INFINITI QX56 2011 Factory Service Manual

STRUCTURE AND OPERATIONTM-23
< SYSTEM DESCRIPTION > [7AT: RE7R01B]
C
EF
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
“M1” Position
Name Front sun gear Front carrier Front internal gear
Condition — Output Input
Direction of rotation Counterc lockwise 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 Counterclockwi se 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
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

STRUCTURE AND OPERATIONTM-25
< SYSTEM DESCRIPTION > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
 Each planetary gear enters the state described below.
Front planetary gear
Under drive planetary gear
Rear planetary gear
Mid planetary gear
“D2” Position
Name Front sun gear Front carrier Front internal gear
Condition — Output Input
Direction of rotation Counterc lockwise 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 Counterclockwi se 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
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

STRUCTURE AND OPERATIONTM-27
< SYSTEM DESCRIPTION > [7AT: RE7R01B]
C
EF
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
“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
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

STRUCTURE AND OPERATIONTM-29
< SYSTEM DESCRIPTION > [7AT: RE7R01B]
C
EF
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
“D3” 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
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

STRUCTURE AND OPERATIONTM-31
< SYSTEM DESCRIPTION > [7AT: RE7R01B]
C
EF
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
“D4” 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
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