Mazda CX-7 2006 User Manual
Automatic
CONTENTS
Transaxle and
Transfer
Workshop
Manual
AW6A–EL
AW6AX–EL
FOREWORD
This manual explains the service points for
the above-indicated automotive system.
This manual covers all models with the
above-indicated automotive system, not any
one specific model.
In order to do these procedures safely,
quickly, and correctly, you must first read
this manual and any other relevant service
materials carefully.
All the contents of this manual, including
drawings and specifications, are the latest
available at the time of printing.
As modifications affecting repair or
maintenance occur, relevant information
supplementary to this volume will be made
available at Mazda dealers.
This manual should be kept up-to-date.
Mazda Motor Corporation reserves the right
to alter the specifications and contents of
this manual without obligation or
advance notice.
All rights reserved.
No part of this book may be reproduced or
used in any form or by any means, electronic
or mechanical-including
photocopying and recording and the use of
any kind of information storage and retrieval
system-without permission in writing.
Title
GENERAL INFORMATION
DRIVELINE/AXLE
TRANSMISSION/TRANSAXLE
© 2006 Mazda Motor Corporation
PRINTED IN U.S.A., FEBRUARY 2006
Form No. 1874–1U–06B
Part No. 9999–95–0AW6–07
Section
FEATURES SERVICE
00 00
03 03
05 05
Mazda Motor Corporation
HIROSHIMA, JAPAN
FEATURES
DRIVELINE/AXLE
To c o f S C T
OUTLINE . . . . . . . . . . . . . . . . . . 03-00 TRANSFER . . . . . . . . . . . . . . . 03-16
To c o f S C T
03
SECTION
03-00 OUTLINE
DRIVELINE/AXLE FEATURES . . . . . . . . 03-00–1 DRIVELINE/AXLE SPECIFICATIONS. . . 03-00–1
End of Toc
NG: DRIVELINE/AXLE
DRIVELINE/AXLE FEATURES
Improved reliability • Separate oil pump and oil cooler have been adopted to the transfer
End Of Sie
DRIVELINE/AXLE SPECIFICATIONS
Item Specification
Grade API service GL-5
Viscosity SAE 80W-90
(L {US qt, Imp qt}) 1.2 {1.3,1.1}
Transfer oil
Ty p e
Oil capacity
(approx. quantity)
id030000100100
id030000100200
03-00
End Of Sie
03-00–1
03-16 TRANSFER
TRANSFER
TRANSFER STRUCTURAL VIEW . . . . . 03-16–1
TRANSFER CROSS-SECTIONAL
VIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . 03-16–1
End of Toc
NG: TRANSFER
TRANSFER STRUCTURAL VIEW
OIL COOLER
OIL PUMP
TRANSFER POWER FLOW. . . . . . . . . . . 03-16–2
TRANSFER OIL COOLER
CONSTRUCTION . . . . . . . . . . . . . . . . . 03-16–2
03-16
id031600100100
DRIVE PINION GEAR
RING GEAR
DRIVE GEAR SHAFT
End Of Sie
TRANSFER CROSS-SECTIONAL VIEW
DRIVE GEAR
RING GEAR
DRIVE GEAR
acxuun00000598
id031600100200
DRIVE GEAR CASE
DRIVE GEAR SHAFT
OIL PUMP
OIL LEVEL PLUG
End Of Sie
FRONT CARRIER
DRIVE PINION GEAR
acxuun00000599
03-16–1
TRANSFER
TRANSFER POWER FLOW
End Of Sie
TRANSFER OIL COOLER CONSTRUCTION
id031600100300
acxuun00000600
id031600100400
End Of Sie
WATER IN
VIEW A
WATER OUT
VIEW FROM A
acxuun00000601
03-16–2
TRANSMISSION/TRANSAXLE
To c o f S C T
OUTLINE . . . . . . . . . . . . . . . . . . 05-00 AUTOMATIC TRANSAXLE . . . 05-17
05
SECTION
To c o f S C T
05-00 OUTLINE
05-00
TRANSMISSION/TRANSAXLE
FEATURES . . . . . . . . . . . . . . . . . . . . . . 05-00–1
End of Toc
NG: TRANSMISSION/TRANSAXLE
TRANSMISSION/TRANSAXLE FEATURES
ATX [AW6A-EL, AW6AX-EL]
Superior shift quality • Centrifugal hydraulic pressure cancel clutch has been adopted.
End Of Sie
AUTOMATIC TRANSAXLE SPECIFICATIONS
Item Specifications
Transaxle type AW6A-EL, AW6AX-EL
1GR 4.148
2GR 2.370
3GR 1.555
Gear ratio
Final gear ratio 3.749
AT F
Torque converter stall torque ratio 2.15
Hydraulic system
(Number of drive/driven plates)
Band servo
(mm {in})
Front planetary gear
(Number of teeth)
Rear planetary gear
(Number of teeth)
Counter drive gear (Number of teeth) 52
Counter gear (Number of teeth)
Ring gear (Number of teeth) 53
• The example of automatic transaxle specifications. (specifications of the CX-7)
End Of Sie
4GR 1.154
5GR 0.859
6GR 0.685
Reverse 3.393
Type JWS3309
Capacity (approx. quantity)
C1 clutch 7/7
C2 clutch 4/4
C3 clutch 4/4
B2 brake 7/6
Servo diameter (piston outer dia./retainer
outer dia.)
Ring gear 81
Sun gear 45
Pinion gear 17
Ring gear 72
Middle sun gear 33
Rear sun gear 27
Long pinion gear 18
Short pinion gear 17
Driven gear 49
Drive gear 15
AUTOMATIC TRANSAXLE
SPECIFICATIONS . . . . . . . . . . . . . . . . 05-00–1
(L {US qt, Imp qt})
7.0 {7.4, 6.2}
61.3/66.0
{2.41/2.60}
id050000100200
id050000100300
05-00–1
AUTOMATIC TRANSAXLE
05-17 AUTOMATIC TRANSAXLE
AUTOMATIC TRANSAXLE OUTLINE . . 05-17–1
AUTOMATIC TRANSAXLE
CROSS-SECTIONAL VIEW . . . . . . . . . 05-17–2
POWERFLOW STRUCTURE . . . . . . . . . 05-17–4
Description of Components . . . . . . . . . 05-17–4
POWERFLOW OPERATION . . . . . . . . . . 05-17–5
1GR (D range) . . . . . . . . . . . . . . . . . . . 05-17–6
1GR (M range) . . . . . . . . . . . . . . . . . . . 05-17–7
2GR . . . . . . . . . . . . . . . . . . . . . . . . . . . 05-17–8
3GR. . . . . . . . . . . . . . . . . . . . . . . . . . . . 05-17–9
4GR. . . . . . . . . . . . . . . . . . . . . . . . . . . . 05-17–10
5GR. . . . . . . . . . . . . . . . . . . . . . . . . . . . 05-17–11
6GR. . . . . . . . . . . . . . . . . . . . . . . . . . . . 05-17–12
R position . . . . . . . . . . . . . . . . . . . . . . . 05-17–13
CENTRIFUGAL HYDRAULIC PRESSURE
CANCEL CLUTCH OUTLINE . . . . . . . . 05-17–15
TORQUE CONVERTER OUTLINE. . . . . . 05-17–17
End of Toc
NG: AUTOMATIC TRANSAXLE
AUTOMATIC TRANSAXLE OUTLINE
• The AW6A (X) -EL automatic transaxle is a compact, lightweight, next-generation electronically controlled FF 6speed automatic transaxle that employs a Ravigneaux-type planetary gear. It employs a high-precision clutch
hydraulic control system for smooth, highly responsive gear shift feel.
id051700101700
End Of Sie
05-17
05-17–1
AUTOMATIC TRANSAXLE
AUTOMATIC TRANSAXLE CROSS-SECTIONAL VIEW
AW6A-EL
C2 CLUTCH C1 CLUTCH C3 CLUTCHB2 BRAKE B1 BRAKE
ONE-WAY
CLUTCH
id051700101900
TORQUE
CONVERTER
COUNTER
DRIVE GEAR
COUNTER GEAR
(DRIVEN)
COUNTER GEAR
(DRIVE)
DIFFERENTIAL
acxuun00000612
05-17–2
AW6AX-EL
AUTOMATIC TRANSAXLE
C2 CLUTCH C1 CLUTCH C3 CLUTCHB2 BRAKE B1 BRAKE
ONE-WAY
CLUTCH
TORQUE
CONVERTER
05-17
COUNTER
DRIVE GEAR
COUNTER GEAR
(DRIVEN)
COUNTER GEAR
(DRIVE)
DIFFERENTIAL
End Of Sie
acxuun00000613
05-17–3
AUTOMATIC TRANSAXLE
POWERFLOW STRUCTURE
Description of Components
C2 CLUTCH B2 BRAKE
ONE-WAY
CLUTCH
COUNTER GEAR
COUNTER DRIVE GEAR
B1 BRAKE
C1 CLUTCH
id051700102200
C3 CLUTCH
OIL PUMP
INPUT
SHAFT
DIFFERENTIAL
REAR PLANETARY GEAR
SUN GEAR
PINION GEAR
RING GEAR
FRONT PLANETARY GEAR
PINION GEAR
INPUT
SHAFT
: LOCK
• The number of pinion gears differs depending on the engine displacement and vehicle.
— Mazda6
• Front: 3 pinions
• Rear: 3 pinions
— CX-7
• Front: 5 pinions
• Rear: 3 pinions
SUN GEAR
RING GEAR
acxuun00000680
05-17–4
AUTOMATIC TRANSAXLE
ONE-WAY CLUTCH
B2 BRAKE
C2 CLUTCH
REAR PLANETARY
LONG PINION
GEAR
REAR
PLANETARY
CARRIER
REAR PLANETARY
RING GEAR
REAR PLANETARY SHORT
PINION GEAR
REAR PLANETARY REAR SUN GEAR
End Of Sie
POWERFLOW OPERATION
List of operating components
Clutch / Brake Operation
C1 clutch • Connects front planetary carrier to rear planetary rear sun gear
C2 clutch • Connects intermediate shaft to rear planetary carrier
C3 clutch • Connects front planetary carrier to rear planetary middle sun gear
B1 brake • Locks rear planetary middle sun gear
B2 brake • Locks rear planetary carrier
One-way clutch • Locks counterclockwise rotation of rear planetary carrier
COUNTER
DRIVE GEAR
REAR PLANETARY
MIDDLE SUN GEAR
C1 CLUTCH
FRONT
PLANETARY
RING GEAR
B1 BRAKE
FRONT
PLANETARY
CARRIER
FRONT PLANETARY SUN GEAR
C3 CLUTCH
FRONT
PLANETARY
PINION GEAR
05-17
acxuun00000681
id051700102300
05-17–5
1GR (D range)
AUTOMATIC TRANSAXLE
C2 CLUTCH B2 BRAKE
ONE-WAY
CLUTCH
COUNTER DRIVE GEAR
B1 BRAKE
C1 CLUTCH
C3 CLUTCH
RING GEAR
(DIFFERENTIAL)
COUNTER GEAR
acxuun00000620
Power transmission pathway
[Operating components: C1 clutch, One-way clutch]
• Operating components:
C1 clutch, One-way clutch (counterclockwise rotation is locked), B2 brake (ON when engine brake is operating)
Planetary gear unit Input, Locked, Output
Front
Rear
Input: Ring gear
Locked: Sun gear
Output: Carrier
Input: Rear sun gear
Locked: Carrier
Output: Ring gear
1. Input shaft (rotates clockwise) [same revolutions as the torque converter’s turbine runner]
2. Front planetary ring gear (rotates clockwise) [same revolutions as the input shaft]
3. Front planetary pinion gear (rotates clockwise on its axis, orbits clockwise)
[because the front planetary sun gear is locked by the oil pump, it is pressed against the front planetary ring
gear and orbits the sun gear while rotating on its axis (because the front planetary ring gear has internal gears,
the rotational direction does not change)]
4. Front planetary carrier (rotates clockwise)
[reduction: same revolution as the front planetary pinion gear orbit revolution]
5. C1 clutch (rotates clockwise) [connects the front planetary carrier and the rear planetary rear sun gear]
6. Rear planetary rear sun gear (rotates clockwise) [same revolution as the front planetary carrier]
7. Rear planetary short pinion gear (rotates counterclockwise on its axis)
[the rear planetary carrier tries to rotate counterclockwise, but the counterclockwise rotation is locked by oneway clutch.]
8. Rear planetary long pinion gear (rotates clockwise on its axis)
[the rear planetary middle sun gear rotates counterclockwise (idling)]
05-17–6
AUTOMATIC TRANSAXLE
9. Rear planetary ring gear (rotates clockwise)
[the rear planetary ring gear is rotated by the rear planetary long pinion gear (because the rear planetary ring
gear has internal gears, the rotational direction does not change)]
10. Counter drive gear (rotates clockwise)
[because the rear planetary ring gear is installed on the counter drive gear, the rotational direction and the
revolution are the same as the rear planetary ring gear]
11. Counter gear (rotates counterclockwise)
12. Differential ring gear (rotates clockwise)
1GR (M range)
C2 CLUTCH B2 BRAKE
ONE-WAY
CLUTCH
COUNTER DRIVE GEAR
B1 BRAKE
05-17
C1 CLUTCH
C3 CLUTCH
RING GEAR
(DIFFERENTIAL)
COUNTER GEAR
acxuun00000621
[Operating components: C1 clutch, B2 brake]
• When the engine brake is operating, driving force is transmitted from the tires. Because the rear planetary
carrier, which is locked in its counterclockwise rotation by the one-way clutch, tries to rotate clockwise, B2 brake
is turned ON and the rear planetary carrier is locked, and kinematic energy is transmitted from the tires to the
engine.
05-17–7
2GR
AUTOMATIC TRANSAXLE
C2 CLUTCH B2 BRAKE
ONE-WAY
CLUTCH
COUNTER DRIVE GEAR
B1 BRAKE
C1 CLUTCH
C3 CLUTCH
RING GEAR
(DIFFERENTIAL)
COUNTER GEAR
acxuun00000622
Power transmission pathway
[Operating components: C1 clutch, B1 brake]
Planetary gear unit Input, Locked, Output
Front
Rear
Input: Ring gear
Locked: Sun gear
Output: Carrier
Input: Rear Sun gear
Locked: Middle Sun gear
Output: Ring gear
1. Input shaft (rotates clockwise) [same revolutions as the torque converter’s turbine runner]
2. Front planetary ring gear (rotates clockwise) [same revolution as the input shaft]
3. Front planetary pinion gear (rotates clockwise on its axis, orbits clockwise)
[because the front planetary sun gear is locked by the oil pump, it is pressed against the front planetary ring
gear and orbits the sun gear while rotating on its axis (because the front planetary ring gear has internal gears,
the rotational direction does not change)]
4. Front planetary carrier (rotates clockwise)
[reduction: same revolution as the front planetary pinion gear orbit revolution]
5. C1 clutch (rotates clockwise) [connects the front planetary carrier and the rear planetary rear sun gear]
6. Rear planetary rear sun gear (rotates clockwise) [same revolution as the front planetary carrier]
7. Rear planetary middle sun gear is locked by B1 brake
8. Rear planetary short pinion gear (rotates counterclockwise on its axis, orbits clockwise)
9. Rear planetary long pinion gear (rotates clockwise on its axis, orbits clockwise)
10. Rear planetary ring gear (rotates clockwise)
[the rear planetary ring gear is rotated by the rear planetary long pinion gear (because the rear planetary ring
gear has internal gears, the rotational direction does not change)]
11. Counter drive gear (rotates clockwise)
[because the rear planetary ring gear is installed on the counter drive gear, the rotational direction and the
revolution are the same as the rear planetary ring gear]
12. Counter gear (rotates counterclockwise)
13. Differential ring gear (rotates clockwise)
05-17–8
AUTOMATIC TRANSAXLE
Engine brake
• When the engine brake is operating, driving force is transmitted from the tires.
3GR
C2 CLUTCH B2 BRAKE
ONE-WAY
CLUTCH
COUNTER DRIVE GEAR
B1 BRAKE
C1 CLUTCH
C3 CLUTCH
05-17
RING GEAR
(DIFFERENTIAL)
COUNTER GEAR
acxuun00000623
Power transmission pathway
[Operating components: C1 clutch, C3 clutch]
Planetary gear unit Input, Locked, Output
Input: Ring gear
Front
Input: Rear Sun gear, Middle Sun gear
Rear
Locked: Sun gear
Output: Carrier
Locked: -
Output: Ring gear
1. Input shaft (rotates clockwise) [same revolution as the torque converter’s turbine runner]
2. Front planetary ring gear (rotates clockwise) [same revolution as the input shaft]
3. Front planetary pinion gear (rotates clockwise on its axis, orbits clockwise)
[because the front planetary sun gear is locked by the oil pump, it is pressed against the front planetary ring
gear and orbits the sun gear while rotating on its axis (because the front planetary ring gear has internal gears,
the rotational direction does not change)]
4. Front planetary carrier (rotates clockwise)
[reduction: same revolution as the front planetary pinion gear orbit revolution]
5. C1 clutch (rotates clockwise) [connects the front planetary carrier and the rear planetary rear sun gear]
6. C3 clutch (rotates clockwise) [connects the front planetary carrier and the rear planetary middle sun gear]
7. Rear planetary gear component (rotates clockwise)
[because the rear planetary short pinion gear and the rear planetary long pinion gear are engaged, both the
pinion gears are locked due to the difference in the rotational directions, and kinematic energy of the rear
planetary sun gear and rear planetary middle sun gear is transmitted to the rear planetary ring gear]
8. Rear planetary ring gear (rotates clockwise) [same revolution as the rear planetary carrier]
9. Counter drive gear (rotates clockwise)
[because the rear planetary ring gear is installed on the counter drive gear, the rotational direction and the
revolution are same as the rear planetary ring gear]
05-17–9
AUTOMATIC TRANSAXLE
10. Counter gear (rotates counterclockwise)
11. Differential ring gear (rotates clockwise)
Engine brake
• When the engine brake is operating, driving force is transmitted from the tires.
4GR
C2 CLUTCH B2 BRAKE
ONE-WAY
CLUTCH
COUNTER DRIVE GEAR
B1 BRAKE
C1 CLUTCH
C3 CLUTCH
RING GEAR
(DIFFERENTIAL)
COUNTER GEAR
acxuun00000624
Power transmission pathway
[Operating components: C1 clutch, C2 clutch]
Planetary gear unit Input, Locked, Output
Front
Rear
Input: Ring gear
Locked: Sun gear
Output: Carrier
Input: Rear Sun gear, Carrier
Locked: -
Output: Ring gear
1. Input shaft (rotates clockwise) [same revolution as the torque converter’s turbine runner]
2. Front planetary ring gear (rotates clockwise) [same revolution as the input shaft]
3. Front planetary pinion gear (rotates clockwise on its axis, orbits clockwise)
[because the front planetary sun gear is locked by the oil pump, it is pressed against the front planetary ring
gear and orbits the sun gear while rotating on its axis (because the front planetary ring gear has internal gears,
the rotational direction does not change)]
4. Front planetary carrier (rotates clockwise)
[reduction: same revolution as the front planetary pinion gear orbit revolution]
5. C1 clutch (rotates clockwise) [connects the front planetary carrier and the rear planetary rear sun gear]
6. Intermediate shaft (rotates clockwise) [same revolution as the input shaft]
7. C2 clutch (rotates clockwise) [same revolution as the intermediate shaft]
8. Rear planetary carrier (rotates clockwise) [same revolution as the intermediate shaft]
9. Rear planetary short pinion gear (rotates clockwise on its axis, orbits clockwise)
[because the rear planetary carrier rotates faster than the rear planetary sun gear]
05-17–10
AUTOMATIC TRANSAXLE
10. Rear planetary long pinion gear (rotates counterclockwise on its axis, orbits clockwise)
11. Rear planetary ring gear (rotates clockwise)
[because the rear planetary long pinion gear’s rotation is subtracted from the rear planetary carrier revolution,
the rear planetary ring gear revolution is slower than those of the rear planetary carrier]
12. Counter drive gear (rotates clockwise)
[because the rear planetary ring gear is installed on the counter drive gear, the rotational direction and the
revolution is the same as the rear planetary ring gear]
13. Counter gear (rotates counterclockwise)
14. Differential ring gear (rotates clockwise)
Engine brake
• When the engine brake is operating, driving force is transmitted from the tires.
5GR
C2 CLUTCH B2 BRAKE
ONE-WAY
CLUTCH
COUNTER DRIVE GEAR
B1 BRAKE
C1 CLUTCH
RING GEAR
(DIFFERENTIAL)
05-17
C3 CLUTCH
COUNTER GEAR
acxuun00000625
Power transmission pathway
[Operating components: C2 clutch, C3 clutch]
Planetary gear unit Input, Locked, Output
Input: Ring gear
Front
Rear
Locked: Sun gear
Output: Carrier
Input: Carrier, Middle Sun gear
Locked: -
Output: Ring gear
1. Input shaft (rotates clockwise) [same revolutions as torque converter’s turbine runner]
2. Front planetary ring gear (rotates clockwise) [same revolution as the input shaft]
3. Front planetary pinion gear (rotates clockwise on its axis, orbits clockwise)
[because the front planetary sun gear is locked by the oil pump, it is pressed against the front planetary ring
gear and orbits the sun gear while rotating on its axis (because the front planetary ring gear has internal gears,
the rotational direction does not change)]
05-17–11
AUTOMATIC TRANSAXLE
4. Front planetary carrier (rotates clockwise)
[reduction: same revolution as the front planetary pinion gear orbit revolution]
5. C3 clutch (rotates clockwise) [connects the front planetary carrier and the rear planetary middle sun gear]
6. Rear planetary middle sun gear (rotates clockwise)
[same revolution as C3 clutch (decelerates by the front planetary gear, so the revolutions are slower than the
input shaft)]
7. Intermediate shaft (rotates clockwise) [same revolution as the input shaft]
8. C2 clutch (rotates clockwise) [same revolution as the intermediate shaft]
9. Rear planetary carrier (rotates clockwise) [same revolutions as intermediate shaft]
10. Rear planetary long pinion gear (rotates clockwise on its axis, orbits clockwise)
[because the rear planetary carrier rotates faster than the rear planetary middle sun gear, the rear planetary
middle pinion gear is pushed out by the speed difference, and orbits clockwise while rotating clockwise on its
axis.]
11. Rear planetary ring gear (rotates clockwise)
[because the rear planetary long pinion gear’s rotation is added to the rear planetary carrier revolutions, rear
planetary ring gear revolution is faster than those of the rear planetary carrier]
12. Counter drive gear (rotates clockwise)
[because the rear planetary ring gear is installed on the counter drive gear, the rotational direction and
revolution is the same as the rear planetary ring gear]
13. Counter gear (rotates counterclockwise)
14. Differential ring gear (rotates clockwise)
Engine brake
• When the engine brake is operating, driving force is transmitted from the tires.
6GR
C2 CLUTCH B2 BRAKE
ONE-WAY
CLUTCH
COUNTER DRIVE GEAR
B1 BRAKE
C1 CLUTCH
C3 CLUTCH
RING GEAR
(DIFFERENTIAL)
05-17–12
COUNTER GEAR
acxuun00000626
AUTOMATIC TRANSAXLE
Power transmission pathway
[Operating components: B1 brake, C2 clutch]
Planetary gear unit Input, Locked, Output
Front -
Input: Carrier
Rear
1. Input shaft (rotates clockwise) [same revolution as the torque converter’s turbine runner]
2. Intermediate shaft (rotates clockwise) [same revolution as the torque converter’s turbine runner]
3. B1 brake [locks the rear planetary middle sun gear]
4. C2 clutch [connects the intermediate shaft and the rear planetary carrier]
5. Rear planetary carrier (rotates clockwise) [same revolution as the intermediate shaft]
6. Rear planetary long pinion gear (rotates clockwise on its axis, orbits clockwise)
[because the rear planetary middle sun gear is locked, it is always in a speed increasing condition]
7. Rear planetary ring gear (rotates clockwise)
[because the rear planetary long pinion gear’s rotation is added to the rear planetary carrier revolution, the rear
planetary ring gear revolution is faster than those of the rear planetary carrier]
8. Counter drive gear (rotates clockwise)
[because the rear planetary ring gear is installed on the counter drive gear, the rotational direction and
revolution are the same as the rear planetary ring gear]
9. Counter gear (rotates counterclockwise)
10. Differential ring gear (rotates clockwise)
Engine brake
• When the engine brake is operating, driving force is transmitted from the tires.
Locked: Middle Sun gear
Output: Ring gear
05-17
R position
C2 CLUTCH B2 BRAKE
ONE-WAY
CLUTCH
COUNTER DRIVE GEAR
B1 BRAKE
C1 CLUTCH
C3 CLUTCH
RING GEAR
(DIFFERENTIAL)
COUNTER GEAR
acxuun00000627
05-17–13
AUTOMATIC TRANSAXLE
Power transmission pathway
[Operating components: C3 clutch, B2 brake]
Planetary gear unit Input, Locked, Output
Front
Rear
1. Input shaft (rotates clockwise) [same revolution as the torque converter’s turbine runner]
2. Front planetary ring gear (rotates clockwise) [same revolution as the input shaft]
3. Front planetary pinion gear (rotates clockwise on its axis, orbits clockwise)
[because the front planetary sun gear is locked by the oil pump, it is pressed against the front planetary ring
gear and orbits the sun gear while rotating on its axis (because the front planetary ring gear has internal gears,
the rotational direction does not change)]
4. Front planetary carrier (rotates clockwise)
[reduction: same revolution as the front planetary pinion gear orbit revolution]
5. C3 clutch (rotates clockwise) [connects the front planetary carrier and the rear planetary middle sun gear]
6. Rear planetary middle sun gear (rotates clockwise)
[same revolutions as the C3 clutch (rotates slower than the input shaft)]
7. B2 brake [locks the rear planetary carrier]
8. Rear planetary long pinion gear (rotates counterclockwise)
9. Rear planetary ring gear (rotates counterclockwise)
[the rear planetary ring gear is rotated by the rear planetary long pinion gear (because the rear planetary ring
gear has internal gears, the rotational direction does not change)]
10. Counter drive gear (rotates counterclockwise)
[because the rear planetary ring gear is installed on the counter drive gear, the rotational direction and
revolution are the same as the rear planetary ring gear]
11. Counter gear (rotates clockwise)
12. Differential ring gear (rotates counterclockwise)
Input: Ring gear
Locked: Sun gear
Output: Carrier
Input: Middle Sun gear
Locked: Carrier
Output: Ring gear
Engine brake
• When the engine brake is operating, driving force is transmitted from the tires.
End Of Sie
05-17–14
AUTOMATIC TRANSAXLE
CENTRIFUGAL HYDRAULIC PRESSURE CANCEL CLUTCH OUTLINE
id051700102400
• When the rotation of the clutch rises, centrifugal force operates on the oil inside the clutch, hydraulic pressure
rises, and the clutch is engaged at an earlier timing. Because of this, a difference arises in rotation between the
input shaft and the output shaft, and shift shock may occur. To solve this, an additional chamber has been
provided opposite the piston hydraulic pressure chamber. This causes centrifugal hydraulic pressure to operate
in the opposite direction with the same force as the piston, counteracting that pressure.
C2 CLUTCH
C1 CLUTCH
C3 CLUTCH
05-17
A
B
A : PISTON HYDRAULIC PRESSURE CHAMBER
B : CENTRIFUGAL HYDRAULIC PRESSURE CANCEL CHAMBER
A
B
B
acxuun00000628
05-17–15
AUTOMATIC TRANSAXLE
WITH CENTRIFUGAL HYDRAULIC
PRESSURE CANCEL CLUTCH
PISTON HYDRAULIC
PRESSURE CHAMBER
CENTRIFUGAL HYDRAULIC
PRESSURE CANCEL CHAMBER
WITHOUT CENTRIFUGAL HYDRAULIC
PRESSURE CANCEL CLUTCH
PISTON HYDRAULIC
PRESSURE CHAMBER
End Of Sie
NG: TORQUE CONVERTER
PISTON HYDRAULIC
PRESSURE
CENTRIFUGAL HYDRAULIC
PRESSURE
CENTRIFUGAL HYDRAULIC
PRESSURE CANCEL
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AUTOMATIC TRANSAXLE
TORQUE CONVERTER OUTLINE
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• The torque converter is composed of the converter cover, pump impeller, turbine runner, stator, one-way clutch,
and TCC. The torque converter transmits and amplifies torque by means of the ATF inside it. In addition, the
use of the TCC is intended to improve fuel economy as a direct coupling between the engine and automatic
transaxle.
CONVERTER
TCC PISTON
COVER
TURBINE
RUNNER
PUMP
IMPELLER
STATER
OIL PUMP
INPUT SHAFT
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SERVICE
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