TM-9-2350-358-BD

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A6

TECHNICAL MANUAL; OPERATOR’S, UNIT, AND DIRECT SUPPORT SUPPORT MAINTENANCE

MARCH 1994

TM-9-2350-358-BD - Page 214 of 343

TM 9-2350-358-BD

10-14. DRIVE SPROCKET BOLTS SHEARED OFF - CONTINUED

Procedural Steps:

NOTE

Track must be disconnected before damaged roadwheels and roadarms are removed.

1.

Remove damaged roadwheels and roadarms that might interfere with track movement.

2.

Disengage torsion bar at most forward roadarm that is to be used.

3.

Move roadarm to a 45 degree forward position and lock in place by engaging torsion bar.

4.

Place track around roadwheels and remove as many track shoes as necessary.

5.

Connect track.

NOTE

Use ground conditions and terrain to as much advantage as possible to help steer vehicle.

Keep

damaged side on hardest surface, if a choice is possible, to get a longer run.

Go up hills at an

angle with damaged side on uphill side.

When going downhill, use brakes or apply power to keep

vehicle going in desired direction.

6.

Drive forward until vehicle swings too far to damaged side.

7.

Place an obstacle (such as a log or damaged roadwheel) behind track on damaged side.

8.

Back up slowly against obstacle until vehicle is headed in desired direction.

9.

Continue forward and repeat steps 8 and 9.

10.

Record the BDAR action taken.

When mission is complete, as soon as practical, repair the equipment/system

using standard maintenance procedures.

10-16