Torque Path In Neutral, Converter Drive, Right Steer

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

Torque Path in High---Range, Lockup Drive, Left Steer---Schematic - TM-9-2520-215-34_51

TM-9-2520-215-34 Recovery Vehicle Full Tracked: Heavy M88A2 (NSN 2350 01 290 4683) Manual
Page Navigation
39

TM 9--2520--215--34 0005 00--26 THEORY OF OPERATION -- CONTINUED 0005 00 TORQUE PATHS THROUGH TRANSMISSION – Continued Torque Path In Neutral, Converter Drive, Right Steer NOTE Refer to Torque Path In Neutral, Converter Drive, No Steer and Hydraulic System, Neutral Converter Drive Right Steer Refer to Torque Path in Neutral, Converter Drive, No Steer for the explanation of conditions in neutral. The explanations below are expanded to included steer action in neutral. To obtain steer in neutral, the engine speed must be sufficient to cause rotation of the turbine (by converter action). When the converter shaft rotates, the steer gear train rotates. Thus, counterclockwise rotation is imparted to both right and left steer--clutch drive gears. The right steer clutch is engaged, locking the right steer--planetary sun gear to the steer--clutch drive gear. This causes the sun gear to rotate counterclockwise also. An idler gear, in mesh with the right tie--shaft drive gear and tie--shaft pinion, rotates clockwise. This drives the tie shaft counterclockwise. A pinion at the left end of the tie shaft, in mesh with the left tie--shaft drive gear, rotates the left tie--shaft drive gear and left steer--planetary sun gear clockwise. The right and left steer--planetary sun gears rotate in opposite directions instead of remaining stationary as they do in straight travel. In neutral, the steer--planetary ring gears are stationary. They become reaction members while the normally stationary sun gears become the driving members. Since the right steer--planetary sun gear rotates counterclockwise, the carrier is also forced to rotate counter- clockwise, within the stationary ring gear. This causes the transmission output to rotate counterclockwise, driving the right vehicle track in reverse. The left output--steer sun gear rotates clockwise, causing the output rotation at the left side to be clockwise. The left vehicle track is driven forward. The tendency of the right and left steer--planetary ring gears to rotate is canceled. This happens because the gears are splined to the driven bevel gear shaft and their reac- tions are in opposite directions. In neutral steer, the vehicle will pivot around its center without forward or reverse movement. Refer to this work package for the ratios involved in neutral steer. Torque Path in Neutral, Converter Drive, No Steer---Schematic View

Privacy Statement
Press Release
Contact