TM 5-3825-226-24
CLUTCH NO.
OPERATION
No.1
Forward Direction
(fourth speed)
No. 2
Reverse Direction
No. 3
Forward Direction
No. 4
Third Speed
No. 5
Second and Fourth Speeds
No. 6
First Speed
Most all the components inside the planetary
transmission turn when the controls are in each
FORWARD
or
REVERSE
speed.
Only
these
components that have been made dark in the
illustrations that follow are used in the flow of power
through the transmission.
FIRST SPEED FORWARD
POWER FLOW THROUGH TRANSMISSION
IN FIRST SPEED FORWARD
(No. 3 and No. 6 Clutches Engaged.)
The No. 3 clutch ring gear is held stationary.
This causes the No. 3, No. 4 and No. 5 carriers and
No. 6 clutch to turn. Since the No. 6 clutch is engaged,
torque is sent to the No. 6 clutch gear and output shaft.
SECOND SPEED FORWARD
The No. 3 clutch ring gear is held stationary.
This causes the No. 3, No. 4 and No. 5 carriers to
rotate. The No. 5 clutch ring gear is held stationary by
the engaged No. 5 clutch. The No. 5 planet gears turn
around the inside of the No. 5 clutch ring gear driving
the No. 5 sun gear which in turn drives the No. 6 clutch
gear and output shaft.
POWER FLOW THROUGH TRANSMISSION
IN SECOND SPEED FORWARD
(No. 3 and No. 5 Clutches Engaged.)
THIRD SPEED FORWARD
POWER FLOW THROUGH TRANSMISSION
IN THIRD SPEED FORWARD
(No. 3 and No. 4 Clutches Engaged.)
The No. 3 clutch ring gear is held stationary by
the No. 3 clutch. The No. 4 clutch ring gear is held
stationary by the No. 4 clutch. The No. 3 sun gear
drives the No. 3 planet gears which turn around the
inside of the No. 3 clutch ring gear to rotate the No. 3
carrier. The No. 4 planet gears are driven around the
inside of the stationary No. 4 clutch ring gear and drive
the No. 4 sun gear, No. 6 clutch gear and output shaft.
FOURTH SPEED FORWARD
The No. 1 clutch holds the No. 2 carrier to the
input shaft which causes the No. 2 and No. 3 ring
gears, carriers, and carrier ring gears to turn at
transmission input speed. The rotation of the No. 3 and
No. 4 carriers send torque to the No. 4 ring gear and
sun gear. When the No. 5 ring gear is held stationary
by the No. 5 clutch, torque is sent by the No. 4 and No.
5 sun gears to the output shaft.
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