2011 INFINITI QX56 clutch

STRUCTURE AND OPERATIONTM-17
< SYSTEM DESCRIPTION > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
1. Low brake 2. Drum support 3. Reverse brake
4. Direct clutch 5. High and low reverse clutch 6. 2nd one-way clutch
7.
*1Rear carrier 8. Mid carrier 9. Input clutch
10.
*2Front sun gear 11 .*3Front carrier 12. Under drive carrier
13. 1st one-way clutch 14. Front brake 15. 2346 brake
16.
*4Input shaft 17. Torque converter 18. Oil pump
19.
*2Under drive sun gear 20.*3Under drive internal gear21.*4Front internal gear
22. Mid sun gear 23.
*1Mid internal gear 24. Rear sun gear
25. Rear internal gear 26. High and low reverse clutch hub 27. Control valve & TCM
28. Parking gear 29. Adapter case 30. Output shaft
*1: 7 and 23 are one unit.
*2: 10 and 19 are one unit.
*3: 11 and 20 are one unit.
*4: 16 and 21 are one unit.
JSDIA1774ZZ
Revision: 2010 May2011 QX56

STRUCTURE AND OPERATIONTM-19
< SYSTEM DESCRIPTION > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
With the use of 4 sets of planetary gears, A/T enabl es 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
JSDIA1455GB
Revision: 2010 May2011 QX56

TM-22
< SYSTEM DESCRIPTION >[7AT: RE7R01B]
STRUCTURE AND OPERATION
 The 1st one-way clutch regulates countercloc
kwise rotation of the under drive carrier.
 The 2nd one-way clutch regulates countercl ockwise 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
Revision: 2010 May2011 QX56

TM-24
< SYSTEM DESCRIPTION >[7AT: RE7R01B]
STRUCTURE AND OPERATION
 The 1st one-way clutch and the front brake regulate c
ounterclockwise 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
Revision: 2010 May2011 QX56

TM-26
< SYSTEM DESCRIPTION >[7AT: RE7R01B]
STRUCTURE AND OPERATION
 The front sun gear and the under drive sun gear are fixed by the 2346 brake.
 The 2nd one-way clutch regulates countercl
ockwise 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
Revision: 2010 May2011 QX56

TM-28
< SYSTEM DESCRIPTION >[7AT: RE7R01B]
STRUCTURE AND OPERATION
 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
Revision: 2010 May2011 QX56

TM-30
< SYSTEM DESCRIPTION >[7AT: RE7R01B]
STRUCTURE AND OPERATION
 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
Revision: 2010 May2011 QX56

TM-32
< SYSTEM DESCRIPTION >[7AT: RE7R01B]
STRUCTURE AND OPERATION
 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 connec
ts the rear sun gear with the mid sun gear.
 Each planetary gear enters the state described below.
JSDIA0871GB
Revision: 2010 May2011 QX56