TM-9-2350-358-BD M109A6 Battlefield Damage Assessment and Repair Download
Page 206 of 343
TM 9-2350-358-BD 10-8. ROADWHEEL, DAMAGED OR MISSING -CONTINUED 1. Rearrange roadwheels as necessary. 2. Record the BDAR action taken. When mission is complete, as soon as practical, repair the equipment/system using standard maintenance procedures. 10-9. TORSION BAR, BROKEN Torsion bars are integral parts of the suspension system. They help counter roadwheel upward thrust on rough terrain. Torsion bars have a pre-twist which the bar spring in one direction. To prevent improper installation the bars use a blind spline for alignment purposes. If a first or last support position torsion bar is broken, replace it with one from the intermediate positions. A broken torsion bar must be removed to prevent other damage. Limitations: Degraded suspension. Personnel/Time Required: • 3 soldiers • 1.0 hour References: TM 9-2350-314-20-1-2 Procedural Steps: 1. Break roadwheel nuts before positioning wheels over hole. 2. Position roadwheel arm over a hole, so that tension on torsion bar can be released, if no hole exists, dig a hole. 3. Break track at forward edge of hole and let track drop in hole. 10-8