1993 Cadillac Seville Owner's Manual - Page 355

The Hydra-matic 4T60-E 4-speed overdrive, electronic transaxle consists primarily of a five element torque converter; two planetary gear sets, various clutches, final drive assembly, differential assembly, aand control valve body. The torque converter housesa pump, turbine, pressure plate which is splined to the turbine, anda stator assembly, serving as fluid coupling, it a smoothly transmits power from the engine to the transaxle. It also hydraulically provides additional torque when required. When applied, the pressure plate provides mechanical direct drive coupling the a of engine to the transaxle. The two planetary gearsets provide the four forward gear ratios and reverse. Changingof the gear ratios fully automatic andis is accomplished through the use various electronic and mechanical of requirements. Four multiple disc clutches, roller clutches,a sprag two clutch, andthree bands providethe friction elements requiredto obtain the various ratios with the planetary gear sets. A hydraulic system(the control valve body), pressurized a vane type by pump provides the working pressure needed operate the friction to elements and automatic controls. 341