Dodge RAM 1500 1998 Owner's Manual page 1962

DR
TORQUE CONVERTER (Continued)
OPERATION
The converter impeller (Fig. 233) (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. 233 Torque Converter Fluid Operation
AUTOMATIC TRANSMISSION - 48RE
TURBINE
As the fluid that was put into motion by the impel-
ler blades strikes the blades of the turbine, some of
the energy and rotational force is transferred into the
turbine and the input shaft. This causes both of them
(turbine and input shaft) to rotate in a clockwise
direction following the impeller. As the fluid is leav-
ing the trailing edges of the turbine's blades it con-
tinues in a "hindering" direction back toward the
impeller. If the fluid is not redirected before it strikes
the impeller, it will strike the impeller in a direction
that would tend to slow it down.
3 - RELEASE PRESSURE
4 - THE PISTON MOVES SLIGHTLY REARWARD
21 - 259