Infiniti FX35, FX50 (S51). Manual - part 1857

SHIFT MECHANISM

TM-235

< SYSTEM DESCRIPTION >

[7AT: RE7R01B (VK50VE)]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

Front planetary gear

Rear planetary gear

Mid planetary gear

“D

7

”, “DS

7

” and “M7” 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

Rear sun gear

Rear carrier

Rear internal gear

Condition

—

Input/Output

Input

Direction of rotation

Clockwise revolution

Clockwise revolution

Clockwise revolution

Number of revolutions

Acceleration from rear carrier

Same number of revolution as the 

input shaft

Same number of revolution as the 

front carrier

Name

Mid sun gear

Mid carrier

Mid internal gear

Condition

—

Output

Input

Direction of rotation

Clockwise revolution

Clockwise revolution

Clockwise revolution

Number of revolutions

Acceleration from mid internal gear

Acceleration from mid internal gear

Same number of revolution as the 

input shaft

TM-236

< SYSTEM DESCRIPTION >

[7AT: RE7R01B (VK50VE)]

SHIFT MECHANISM

• The under drive carrier is fixed by the front brake.
• The input clutch gets engaged and connects the mid internal 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 state described below.

JSDIA0874GB

SHIFT MECHANISM

TM-237

< SYSTEM DESCRIPTION >

[7AT: RE7R01B (VK50VE)]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

Front planetary gear

Under drive planetary gear

Rear planetary gear

Mid planetary gear

“R” 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 inter-

nal gear

—

Same number of revolution as the 

front carrier

Name

Rear sun gear

Rear carrier

Rear internal gear

Condition

—

Input/Output

Input

Direction of rotation

Clockwise revolution

Clockwise revolution

Clockwise revolution

Number of revolutions

Acceleration from rear carrier

Same number of revolution as the 

input shaft

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

Acceleration from mid internal gear

Acceleration from mid internal gear

Same number of revolution as the 

input shaft

TM-238

< SYSTEM DESCRIPTION >

[7AT: RE7R01B (VK50VE)]

SHIFT MECHANISM

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

NOTE:
The front brake operates at the fixed speed or less.

• The rear carrier and the mid internal gear are fixed by the reverse brake.
• The mid sun gear rotates at the same speed as the rear sun gear by operation of the 2nd one-way clutch

and the high and low reverse clutch.
NOTE:
The high and low reverse clutch operates at the fixed speed or less.

JSDIA0875GB