Lexus ES300 (2002 year). Manual - part 126

CHASSIS – U150E AUTOMATIC TRANSAXLE

CH-3

211CH02

Front Planetary Gear

Counter Drive Gear

Input Shaft

Differential Drive
Pinion

Counter Driven Gear

Under Drive (U / D)
Planetary Gear

Rear Planetary
Gear

F

1

C

0

C

2

B

1

B

2

C

1

C

3

F

2

B

3

 Specification 



Transaxle Type

U150E

U140E

C

1

Forward Clutch

5

6

C

Direct Clutch

—

4

C

2

Reverse Clutch

3

—

C

3

U / D Direct Clutch

4

C

0

Direct & O / D Clutch

The No. of Discs

4

—

B

2nd & O / D Brake

4

—

B

1

2nd Brake

—

4

B

2

1st & Reverse Brake

6

7

B

3

U / D Brake

4

F

1

No.1 One-Way Clutch

The No of Sprags

28

F

2

U / D One-Way Clutch

The No. of Sprags

24

The No. of Sun Gear Teeth

43

Front Planetary Gear

The No. of Pinion Gear Teeth

17

y

The No. of Ring Gear Teeth

77

The No. of Sun Gear Teeth

31

Rear Planetary Gear

The No. of Pinion Gear Teeth

19

y

The No. of Ring Gear Teeth

69

The No. of Sun Gear Teeth

35

U / D Planetary Gear

The No. of Pinion Gear Teeth

28

y

The No. of Ring Gear Teeth

91

Counter Gear

The No. of Drive Gear Teeth

52

Counter Gear

The No. of Driven Gear Teeth

53

CHASSIS – U150E AUTOMATIC TRANSAXLE

CH-4

208CH02

Pump Impeller

Turbine Runner

Lock-up
Clutch

Stator

OD Input Shaft

One-way Clutch

208CH03

Pump Body

Drive Gear

Stator Shaft

Driven Gear

TORQUE CONVERTER

 This torque converter has optimally designed fluid passages and impeller configuration resulting in

substantially enhanced transmission efficiency to ensure better starting, acceleration and fuel economy.

 Furthermore, a hydraulically operated lock-up mechanism which cuts power transmission losses due to

slippage at medium and high speeds is used.

 The basic construction and operation are the same as for the U140E for the ’01 ES300 models.

However, the stall torque ratio has been changed.

 Specification 



Model

’02 ES300

’01 ES300

Transaxle Type

U150E

U140E

Type

3-Element, 1-Step, 2-Phase

Type

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

Stall Torque Ratio

1.75

1.8

OIL PUMP

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

 Specification 



Gear

Gear Teeth

Drive Gear

9

Driven Gear

10

ENGINE – 1MZ-FE ENGINE

EG-5

209EG101

Engine
Front

For Right Bank

For Left Bank

Rubber

Cylinder
Head Cover

Aluminum

Cylinder Head

A – A Cross Section

A

A

Gasket

208EG104

for Right Bank

for Left Bank

Engine Front

ENGINE PROPER

1. Cylinder Head Cover

 Lightweight yet high-strength aluminum diecast cylinder head covers are used.

 An aluminum washer made of vibration-damping laminated aluminum sheet is used on the evenly spaced

shoulder bolts which fasten the cylinder head covers.

2. Cylinder Head Gasket

 A metal type cylinder head gasket which offers superior pressure resistance and sealing performance has

been adopted.

ENGINE – 1MZ-FE ENGINE

EG-6

187EG07

Exhaust Valve

Intake Valve

Spark Plug Hole

View of Back Side

3. Cylinder Head

 The cylinder head, which is made of aluminum, has adopted a pentroof-type combustion chamber. The

spark plug has been located in the center of the combustion chamber.

 Upright, small-diameter intake ports are adopted.

 The cross section of the protrusion of the valve guide into the intake port has been reduced by decreasing

the valve stem diameter and the valve guide outer diameter.

 Plastic region tightening bolt is used for the cylinder head bolts for good axial tension.