Ford COUGAR 1968 Shop Manual page 207

PART 7-2
-
C4
Automatic Transmission
Power Flow Neutral
In neutral (Fig. 9) the clutches or
bands are not applied, therefore, no
power is transmitted to the output
shaft.
Power Flow First Gear
In low gear (Fig. 9), the forward
clutch is applied, and the planet one-
way clutch or low-reverse band i s
holding the low-reverse drum and re-
verse planet carrier from rotating.
The power flow is through the input
shaft and into the forward clutch.
The input shaft is splined to and
drives the forward clutch cylinder.
Rotation of the forward clutch
drives the forward clutch hub and
ring gear. The ring gear rotates the
forward planet gears clockwise to
cause the sun gear to rotate counter-
clockwise.
Counterclockwise rotation of the
sun gear turns the reverse planet
gear clockwise. The reverse planet
carrier being splined to the low-re-
verse drum is held from rotating by
the one-way clutch or low-reverse band.
With the reverse planet carrier
held stationary, the clockwise rota-
tion of the reverse planet gears ro-
tates the reverse ring gear and hub
clockwise. The hub of the reverse
ring gear is splined to the output
shaft and rotates the output shaft
clockwise.
The output shaft rotation is at a
reduced speed, compared to the in-
put shaft rotation, but a t an in-
creased torque.
The output shaft rotation a t a re-
duced speed is caused by the fact that
the forward planet carrier rotates at
the same speed of the output, shaft
and in the same direction since the car-
rier is splined to the output shaft.
The forward ring gear and planet
assembly are rotating in the
same direction, but the planet carrier
is rotating a t a slower speed than
the ring gear. Therefore, the low gear
ratio (torque multiplication) is a com-
bination of the ratios provided by the
forward and reverse planet assemblies.
Power Flow Intermediate Gear
In intermediate gear (Fig. 9), the
forward clutcH is applied and the in-
termediate band is holding the reverse
high clutch drum, input shell and sun
gear from turning.
The power flow is through the in-
~ u t shaft into the forward clutch and
forward front planet assembly ring
STEM
.,-----
STRUTS
V-8 ENGINE
PRESSURE
L
RELEASE PRESSURE
6 CYLINDER ENGINE
PRESSURE
D 1482-C
FIG.
6-Intermediate Servo and Band
PISTON STEM
' SCREW
gear. The sun gear is held from ro-
tating by the intermediate band. This
7-Low-ReverseServoand Band
causes the forward planet pinions to