TM-9-2520-215-34

TM 9--2520--215--34

0005 00--25

THEORY OF OPERATION -- CONTINUED

0005 00

TORQUE PATHS THROUGH TRANSMISSION – Continued

Torque Path in Reverse Range, Converter Drive, No Steer

NOTE

Refer to Torque Path in Reverse Range, Converter Drive, No Steer Schematic View and

Action of the Hydraulic System in Reverse Range, Converter Drive, No Steer Schematic

Views.

When in reverse range, converter drive, no steer, the engine transmits torque to the turbine shaft hydraulically,

through the converter. The action of the steer gear system is as described in Torque Path in Low Range, Converter

Drive, No Steer.

The reverse range clutch is engaged, locking the reverse range planetary ring gear in a stationary position. In reverse

range, two planetary gear sets are compounded to obtain reverse. These are low range and reverse range.

The primary driving member of this compound arrangement is the low range sun gear. The reaction member in the

low range planetary is the carrier. The driven member is the low range ring gear. The reverse range sun gear is

connected to the low range ring gear and is the driving member in the reverse range planetary. The reaction driven

member is the carrier, of which the pinions and output bevel drive gear are components.

Reverse rotation actually occurs in the low range planetary while speed is further reduced in the reverse range

planetary.

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 the reverse range operation.

07i216m

Torque Path in Reverse Range, Converter Drive, No Steer Schematic View

REVERSE RANGE

CLUTCH APPLIED

DIRECTION OF TRAVEL

TM-9-2520-215-34 - Page 53 of 508