Downloaded from www.Manualslib.com manuals search engine 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, and a control
valve body.
The torque converter houses a pump, turbine, pressure plate which is
splined to the turbine, and a stator assembly, serving as a fluid coupling, it
smoothly transmits power from the engine to the transaxle.
It also
hydraulically provides additional torque when required. When applied,
the pressure plate provides a mechanical direct drive coupling
of the
engine to the transaxle.
The two planetary gear sets provide the four forward gear ratios and
reverse. Changing
of the gear ratios is fully automatic and is
accomplished through the use of various electronic and mechanical
requirements. Four multiple disc clutches, two roller clutches, a sprag
clutch, and three bands provide the friction elements required to obtain
the various ratios with the planetary gear sets.
A hydraulic system (the control valve body), pressurized by a vein type
pump provides the working pressure needed to operate the friction
elements and automatic controls.
341
