Quantcast Figure 24-4. Power Flow through Cross-Drive Transmission in Low Range. (Part A)

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TM 9-8000
Figure 24-4. Power Flow through Cross-Drive Transmission in Low Range. (Part A)
together so they turn as a unit and no hydraulic torque
rotate in the direction shown in figure 24-6 as they are
conversion occurs. Direct mechanical drive is delivered
driven by the reverse-range sun gear. The reverse-range
from the transmission input shaft, through the high-range
planet pinions, in turn, drive the reverse-range
clutch, to the transmission output. The power path is the
gear. Because the reverse-range ring gear is bolted to
same as that shown in figure 24-5, the only difference
the right output ring gear (through the low-range planet
being that there is no speed reduction or torque Increase
carrier), the right output ring gear rotates. The cross-
in the torque converter.
drive shaft, being splined to both the right output ring
gear and the left output ring gear, carries the rotary
d. Reverse Range. When the driver places the range
motion to the left output ring gear so that both ring gears
control valve in reverse, oil pressure is directed to the
drive through their respective output planetary systems
reverse-range clutch, causing it to engage. The reverse-
to drive the two output flanges. Note that the direction of
range clutch hub and reverse-range planet carrier are
rotation is reversed as compared to the two forward
held stationary. This causes the reverse-range planet
driving ranges (low and high) shown in TA233726


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