TM-9-2520-215-34

TM 9--2520--215--34

0005 00--23

THEORY OF OPERATION -- CONTINUED

0005 00

TORQUE PATHS THROUGH TRANSMISSION – Continued

Torque Path in High Range, Lockup, No Steer

NOTE

Refer to Torque Path in High Range, Lockup Drive, No Steer and Action of Hydraulic System,

High Range, No Steer Schematic Views.

When in high range lockup drive, no steer, the engine transmits torque to the turbine shaft through the lockup clutch.

The intermediate range clutch holds the intermediate planetary ring gear stationary. The intermediate planetary sun

gear, being applied to the turbine shaft, rotates and forces the intermediate pinions to rotate within the ring gear. The

intermediate range planetary carrier, to which the pinions are attached, rotates. The low range planetary ring gear is

connected to the intermediate range carrier and also rotates.

The high range clutch is engaged, locking the intermediate range planetary ring gear to the high range clutch hub.

The hub is splined to the turbine shaft. The ring gear rotates as a unit with the turbine shaft and hub. The intermedi-

ate and low range planetary sun gears also are splined to the turbine shaft.

The entire group rotates as a unit, since there cannot be any relative motion of the intermediate and low range

planetary components. The torque path through the remainder of the transmission is as described in Torque Path in

Low Range, Converter Drive, No Steer. Refer to this work package for the ratios of the gears involved in high range

operation.

Torque Path in High Range, Lockup Drive, No Steer Schematic View

HIGH RANGE CLUTCH APPLIED

LOCKUP CLUTCH APPLIED

DIRECTION OF TRAVEL

07i221m

TM-9-2520-215-34 - Page 51 of 508