Infiniti M45 (Y34). Manual - part 35

A/T CONTROL SYSTEM

AT-25

D

E

F

G

H

I

J

K

L

M

A

B

AT

“D”, “M3”, “M4” and “M5” Positions 2nd Gear

●

The forward brake and the forward one-way clutch regulate reverse rotation of the mid sun gear.

●

The 3rd one-way clutch regulates reverse rotation of the front sun gear.

●

The direct clutch is coupled and the rear carrier and rear sun gear are connected.

●

During deceleration, the mid sun gear turns forward, so the forward one-way clutch idles and engine
brake is not activated.

1.

Front brake

2.

Input clutch

3.

Direct clutch

4.

High and low reverse clutch

5.

Reverse brake

6.

Forward brake

7.

Low coast brake

8.

1st one-way clutch

9.

Forward one-way clutch

10. 3rd one-way clutch

11.

Front sun gear

12. Input shaft

13. Mid internal gear

14.

Front internal gear

15. Rear carrier

16. Rear sun gear

17.

Mid sun gear

18. Front carrier

19. Mid carrier

20.

Rear internal gear

21. Intermediate shaft

22. Output shaft

23.

Parking gear

24. Parking pawl

SCIA3989E

AT-26

A/T CONTROL SYSTEM

“M1” and “M2” Positions 2nd Gear

●

The front brake fastens the front sun gear.

●

The forward brake and the forward one-way clutch regulate reverse rotation of the mid sun gear.

●

The direct clutch is coupled, and the rear carrier and rear sun gear are connected.

●

The low coast brake fastens the mid sun gear.

●

During deceleration, the low coast brake regulates forward rotation of the mid sun gear and the engine
brake functions.

1.

Front brake

2.

Input clutch

3.

Direct clutch

4.

High and low reverse clutch

5.

Reverse brake

6.

Forward brake

7.

Low coast brake

8.

1st one-way clutch

9.

Forward one-way clutch

10. 3rd one-way clutch

11.

Front sun gear

12. Input shaft

13. Mid internal gear

14.

Front internal gear

15. Rear carrier

16. Rear sun gear

17.

Mid sun gear

18. Front carrier

19. Mid carrier

20.

Rear internal gear

21. Intermediate shaft

22. Output shaft

23.

Parking gear

24. Parking pawl

SCIA3990E

A/T CONTROL SYSTEM

AT-27

D

E

F

G

H

I

J

K

L

M

A

B

AT

“D”, “M3”, “M4” and “M5” Positions 3rd Gear

●

The front brake fastens the front sun gear.

●

The direct clutch is coupled, and the rear carrier and rear sun gear are connected.

●

The high and low reverse clutch is coupled and the mid sun gear and rear sun gear are connected.

1.

Front brake

2.

Input clutch

3.

Direct clutch

4.

High and low reverse clutch

5.

Reverse brake

6.

Forward brake

7.

Low coast brake

8.

1st one-way clutch

9.

Forward one-way clutch

10. 3rd one-way clutch

11.

Front sun gear

12. Input shaft

13. Mid internal gear

14.

Front internal gear

15. Rear carrier

16. Rear sun gear

17.

Mid sun gear

18. Front carrier

19. Mid carrier

20.

Rear internal gear

21. Intermediate shaft

22. Output shaft

23.

Parking gear

24. Parking pawl

SCIA3991E

AT-28

A/T CONTROL SYSTEM

“D”, “M4” and “M5” Positions 4th Gear

●

The direct clutch is coupled, and the rear carrier and rear sun gear are connected.

●

The high and low reverse clutch is coupled and the mid sun gear and rear sun gear are connected.

●

The input clutch is coupled and the front internal gear and mid internal gear are connected.

●

The drive power is conveyed to the front internal gear, mid internal gear, and rear carrier and the three
planetary gears rotate forward as one unit.

1.

Front brake

2.

Input clutch

3.

Direct clutch

4.

High and low reverse clutch

5.

Reverse brake

6.

Forward brake

7.

Low coast brake

8.

1st one-way clutch

9.

Forward one-way clutch

10. 3rd one-way clutch

11.

Front sun gear

12. Input shaft

13. Mid internal gear

14.

Front internal gear

15. Rear carrier

16. Rear sun gear

17.

Mid sun gear

18. Front carrier

19. Mid carrier

20.

Rear internal gear

21. Intermediate shaft

22. Output shaft

23.

Parking gear

24. Parking pawl

SCIA3992E