TURBINE
As the fluid that was put into motion by the impeller 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 leaving the trailing edges of the turbine’s
blades it continues 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 such a direction that it would tend to slow it down.
STATOR
Torque multiplication is achieved by locking the sta-
tor’s over-running clutch to its shaft. Under stall condi-
tions (the turbine is stationary), the oil leaving the
turbine blades strikes the face of the stator blades and
tries to rotate them in a counterclockwise direction.
When this happens the over-running clutch of the sta-
tor locks and holds the stator from rotating. With the
stator locked, the oil strikes the stator blades and is
redirected into a “helping” direction before it enters the
impeller. This circulation of oil from impeller to turbine,
turbine to stator, and stator to impeller, can produce a
maximum torque multiplication of about 2.0:1. As the
turbine begins to match the speed of the impeller, the
fluid that was hitting the stator in such as way as to
cause it to lock-up is no longer doing so. In this con-
dition of operation, the stator begins to free wheel and
the converter acts as a fluid coupling.
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AUTOMATIC TRANSMISSION - NAG1 - SERVICE INFORMATION
WK