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PART 7-3- F. M. X. AUTOMATIC TRANSMISSION
7-99
Power Row-Third Gear
In third gear, the primary and sec-
ondary sun gears are locked together
and driven as a unit (Fig.30). There-
fore, the pinions cannot rotate and
the entire planetary train revolves as a
unit, which causes the output shaft to
rotate at the same speed as the turbine
shaft.
FRONT
BAND
NEUTRAL
REAR BAND
FIRST GEAR D
REAR CLUTCH
APPLIED
THIRD GEAR
FIG. 30 -Power Flow
Power Row-Revene
Reverse gear is obtained by driv-
ing the secondary sun gear and
hold-
ing the pinion carrier (Fig.
30)-
The
secondary pinions drive the internal
gear in the reverse direction. The pri-
mary sun gear and the primary pinions
rotate freely and have no effect on the
gear
train.
REAR
BAND
REAR CLUTCH
RELEASED
REAR BAND
RELEASED
ONE-WAY
CLUTCH
ENGAGED
-
REAR CLUTCH
RELEASED
POWER FLOW . . .
ROTATION
-
Power Row-Park Position
When the selector lever is in the
P (park) position, the parking pawl
engages the external teeth on the in-
ternal gear to lock the internal gear
and output shaft to the case. This
locks the rear wheels to prevent move-
ment of the
vehicle.
REAR BAND
APPLIED
FIRST GEAR
I
FRONT BAND
APPLIED
SECOND GEAR
FRONT BAND
RELEASED
PINION CARRIER
OVERRUNNING
ONE-WAY CLUTCH
REAR BAND
APPLIED
FRONT BAND
REVERSE GEAR
RELEASED
-
0 1136
-
B
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