Spicer Single Drive Axles Service Manual: S110 and S130 - Manual (Page 51)

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Torque Flow
Torque Flow
While driving with equal load on and equal traction under both
drive wheels, the Truetrac differential provides equal torque to
each wheel.
1 - Torque flow distribution while operating with
equal loading and ground coefficient
With unequal load and/or traction on each drive wheel, a
major portion of the torque will be transferred from one side
to the other to reduce the chance of a one wheel spin out.
1 - Torque flow distribution with less load over or
ground coefficient under left wheel
1
1