Chrysler Sebring 2004 Service Manual page 1495

21 - 234 41TE AUTOMATIC TRANSAXLE
TORQUE CONVERTER (Continued)
TORQUE CONVERTER CLUTCH (TCC)
The TCC (Fig. 314) was installed to improve the
efficiency of the torque converter that is lost to the
slippage of the fluid coupling. Although the fluid cou-
pling provides smooth, shock–free power transfer, it
is natural for all fluid couplings to slip. If the impel-
ler and turbine were mechanically locked together, a
zero slippage condition could be obtained. A hydraulic
piston was added to the turbine, and a friction mate-
rial was added to the inside of the front cover to pro-
vide this mechanical lock-up.
OPERATION
The converter impeller (Fig. 315) (driving member),
which is integral to the converter housing and bolted
to the engine drive plate, rotates at engine speed.
The converter turbine (driven member), which reacts
from fluid pressure generated by the impeller, rotates
and turns the transmission input shaft.
1 - APPLY PRESSURE
2 - THE PISTON MOVES SLIGHTLY FORWARD
Fig. 315 Torque Converter Fluid Operation
Fig. 314 Torque Converter Clutch (TCC)
1 - IMPELLER FRONT COVER
2 - THRUST WASHER ASSEMBLY
3 - IMPELLER
4 - STATOR
5 - TURBINE
6 - PISTON
7 - FRICTION DISC
3 - RELEASE PRESSURE
4 - THE PISTON MOVES SLIGHTLY REARWARD
JR