Pump Suction Pump Output Torque Converter Apply Pinion Shaft lube x x Torque Converter Off x x C1 Apply Accumulator Back Pressure To Cooler C2 Accumulator C3 Accumulator B3 Accumulator Rear Lube From Cooler (to sump) C2 Apply B3 Apply C3 Apply B2 Apply B1 Apply CASE PASSAGE I.D. Drain-back Check Valve Figure 25 Drain-back Check Valve Spring No. Coils-37 Overall Length-1.500" Outside Diameter- .190" Coil Diameter- .013" Color- None C0 Apply Copyright © 2010 ATSG "  2  0 1 0  ”  S  E  M  I  N A  R  I  N  F O  R  M  A T  I  O  N 115 Automatic Transmission Service Group TOYOTA/LEXUS U150/U250 PRELIMINARY INFORMATION