Jeep Grand Cherokee WK. Manual — part 1471
CLUTCH APPLICATION
GEAR
RATIO
B1
B2
B3
K1
K2
K3
F1
F2
1
3.59
X*
X
X*
X
X
2
2.19
X
X
X*
X
3
1.41
X
X
X
4
1.00
X
X
X
5
0.83
X
X
X
X*
N
X
X
R
3.16
X*
X
X
X
R (4WD
Low or
Limp-in)
1.93
X
X
X
* = The shift components required during coast.
FIRST GEAR POWERFLOW
1 - TORQUE CONVERTER LOCK-UP CLUTCH
14 - CENTER PLANETARY CARRIER
2 - TORQUE CONVERTER TURBINE
15 - REAR PLANETARY CARRIER
3 - TORQUE CONVERTER IMPELLER
16 - TORQUE CONVERTER STATOR
4 - HOLDING CLUTCH B1
17 - FRONT PLANETARY PINION GEARS
5 - HOLDING CLUTCH B3
18 - CENTER PLANETARY PINION GEARS
6 - HOLDING CLUTCH B2
19 - REAR PLANETARY PINION GEARS
7 - DRIVING CLUTCH K1
20 - FREEWHEELING CLUTCH F1
8 - FRONT PLANETARY ANNULUS GEAR
21 - FRONT PLANETARY SUN GEAR
9 - DRIVING CLUTCH K2
22 - CENTER PLANETARY SUN GEAR
10 - CENTER PLANETARY ANNULUS GEAR
23 - REAR PLANETARY SUN GEAR
11 - REAR PLANETARY ANNULUS GEAR
24 - FREEWHEELING CLUTCH F2
12 - DRIVING CLUTCH K3
25 - INPUT SHAFT
13 - FRONT PLANETARY CARRIER
26 - OUTPUT SHAFT
A - ENGINE SPEED
D - SECOND GEAR RATIO
B - TRANSMISSION INPUT SPEED
E - THIRD GEAR RATIO
C - FIRST GEAR RATIO
F - FIXED PARTS
21 - 694
AUTOMATIC TRANSMISSION - NAG1 - SERVICE INFORMATION
WK
Torque from the torque converter is increased via the input shaft (25) and all three planetary gearsets and trans-
ferred to the output shaft (26).
Front Planetary Gear Set
The annulus gear (8) is driven by the input shaft (25). The sun gear (21) is held against the housing by the locked
freewheel F1 (20) during acceleration and via the engaged multiple-disc holding clutch B1 (4) during deceleration.
The planetary pinion gears (17) turn on the fixed sun gear (21) and increase the torque from the annulus gear (8)
to the planetary carrier (13). The planetary carrier (13) moves at a reduced speed in the running direction of the
engine.
Rear Planetary Gear Set
The annulus gear (11) turns at a reduced speed due to the mechanical connection to the front planetary carrier (15).
The sun gear (23) is held against the housing by the engaged multiple-disc holding clutch B2 (6), by the locked
freewheel F2 (24) during acceleration and by the engaged multiple-disc clutch K3 (12) during deceleration. The
planetary gears (19) turn on the fixed sun gear (23) and increase the torque from the annulus gear (11) to the
planetary carrier (15). The planetary carrier (15) moves at a reduced speed in the running direction of the engine.
1 - TORQUE CONVERTER LOCK-UP CLUTCH
14 - CENTER PLANETARY CARRIER
2 - TORQUE CONVERTER TURBINE
15 - REAR PLANETARY CARRIER
3 - TORQUE CONVERTER IMPELLER
16 - TORQUE CONVERTER STATOR
4 - HOLDING CLUTCH B1
17 - FRONT PLANETARY PINION GEARS
5 - HOLDING CLUTCH B3
18 - CENTER PLANETARY PINION GEARS
6 - HOLDING CLUTCH B2
19 - REAR PLANETARY PINION GEARS
7 - DRIVING CLUTCH K1
20 - FREEWHEELING CLUTCH F1
8 - FRONT PLANETARY ANNULUS GEAR
21 - FRONT PLANETARY SUN GEAR
9 - DRIVING CLUTCH K2
22 - CENTER PLANETARY SUN GEAR
10 - CENTER PLANETARY ANNULUS GEAR
23 - REAR PLANETARY SUN GEAR
11 - REAR PLANETARY ANNULUS GEAR
24 - FREEWHEELING CLUTCH F2
12 - DRIVING CLUTCH K3
25 - INPUT SHAFT
13 - FRONT PLANETARY CARRIER
26 - OUTPUT SHAFT
A - ENGINE SPEED
D - SECOND GEAR RATIO
B - TRANSMISSION INPUT SPEED
E - THIRD GEAR RATIO
C - FIRST GEAR RATIO
F - FIXED PARTS
WK
AUTOMATIC TRANSMISSION - NAG1 - SERVICE INFORMATION
21 - 695
Center Planetary Gear Set
The annulus gear (10) is driven at the same speed as the rear planetary carrier (15) as a result of a mechanical
connection. The sun gear (22) is held against the housing by the multiple-disc holding clutch B2 (6). The planetary
pinion gears (18) turn on the fixed sun gear (22) and increase the torque from the annulus gear (10) to the plan-
etary carrier (14). The output shaft (26) connected to the planetary carrier (14) turns at a reduced speed in the
running direction of the engine.
SECOND GEAR POWERFLOW
1 - TORQUE CONVERTER LOCK-UP CLUTCH
14 - CENTER PLANETARY CARRIER
2 - TORQUE CONVERTER TURBINE
15 - REAR PLANETARY CARRIER
3 - TORQUE CONVERTER IMPELLER
16 - TORQUE CONVERTER STATOR
4 - HOLDING CLUTCH B1
17 - FRONT PLANETARY PINION GEARS
5 - HOLDING CLUTCH B3
18 - CENTER PLANETARY PINION GEARS
6 - HOLDING CLUTCH B2
19 - REAR PLANETARY PINION GEARS
7 - DRIVING CLUTCH K1
20 - FREEWHEELING CLUTCH F1
8 - FRONT PLANETARY ANNULUS GEAR
21 - FRONT PLANETARY SUN GEAR
9 - DRIVING CLUTCH K2
22 - CENTER PLANETARY SUN GEAR
10 - CENTER PLANETARY ANNULUS GEAR
23 - REAR PLANETARY SUN GEAR
11 - REAR PLANETARY ANNULUS GEAR
24 - FREEWHEELING CLUTCH F2
12 - DRIVING CLUTCH K3
25 - INPUT SHAFT
13 - FRONT PLANETARY CARRIER
26 - OUTPUT SHAFT
A - ENGINE SPEED
D - SECOND GEAR RATIO
B - TRANSMISSION INPUT SPEED
E - FIXED PARTS
C - FIRST GEAR RATIO
21 - 696
AUTOMATIC TRANSMISSION - NAG1 - SERVICE INFORMATION
WK
Torque from the torque converter is increased via the input shaft (25) and the center and rear planetary gearset and
transferred to the output shaft (26).
Front Planetary Gear Set
The planetary carrier (13) and sun gear (21) are connected via the engaged multiple-disc clutch K1 (7). The plan-
etary gearset is therefore blocked and turns as a closed unit at the input speed due to the mechanical connection
of the annulus gear (8) and input shaft.
Rear Planetary Gear Set
The annulus gear (11) turns at the input speed as a result of the mechanical connection to the front planetary carrier
(13). The sun gear (23) is held against the housing by the engaged multiple-disc holding clutch B2 (6), by the
locked freewheel F2 (24) during acceleration and by the engaged multiple-disc clutch K3 (12) during deceleration.
The planetary pinion gears (19) turn on the fixed sun gear (23) and increase the torque from the annulus gear (11)
to the planetary carrier (15). The planetary carrier (15) moves at a reduced speed in the running direction of the
engine.
1 - TORQUE CONVERTER LOCK-UP CLUTCH
14 - CENTER PLANETARY CARRIER
2 - TORQUE CONVERTER TURBINE
15 - REAR PLANETARY CARRIER
3 - TORQUE CONVERTER IMPELLER
16 - TORQUE CONVERTER STATOR
4 - HOLDING CLUTCH B1
17 - FRONT PLANETARY PINION GEARS
5 - HOLDING CLUTCH B3
18 - CENTER PLANETARY PINION GEARS
6 - HOLDING CLUTCH B2
19 - REAR PLANETARY PINION GEARS
7 - DRIVING CLUTCH K1
20 - FREEWHEELING CLUTCH F1
8 - FRONT PLANETARY ANNULUS GEAR
21 - FRONT PLANETARY SUN GEAR
9 - DRIVING CLUTCH K2
22 - CENTER PLANETARY SUN GEAR
10 - CENTER PLANETARY ANNULUS GEAR
23 - REAR PLANETARY SUN GEAR
11 - REAR PLANETARY ANNULUS GEAR
24 - FREEWHEELING CLUTCH F2
12 - DRIVING CLUTCH K3
25 - INPUT SHAFT
13 - FRONT PLANETARY CARRIER
26 - OUTPUT SHAFT
A - ENGINE SPEED
D - SECOND GEAR RATIO
B - TRANSMISSION INPUT SPEED
E - FIXED PARTS
C - FIRST GEAR RATIO
WK
AUTOMATIC TRANSMISSION - NAG1 - SERVICE INFORMATION
21 - 697
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