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 view.
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 plane-
tary 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 inter-
mediate 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.
LOCKUP CLUTCH APPLIED
HIGH---RANGE CLUTCH APPLIED
Torque Path in High---Range, Lockup Drive, No Steer---Schematic View
DIRECTION OF TRAVEL
