Torque Path in Reverse---Range, Converter Drive, Right Steer---Schematic View

TM 9--2520--215--34 0005 00--13 THEORY OF OPERATION -- CONTINUED 0005 00 HYDRAULIC SYSTEM – Continued Action Of Hydraulic System In Neutral, Converter Drive, Right Steer NOTE Refer to Torque path in Reverse Range, Converter Drive, Right Steer schematic view for Torque Path through the transmission. The description for neutral--range operation applies to this paragraph. The only differences are that pressure is not blocked at the steer control valve, and the lubrication pressure is not blocked at the right steer clutch. At the steer control valve, the right (lower) valve moves to the right, while the left (upper) valve moves to the left. The movement of the left valve to the left has no effect. Steer pressure remains blocked at that point. However, the movement of the right valve to the right allows pressure to be directed to the right steer clutch. When pressure enters the central area of the steer valve, it flows to the area at the right end of the valve. This pressure opposes rightward movement, regulating the pressure flowing to the right steer clutch. Thus a limited rightward movement of the steer control will result in a limited steer apply pressure. Further movement will increase the applied pressure. Partial to full steer is available. The degree of steer is proportional to the movement of the vehicle steer con- trol. In partial steer, the steer clutch is slipping but operating. In full steer clutch is completely applied and there is no slippage. When the right steer clutch is applied, the right steer clutch lubrication valve opens. This permits lubricating oil to flow over steer clutch plates. DIRECTION OF TRAVEL LEFT---STEER CLUTCH APPLIED REVERSE---RANGE CLUTCH APPLIED FASTER ROTATION SLOWER ROTATION Torque Path in Reverse---Range, Converter Drive, Right Steer---Schematic View