Lexus RX300 (MCU15). Manual — part 564
AUTOMATIC TRANSAXLE
AUTOMATIC TRANSAXLE SYSTEM
AX–1
. . . . . . .
COMPONENT PARTS
AX–3
. . . . . . . . . . . . . . . . . . . .
OIL PUMP
AX–55
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIRECT CLUTCH
AX–59
. . . . . . . . . . . . . . . . . . . . . . . .
FORWARD CLUTCH
AX–65
. . . . . . . . . . . . . . . . . . . . .
SECOND BRAKE
AX–72
. . . . . . . . . . . . . . . . . . . . . . . .
UNDERDRIVE PLANETARY GEAR
AX–76
. . . . . . . .
UNDERDRIVE CLUTCH
AX–81
. . . . . . . . . . . . . . . . . .
VALVE BODY
AX–87
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
UPPER VALVE BODY
AX–94
. . . . . . . . . . . . . . . . . . . .
LOWER VALVE BODY
AX–98
. . . . . . . . . . . . . . . . . . . .
DIFFERENTIAL CASE
AX–102
. . . . . . . . . . . . . . . . . . . .
TRANSFER
AX–118
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AX0AG–08
D03851
Direct Clutch (C
2
)
No.1 One–way Clutch
(F
1
)
U/D Brake (B
3
)
No.2 One–way
Clutch (F
2
)
U/D Clutch
(C
3
)
2nd Brake (B
1
)
1st & Reverse Brake
(B
2
)
Forward Clutch (C
1
)
Shift lever range
P
N
R
D
L
2
C
3
Gear position
C
1
C
2
F
2
B
1
B
2
B
3
Reverse
Parking
Neutral
1st
2nd
3rd
O/D
1st
2nd
f
1st
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f ... Operating
F
1
f
f
f
f
f
f
–
AUTOMATIC TRANSAXLE
AUTOMATIC TRANSAXLE SYSTEM
AX–1
U140F AX (RM848E)
AUTOMATIC TRANSAXLE SYSTEM
OPERATION
D04090
C
1
B
2
F
1
B
1
C
2
C
3
B
3
F
2
IN
OUT
AX–2
–
AUTOMATIC TRANSAXLE
AUTOMATIC TRANSAXLE SYSTEM
U140F AX (RM848E)
FUNCTION OF COMPONENTS
Component
Function
C
1
Forward Clutch
Connects input shaft and front planetary sun gear.
C
2
Direct Clutch
Connects input shaft and rear planetary sun gear.
C
3
U/D Clutch
Connects U/D sun gear and U/D planetary carrier.
B
1
2nd Brake
Prevents rear planetary sun gear from turning either clockwise
or counterclockwise.
B
2
1st & Reverse Brake
Prevents rear planetary carrier and front planetary ring gear
from turning either clockwise or counterclockwise.
B
3
U/D Brake
Prevents U/D sun gear from turning either clockwise or coun-
terclockwise.
F
1
No.1 One–way Clutch
Prevents rear planetary carrier from turning counterclockwise.
F
2
No.2 One–way Clutch
Prevents U/D planetary sun gear from turning clockwise.
Planetary Gears
These gears change the route through which driving force is
transmitted, in accordance with the operation of each clutch
and brake, in order to increase or reduce the input and output
speed.
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