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TM 9-8000
Figure 25-1. X1100 Transmission-External View
center ring gear rotates the center sun gear via the
25-2 stationary and the center ring gear rotating, the ring
planetary pinions. This sun gear is splined to the sun
gear drives the center planetary carrier pinions. This
gear shaft assembly to which the front sun gear also is
rotates the center planetary carrier at a speed reduction.
splined. The rotating front sun gear rotates the front
This carrier (and also the rear planetary carrier) is
carrier pinions whose carrier is anchored against rotating
splined to the front ring gear and rotates with it as a unit.
by the applied second clutch. In turn, the rotating front
The rear carrier is splined to the range output gear which
carrier pinions rotate the front ring gear, which, along
rotates with the rear carrier at the same speed as the
with the center carrier, is splined, via the front ring gear
center planetary carrier. Figure 25-7 illustrates the power
and rear carrier assembly, to the range output gear.
flow in third range.
Figure 25-6 illustrates the power flow through the X1100
transmission in second range.
f. Fourth Range. In this configuration the forward and
fourth clutches are applied. With the clutches applied,
e. Third Range. In this configuration the forward and
the transmission main shaft and the sun gear shaft are
third clutches are applied. The third clutch application
locked together and rotate as a unit at range Input
anchors the sun gear shaft against rotation, which, in
speed. With the center and rear sun gears rotating at the
turn, prevents the center sun gear (splined to rear of
same speed (locked together), and their carriers splined
shaft) from rotating. The forward clutch application locks
to the front ring gear, all components rotate at range
the range input gear and main shaft together to rotate as
input speed. The transmission range output gear is
a unit. The rear sun gear is splined to both the main shaft
splined to the rear carrier and gives a range output ratio
and the center ring gear and rotates at range input
of 1.00:1. The fourth range power flow is illustrated in


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