Infiniti EX37. Transaxle and Transmission (2013 year). Manual - part 3

SHIFT MECHANISM

TM-33

< SYSTEM DESCRIPTION >

[7AT: RE7R01A]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

System Diagram

INFOID:0000000008285758

System Description

INFOID:0000000008285759

DESCRIPTION

JSDIA0877GB

2013 EX

TM-34

< SYSTEM DESCRIPTION >

[7AT: RE7R01A]

SHIFT MECHANISM

With the use of 4 sets of planetary gears, A/T enables 7-speed transmission for forward and 1-speed transmis-
sion for backward, depending on the combination of 3 sets of multiple-disc clutches, 4 sets of multiple-disc
brakes and 2 sets of one-way clutches.

CLUTCH AND BRAKE CHART

POWER TRANSMISSION

“N” Position

JSDIA1458GB

2013 EX

SHIFT MECHANISM

TM-35

< SYSTEM DESCRIPTION >

[7AT: RE7R01A]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

Since the low brake is released, torque from the input shaft drive is not transmitted to the output shaft.

“P” Position

JSDIA0880GB

2013 EX

TM-36

< SYSTEM DESCRIPTION >

[7AT: RE7R01A]

SHIFT MECHANISM

• The same as for the “N” position, since the low brake is released, so torque from the input shaft drive is not

transmitted to the output shaft.

• The parking pawl linked with the selector lever meshes with the parking gear and fastens the output shaft

mechanically.

“D

1

” and “DS

1

” Positions

JSDIA1277GB

2013 EX

SHIFT MECHANISM

TM-37

< SYSTEM DESCRIPTION >

[7AT: RE7R01A]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

• The 1st one-way clutch regulates counterclockwise rotation of the under drive carrier.
• The 2nd one-way clutch regulates counterclockwise rotation of the rear sun gear.
• The mid sun gear is fixed by the low brake.
• Each planetary gear enters the state described below.

JSDIA0866GB

2013 EX

TM-38

< SYSTEM DESCRIPTION >

[7AT: RE7R01A]

SHIFT MECHANISM

Front planetary gear

Under drive planetary gear

Rear planetary gear

Mid planetary gear

“M1” Position

Name

Front sun gear

Front carrier

Front internal gear

Condition

—

Output

Input

Direction of rotation

Counterclockwise revolution

Clockwise revolution

Clockwise revolution

Number of revolutions

Deceleration from front internal 

gear

Deceleration from front internal 

gear

Same number of revolution as the 

input shaft

Name

Under drive sun gear

Under drive carrier

Under drive internal gear

Condition

—

Fixed

Input/Output

Direction of rotation

Counterclockwise revolution

—

Clockwise revolution

Number of revolutions

Acceleration from under drive in-

ternal gear

—

Same number of revolution as the 

front carrier

Name

Rear sun gear

Rear carrier

Rear internal gear

Condition

Fixed

Output

Input

Direction of rotation

—

Clockwise revolution

Clockwise revolution

Number of revolutions

—

Deceleration from rear internal 

gear

Same number of revolution as the 

under drive internal gear

Name

Mid sun gear

Mid carrier

Mid internal gear

Condition

Fixed

Output

Input

Direction of rotation

—

Clockwise revolution

Clockwise revolution

Number of revolutions

—

Deceleration from mid internal 

gear

Same number of revolution as the 

rear carrier

2013 EX

SHIFT MECHANISM

TM-39

< SYSTEM DESCRIPTION >

[7AT: RE7R01A]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

• The 1st one-way clutch and the front brake regulate counterclockwise rotation of the under drive carrier.

NOTE:
The front brake operates only while coasting.

• The 2nd one-way clutch and the high and low reverse clutch regulate counterclockwise rotation of the rear

sun gear.
NOTE:
The high and low reverse clutch operates only while coasting.

• The mid sun gear is fixed by the low brake.

JSDIA0867GB

2013 EX

TM-40

< SYSTEM DESCRIPTION >

[7AT: RE7R01A]

SHIFT MECHANISM

• Each planetary gear enters the state described below.

Front planetary gear

Under drive planetary gear

Rear planetary gear

Mid planetary gear

“D

2

” and “DS

2

” Positions

Name

Front sun gear

Front carrier

Front internal gear

Condition

—

Output

Input

Direction of rotation

Counterclockwise revolution

Clockwise revolution

Clockwise revolution

Number of revolutions

Deceleration from front internal 

gear

Deceleration from front internal 

gear

Same number of revolution as the 

input shaft

Name

Under drive sun gear

Under drive carrier

Under drive internal gear

Condition

—

Fixed

Input/Output

Direction of rotation

Counterclockwise revolution

—

Clockwise revolution

Number of revolutions

Acceleration from under drive in-

ternal gear

—

Same number of revolution as the 

front carrier

Name

Rear sun gear

Rear carrier

Rear internal gear

Condition

Fixed

Output

Input

Direction of rotation

—

Clockwise revolution

Clockwise revolution

Number of revolutions

—

Deceleration from rear internal 

gear

Same number of revolution as the 

under drive internal gear

Name

Mid sun gear

Mid carrier

Mid internal gear

Condition

Fixed

Output

Input

Direction of rotation

—

Clockwise revolution

Clockwise revolution

Number of revolutions

—

Deceleration from mid internal 

gear

Same number of revolution as the 

rear carrier

2013 EX

SHIFT MECHANISM

TM-41

< SYSTEM DESCRIPTION >

[7AT: RE7R01A]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

• The front sun gear and the under drive sun gear are fixed by the 2346 brake.
• The 2nd one-way clutch regulates counterclockwise rotation of the rear sun gear.
• The mid sun gear is fixed by the low brake.
• Each planetary gear enters the state described below.

JSDIA0868GB

2013 EX

TM-42

< SYSTEM DESCRIPTION >

[7AT: RE7R01A]

SHIFT MECHANISM

Front planetary gear

Under drive planetary gear

Rear planetary gear

Mid planetary gear

“M2” Position

Name

Front sun gear

Front carrier

Front internal gear

Condition

Fixed

Output

Input

Direction of rotation

—

Clockwise revolution

Clockwise revolution

Number of revolutions

—

Deceleration from front internal 

gear

Same number of revolution as the 

input shaft

Name

Under drive sun gear

Under drive carrier

Under drive internal gear

Condition

Fixed

—

Input/Output

Direction of rotation

—

Clockwise revolution

Clockwise revolution

Number of revolutions

—

Deceleration from under drive in-

ternal gear

Same number of revolution as the 

front carrier

Name

Rear sun gear

Rear carrier

Rear internal gear

Condition

Fixed

Output

Input

Direction of rotation

—

Clockwise revolution

Clockwise revolution

Number of revolutions

—

Deceleration from rear internal 

gear

Same number of revolution as the 

under drive internal gear

Name

Mid sun gear

Mid carrier

Mid internal gear

Condition

Fixed

Output

Input

Direction of rotation

—

Clockwise revolution

Clockwise revolution

Number of revolutions

—

Deceleration from mid internal 

gear

Same number of revolution as the 

rear carrier

2013 EX

SHIFT MECHANISM

TM-43

< SYSTEM DESCRIPTION >

[7AT: RE7R01A]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

• The front sun gear and the under drive sun gear are fixed by the 2346 brake.
• The 2nd one-way clutch and the high and low reverse clutch regulate counterclockwise rotation of the rear

sun gear.
NOTE:
The high and low reverse clutch operates only while coasting.

• The mid sun gear is fixed by the low brake.
• Each planetary gear enters the state described below.

JSDIA0869GB

2013 EX

TM-44

< SYSTEM DESCRIPTION >

[7AT: RE7R01A]

SHIFT MECHANISM

Front planetary gear

Under drive planetary gear

Rear planetary gear

Mid planetary gear

“D

3

”, “DS

3

” and “M3” Positions

Name

Front sun gear

Front carrier

Front internal gear

Condition

Fixed

Output

Input

Direction of rotation

—

Clockwise revolution

Clockwise revolution

Number of revolutions

—

Deceleration from front internal 

gear

Same number of revolution as the 

input shaft

Name

Under drive sun gear

Under drive carrier

Under drive internal gear

Condition

Fixed

—

Input/Output

Direction of rotation

—

Clockwise revolution

Clockwise revolution

Number of revolutions

—

Deceleration from under drive in-

ternal gear

Same number of revolution as the 

front carrier

Name

Rear sun gear

Rear carrier

Rear internal gear

Condition

Fixed

Output

Input

Direction of rotation

—

Clockwise revolution

Clockwise revolution

Number of revolutions

—

Deceleration from rear internal 

gear

Same number of revolution as the 

under drive internal gear

Name

Mid sun gear

Mid carrier

Mid internal gear

Condition

Fixed

Output

Input

Direction of rotation

—

Clockwise revolution

Clockwise revolution

Number of revolutions

—

Deceleration from mid internal gear

Same number of revolution as the 

rear carrier

2013 EX

SHIFT MECHANISM

TM-45

< SYSTEM DESCRIPTION >

[7AT: RE7R01A]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

• The front sun gear and the under drive sun gear are fixed by the 2346 brake.
• The direct clutch gets engaged and connects the rear sun gear with the rear carrier.
• The mid sun gear is fixed by the low brake.
• Each planetary gear enters the state described below.

JSDIA0870GB

2013 EX

TM-46

< SYSTEM DESCRIPTION >

[7AT: RE7R01A]

SHIFT MECHANISM

Front planetary gear

Under drive planetary gear

Rear planetary gear

Mid planetary gear

“D

4

”, “DS

4

” and “M4” Positions

Name

Front sun gear

Front carrier

Front internal gear

Condition

Fixed

Output

Input

Direction of rotation

—

Clockwise revolution

Clockwise revolution

Number of revolutions

—

Deceleration from front internal 

gear

Same number of revolution as the 

input shaft

Name

Under drive sun gear

Under drive carrier

Under drive internal gear

Condition

Fixed

—

Input/Output

Direction of rotation

—

Clockwise revolution

Clockwise revolution

Number of revolutions

—

Deceleration from under drive in-

ternal gear

Same number of revolution as the 

front carrier

Name

Rear sun gear

Rear carrier

Rear internal gear

Condition

—

Output

Input

Direction of rotation

Clockwise revolution

Clockwise revolution

Clockwise revolution

Number of revolutions

Same number of revolution as the 

rear internal gear

Same number of revolution as the 

rear internal gear

Same number of revolution as the 

under drive internal gear

Name

Mid sun gear

Mid carrier

Mid internal gear

Condition

Fixed

Output

Input

Direction of rotation

—

Clockwise revolution

Clockwise revolution

Number of revolutions

—

Deceleration from mid internal gear

Same number of revolution as the 

rear carrier

2013 EX

SHIFT MECHANISM

TM-47

< SYSTEM DESCRIPTION >

[7AT: RE7R01A]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

• The front sun gear and the under drive sun gear are fixed by the 2346 brake.
• The direct clutch gets engaged and connects the rear sun gear with the rear carrier.
• The high and low reverse clutch gets engaged and connects the rear sun gear with the mid sun gear.
• Each planetary gear enters the state described below.

JSDIA0871GB

2013 EX

TM-48

< SYSTEM DESCRIPTION >

[7AT: RE7R01A]

SHIFT MECHANISM

Front planetary gear

Under drive planetary gear

Rear planetary gear

Mid planetary gear

“D

5

”, “DS

5

” and “M5” Positions

Name

Front sun gear

Front carrier

Front internal gear

Condition

Fixed

Output

Input

Direction of rotation

—

Clockwise revolution

Clockwise revolution

Number of revolutions

—

Deceleration from front internal 

gear

Same number of revolution as the 

input shaft

Name

Under drive sun gear

Under drive carrier

Under drive internal gear

Condition

Fixed

—

Input/Output

Direction of rotation

—

Clockwise revolution

Clockwise revolution

Number of revolutions

—

Deceleration from under drive in-

ternal gear

Same number of revolution as the 

front carrier

Name

Rear sun gear

Rear carrier

Rear internal gear

Condition

—

Output

Input

Direction of rotation

Clockwise revolution

Clockwise revolution

Clockwise revolution

Number of revolutions

Same number of revolution as the 

rear internal gear

Same number of revolution as the 

rear internal gear

Same number of revolution as the 

under drive internal gear

Name

Mid sun gear

Mid carrier

Mid internal gear

Condition

—

Output

Input

Direction of rotation

Clockwise revolution

Clockwise revolution

Clockwise revolution

Number of revolutions

Same number of revolution as the 

mid internal gear

Same number of revolution as the 

mid internal gear

Same number of revolution as the 

rear carrier

2013 EX