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 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
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