Add grease until distance from top of third road wheel (2) to bottom of track (1) is 0.25 in. (6.4 mm). 3 To increase track tension, raise track (1) away from third road wheel (2). 4 To decrease track tension, slowly loosen bleed plug (4). 5 Allow lubricant to escape until track (1) hangs loose. 6 Clean off excess lubricant. 7 Tighten bleed plug (4). 8 Adjust track to desired tension. Increase track tension to achieve 0.25-in. (6.4-mm) measurement between road wheel and track. 10-20