Fig. 8: 4th Gear Prime Power Flow
Courtesy of CHRYSLER LLC
In Fourth Prime, the UD clutch (1) is applied to drive the rear sun gear. The UD hub is splined to the rear sun
gear. When the UD clutch is applied, the UD hub and rear sun gear are driven. The 2/4 clutch (2) is applied to
hold the front sun gear. The rear carrier/front annulus rotates as an output member with a reduction gear ratio of
1.57:1.
Power from the main centerline transfers to the underdrive compounder gear set annulus by way of the transfer
gears and the underdrive shaft. The direct clutch (3) is applied to drive the underdrive compounder sun gear at
the same speed as the underdrive annulus. With two members driven, the underdrive compounder gear set
operates in direct, or 1:1.
The main centerline ratio of 1.57:1 is multiplied by the underdrive compounder centerline ratio of 1:1. As a
result, the ratio through the entire gear train to the final drive in Fourth Prime is 1.573:1.
FOURTH GEAR
2009 Chrysler Town & Country LX
2009 AUTOMATIC TRANSMISSION 62TE - Service Information - Grand Caravan, Town & Country
steve
Monday, May 23, 2011 1:26:07 PM Page 9 © 2006 Mitchell Repair Information Company, LLC.
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