OPERATION - TM-9-2520-238-340028

TM 9-2520-238-34

EQUIPMENT DESCRIPTION AND DATA -- Continued

0002 00

OPERATION

GENERAL. Understanding the movement of parts in relation the movement of the carrier is important for proper maintenance

of the differential. Each steering function, in relation to the operation of parts when the carrier is moving ahead, is described

below. When the carrier is in reverse, all parts rotate in the opposite direction.

CARRIER MOVING STRAIGHT AHEAD. The right angle gearbox receives torque into the differential, changes torque

direction 90 , and transmits the torque to the left flange of the steering unit assembly. When the carrier is moving straight

ahead, the steering unit assembly revolves as a unit about a central axis. The output shafts and brake drums revolve at the

same velocity as the steering unit, with no change in gear rotation, and the external spur gears and gearshafts do not revolve

on their own axis.

Steering Control Differential Straight Forward Torque Path

0002 00-8