U140E AND U241E AUTOMATIC TRANSAXLE

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CHASSIS -- U140E AND U241E AUTOMATIC TRANSAXLE

CH-125

U140E AND U241E AUTOMATIC TRANSAXLE

J DESCRIPTION

D The '02 Camry line-up uses the following types of automatic transaxles: 2AZ-FE ? U241E 1MZ-FE ? U140E

D These automatic transaxles are compact and high-capacity 4-speed Super ECT (Electronically Controlled Transaxle).

D The basic construction and operation of these automatic transaxles are the same. However, the gear ratio, disc, and spring number have been changed to accommodate the characteristic of the engine.

U140E

161ES20

U241E

181CH09

" Specification A

Model

'02 Camry

'01 Camry

Transaxle Type

U140E

U241E

A140E

A541E

Engine Type

1MZ-FE

2AZ-FE

5S-FE

1MZ-FE

1st

3.938*1

3.943*1

2.810

z

Gear Ratio

2nd 3rd 4th Reverse

2.194*1 1.411*1 1.019*1 3.141*1

2.197*1 1.413*1 1.020*1 3.145*1

1.549 1.000 0.706 2.296

z z 0.735 z

Counter Gear Ratio

1.019

1.020

0.945

z

Differential Gear Ratio

Fluid Capacity Liters (US qts, Imp. qts)

2.814 8.6 (9.1, 7.7)*2

2.740 z

3.944

5.6 (5.9, 4.9)*3 1.6 (1.7, 1.4)*4

3.933

6.8 (7.2, 5.9)*3 0.9 (0.9, 0.8)*4

Fluid Type

ATF D-II or

ATF Type T-IV

z

DEXRON?III

z

(DEXRON?II)

Dry Weight

kg (lb) 91 (200.6)

82 (180.8)

73 (160.9)

83.3 (183.6)

*1: Counter Gear Ratio Included *2: Differential Included

*3: Only for Transmission *4: Only for Differential

CH-126

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CHASSIS -- U140E AND U241E AUTOMATIC TRANSAXLE

Front Planetary Gear Counter Drive Gear

C1

B1

B2

C2

F1

Rear Planetary Gear

Input Shaft

B3

Under Drive (U/D) Planetary Gear

Differential Drive Pinion

F2

C3

Counter Driven Gear

" Specification A

Transaxle Type

C1 Forward Clutch

C2 Direct Clutch

C3 U/D Direct Clutch B1 2nd Brake

The No. of Discs

B2 1st & Reverse Brake

B3 U/D Brake

F1 No. 1 One-Way Clutch F2 U/D One-Way Clutch

The No. of Sprags The No. of Sun Gear Teeth

Front Planetary Gear

The No. of Pinion Gear Teeth

The No. of Ring Gear Teeth

The No. of Sun Gear Teeth

Rear Planetary Gear

The No. of Pinion Gear Teeth

The No. of Ring Gear Teeth

The No. of Sun Gear Teeth

U/D Planetary Gear

The No. of Pinion Gear Teeth

The No. of Ring Gear Teeth

Counter Gear

The No. of Drive Gear Teeth The No. of Driven Gear Teeth

208CH01

U140E 6 4 4 4 7 4 28 24 43 17 77 31 19 69 35 28 91 52 53

U241E 5 3 3 3 5 3 z 15 z z z z z z 32 26 83 50 51

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CHASSIS -- U140E AND U241E AUTOMATIC TRANSAXLE

CH-127

JTORQUE CONVERTER

D These torque converters have optimally designed fluid passages and impeller configuration resulting in substantially enhanced transmission efficiency to ensure better starting, acceleration and fuel economy.

D Furthermore, a hydraulically operated lock-up mechanism which cuts power transmission losses due to slippage at medium and high speeds is used.

D The basic construction and operation are the same as for the A541E for the previous models.

" Specification A

Engine Type Transaxle Type

Torque Converter Type Stall Torque Ratio

1MZ-FE

2AZ-FE

U140E

U241E

3-Element, 1-Step, 2-Phase (with Lock-up Mechanism)

1.8

2.0

Pump Impeller

Stator OD Input Shaft

Turbine Runner Lock-up Clutch

One-way Clutch

208CH02

JOIL PUMP The oil pump is combined with torque converter, lubricates the planetary gear units and supplies operating pressure to the hydraulic control.

" Specification A

Gear Drive Gear Driven Gear

Gear Teeth 9 10

Pump Body

Drive Gear

Stator Shaft Driven Gear

208CH03

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CH-128

CHASSIS -- U140E AND U241E AUTOMATIC TRANSAXLE

JPLANETARY GEAR UNIT

1. Construction

D The counter drive and driven gears are placed in front of the front planetary gear and the under drive (U/D) planetary gear unit is placed above the counter shaft. Furthermore, the force transmission method has been changed by eliminating the brake and the one-way clutch. As a result, a torque capacity that accommodates the high output engine has been attained, while realizing a compact gear unit.

D A centrifugal fluid pressure canceling mechanism has been adopted in the C2 and C3 clutches that are applied when shifting from 2nd to 3rd and from 3rd to 4th.

B1 F1 C2

Counter Drive Gear

B2 Front Planetary Gear

C1

Input Shaft

Rear Planetary Gear C3

Sun Gear

Intermediate Shaft

Differential Drive Pinion

Sun Gear

F2 B3 (U/D) Planetary Gear Counter Driven Gear

Ring Gear

208CH04

2. Function of Component Component

C1 Forward Clutch C2 Direct Clutch C3 U/D Direct Brake B1 2nd Brake

B2 1st & Reverse Brake

B3 U/D Brake F1 No. 1 One-Way Clutch F2 U/D One-Way Clutch

Planetary Gears

Function

Connects input shaft and front planetary sun gear.

Connects input shaft and rear planetary sun gear.

Connects U/D sun gear and U/D planetary carrier.

Prevents rear planetary carrier from turning either clockwise or counterclockwise. Prevents rear planetary carrier and front planetary ring gear from turning either clockwise or counterclockwise.

Prevents U/D sun gear from turning either clockwise or counterclockwise. Prevents rear planetary carrier from turning counterclockwise.

Prevents U/D planetary sun gear from turning clockwise.

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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CHASSIS -- U140E AND U241E AUTOMATIC TRANSAXLE

CH-129

3. Motive Power Transaxle

Shift

Lever

Gear

Position

SL1

P

Park

ON

R Reverse ON

N Neutral ON

1st

ON

2nd

OFF

D

3rd

OFF

4th

OFF

1st

ON

2

2nd

OFF

L

1st

ON

*: Lock-up ON

Solenoid Valve

SL2

S4

ON

OFF

OFF

OFF

ON

OFF

ON

OFF

ON

OFF

OFF

OFF

OFF

ON

ON

OFF

ON

OFF

ON

OFF

DSL

C1 C2 C3 B1 B2 B3 F1 F2

OFF

f

OFF

f

ff

OFF

f

OFF f

fff

OFF f

f

f

f

OFF/ON* f f

f

f

OFF/ON* f f f

OFF f

fff

OFF f

f

f

f

ON f

ffff

1st Gear (D or 2 Position)

B1 F1 C2

Counter Drive Gear

B2 Front Planetary Gear

C1

Input Shaft

Rear Planetary Gear

Sun Gear

Intermediate Shaft

C3 Differential Drive Pinion

Sun Gear F2 B3 U/D Planetary Gear

Counter Driven Gear

Ring Gear

161ES09

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