TM-9-2350-275-BD
M113 FAMILY CARRIER, PERSONNEL SELF-PROPELLED FULL-TRACKED
TECHNICAL MANUAL; OPERATORS, ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE; BATTLEFIELD DAMAGE ASSESSMENT AND REPAIR
TM-9-2350-275-BD - Page 95 of 223
TM 9-2350-275-BD
TRACK AND SUSPENSION
SECTION III. Drive Sprocket and Roadwheels
8-6. DRIVE SPROCKET OR HUB BOLTS SHEARED
General Information
Loosening of bolts which hold the drive sprocket carrier to the final drive output hub
may cause the bolts to be sheared.
Operation may continue with as few as five (5) bolts
remaining, provided that they are equally spaced around the hub. If the hub is welded
or less than a full set of bolts is used, do not use pivot steer. The side stresses may
cause the sprocket to shear again. The drive sprockets can also be remounted using this
same procedure.
Limitations:
●
Degraded mobility
Personnel/Time Required:
●
2 soldiers
●
1-2 hours
Materials/Tool:
●
Arc welder
●
5/8 in x 1-3/4 in cap screws
●
Use bolts from the opposite
Procedural Steps:
1. Attempt to remove the
sheared bolt.
2. If four or less bolts remain, or if three or more consecutive bolts are missing due to
damaged bolt holes, weld the sprocket wheel to the final drive output hub.
3. Adjust track tension.
4. Record the BDAR action taken. When the mission is completed, as soon as
practicable, repair the vehicle using standard maintenance procedures.
8-7
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