Chrysler Vehicle User Manual page 1212

TJ
AUTOMATIC TRANSMISSION - 42RLE (Continued)
FOURTH GEAR POWERFLOW
In fourth gear input torque is through the over-
drive clutch which drives the front carrier (Fig. 6).
The 2/4 clutch is applied to hold the front sun gear.
As the overdrive clutch rotates the front carrier, it
causes the pinions of the front carrier to walk around
the stationary front sun gear. This causes the front
1 - OVERDRIVE CLUTCH APPLIED (Turns Rear Sun)
2 - 2-4 CLUTCH APPLIED (Holds Front Sun)
AUTOMATIC TRANSMISSION - 42RLE
carrier pinions to turn the front annulus/rear carrier
assembly which provides output torque. In fourth
gear, transmission output speed is more than engine
input speed. This situation is called overdrive and
the gear ratio is 0.69:1.
Fig. 6 Fourth Gear Powerflow
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