Nissan Juke F15. Manual - part 1244

TM-166

< SYSTEM DESCRIPTION >

[CVT: RE0F10B]

STRUCTURE AND OPERATION

TRANSAXLE : Belt & Pulley

INFOID:0000000012200873

STRUCTURE

MECHANISM

It is composed of a pair of pulleys (the groove width is changed freely in the axial direction) and the steel belt

(the steel plates are placed continuously and the belt is guided with the multilayer steel rings on both sides).

The groove width changes according to wrapping radius of steel belt and pulley from low status to overdrive

status continuously with non-step. It is controlled with the oil pressures of primary pulley and secondary pulley.

STEEL BELT

It is composed of multiple steel plates (A) and two steel rings (B)

stacked to a several number. The feature of this steel belt transmits

power with compression of the steel plate in contrast with transmis-

sion of power in pulling with a rubber belt. Friction force is required

with the pulley slope to transmit power from the steel plate. The force

is generated with the following mechanism:

Oil pressure applies to the secondary pulley to nip the plate. 

⇒The

plate is pushed and extended outward. 

⇒The steel ring shows with-

stands. 

⇒Pulling force is generated on the steel ring. ⇒The plate of

the primary pulley is nipped between the pulley. 

⇒Friction force is

generated between the steel belt and the pulley. 

Therefore, responsibilities are divided by the steel plate that trans-

mits the power with compression and the steel ring that maintains necessary friction force.   In this way, the

JSDIA2428GB

JSDIA2431ZZ

STRUCTURE AND OPERATION

TM-167

< SYSTEM DESCRIPTION >

[CVT: RE0F10B]

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tension of the steel ring is distributed on the entire surface and stress variation is limited, resulting in good

durability. 

PULLEY

The primary pulley (input shaft side) and the secondary pulley (output shaft side) have the shaft with slope

(fixed cone surface), movable sheave (movable cone surface that can move in the axial direction) and oil pres-

sure chamber at the back of the movable sheave. 

The movable sheave slides on the shaft to change the groove width of the pulley. Input signals of engine load

(accelerator pedal opening), primary pulley speed and secondary pulley speed change the operation pres-

sures of the primary pulley and the secondary pulley, and controls the pulley groove width. 

FLUID COOLER & FLUID WARMER SYSTEM
FLUID COOLER & FLUID WARMER SYSTEM : System Description

INFOID:0000000012200874

CVT FLUID COOLER SCHEMATIC

JSDIA2429GB

TM-168

< SYSTEM DESCRIPTION >

[CVT: RE0F10B]

STRUCTURE AND OPERATION

COMPONENT DESCRIPTION

CVT Oil Warmer

• The CVT oil warmer (1) is installed on the front part of transaxle

assembly.

• When engine is started while engine and CVT are cold, engine

coolant temperature rises more quickly than CVT fluid tempera-

ture. CVT oil warmer is provided with two circuits for CVT and

engine coolant respectively so that warmed engine coolant warms

CVT quickly. This helps shorten CVT warming up time, improving

fuel economy.

• A cooling effect is obtained when A/T fluid temperature is high.

Heater Thermostat

The heater thermostat (1) is installed on the front part of transaxle

assembly.

MECHANICAL SYSTEM

JSDIA2826GB

JSDIA2228ZZ

JSDIA2439ZZ

STRUCTURE AND OPERATION

TM-169

< SYSTEM DESCRIPTION >

[CVT: RE0F10B]

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MECHANICAL SYSTEM : System Diagram

INFOID:0000000012200875

MECHANICAL SYSTEM : System Description

INFOID:0000000012200876

Traction force of engine is transmitted to wheel via torque converter, planetary gear, belt, pulley, differential

gear, and others. Also includes a parking mechanism that mechanically fixes secondary pulley when selector

lever is shifted to the “P” position.

ACTIVATION STATE ACCORDING TO EACH SHIFTING

×: Operates

POWER TRANSMISSION

“P” position

• Traction force from input shaft is not transmitted to primary pulley because forward clutch and reverse brake

are not engaged and run idle.

• Torque from the wheels is not transmitted to secondary pulley because secondary pulley is mechanically

fixed when parking pole that is linked with selector lever is engaged with parking gear that is integrated with

secondary pulley.

JSDIA2432GB

Selector lever position

Secondary 

pressure 

sensor

Solenoid valve

Step motor

Line pres-
sure sole-
noid valve

Secondary 

pressure sole-

noid valve

Torque con-

verter solenoid 

valve

Lock-up select sole-

noid valve

P

×

×

×

×

R

×

×

×

×

×

N

×

×

×

×

×

D (Low)

×

×

×

×

×

D (High)

×

×

×

×

×

D

(Lock-up)

×

×

×

×

×