TM-9-2520-238-34
M113A1 FOV, M113A2 FOV, M548 AND M548A1
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL; RIGHT ANGLE DRIVE, COOLING FAN; GEARCASE, TRANSFER; DRIVE ASSEMBLY, FINAL; DIFFERENTIAL, STEERING CONTROL; BRAKE, SINGLE DISK; CYLINDER ASSEMBLY, HYDRAULIC BRAKE
TM-9-2520-238-34 - Page 24 of 319
TM 9-2520-238-34
EQUIPMENT DESCRIPTION AND DATA — Continued
0002 00
CARRIER MOVING TO LEFT WITH LEFT STEERING BRAKE APPLIED.
When left brake is applied, the external spur gears
and spur gearshafts continue to rotate at the same velocity. Since the brake impedes or even stops the rotation of the brake
drum hub, the left external gears, in mesh with the hub gear, begin to rotate on their own axes. The gearshafts, fixed to the
external gears, rotate in a direction which slows the rotation of the left steering spur gear, and the track speed on the left side
of the carrier decreases. At the same time, the right gearshafts, in mesh with companion left gearshafts, rotate in the opposite
direction, which speeds rotation of right steering spur gear, and increases track speed on right side of carrier.
Steering Control Differential Left Steer Torque Path
0002 00-9
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