Nissan Juke F15. Instruction — part 1296
TM-374
< SYSTEM DESCRIPTION >
[CVT: RE0F10D]
STRUCTURE AND OPERATION
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.
FINAL DRIVE AND DIFFERENTIAL
The deceleration gears are composed of 2 stages: primary deceleration (output gear, idler gear pair) and sec-
ondary deceleration (reduction gear, final gear pair). All of these gears are helical gears.
JSDIA2429GB
STRUCTURE AND OPERATION
TM-375
< SYSTEM DESCRIPTION >
[CVT: RE0F10D]
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The lubrication oil is the same as the CVT fluid which lubricates the entire transaxle.
TRANSAXLE : Oil Pressure System
INFOID:0000000012201094
Oil pressure required for operation of the transaxle transmission mechanism is generated by oil pump, oil
pressure control valve, solenoid valve, etc.
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TM-376
< SYSTEM DESCRIPTION >
[CVT: RE0F10D]
STRUCTURE AND OPERATION
TRANSAXLE : Component Description
INFOID:0000000012201095
FLUID COOLER & FLUID WARMER SYSTEM
Part name
Function
Torque converter
Increases engine torque and transmits it to the transaxle.
Oil pump
Utilizes a vane-type oil pump that is driven by the engine through the oil pump drive chain in order to
increase efficiency of pump discharge volume in low-speed zone and optimize pump discharge volume
in high-speed zone. Discharged oil from oil pump is transmitted to control valve. It is used as the oil of
primary and secondary pulley operation, the oil of clutch operation, and the lubricant for each part.
Forward clutch
The forward clutch is wet and multiple plate type clutch that consists of clutch drum, piston, drive plate,
and driven plate. It is a clutch to move the vehicle forward by activating piston hydraulically, engaging
plates, and directly connecting sun gear and input shaft.
Reverse brake
The reverse brake is a wet multiple-plate type brake that consists of transaxle case, piston, drive plate,
and driven plate. It is a brake to move the vehicle in reverse by activating piston hydraulically, engaging
plates, and fixing planetary gear.
Internal gear
The internal gear is directly connected to forward clutch drum. It is a gear that moves the outer edge of
pinion planet of planet carrier. It transmits power to move the vehicle in reverse when the planet carrier
is fixed.
Planet carrier
Composed of a carrier, pinion planet, and pinion shaft. This gear fixes and releases the planet carrier in
order to switch between forward and reverse driving.
Sun gear
Sun gear is a set part with planet carrier and internal gear. It transmits transmitted force to primary fixed
sheave. It rotates in forward or reverse direction according to activation of either forward clutch or re-
verse brake.
Input shaft
The input shaft is directly connected to forward clutch drum and transmits traction force from torque con-
verter. In shaft center, there are holes for hydraulic distribution to primary pulley and hydraulic distribution
for lockup ON/OFF.
Primary pulley
It is composed of a pair of pulleys (the groove width is changed freely in the axial direction) and the steel
belt. 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.
Secondary pulley
Steel belt
Instruction shaft
When the instruction shaft is in the P position, the parking rod that is linked to the instruction shaft rotates the
parking pole. When the parking pole rotates, it engages with the parking gear, fixing the parking gear. As
a result, the secondary pulley that is integrated with the parking gear is fixed.
Parking rod
Parking pawl
Parking gear
Output gear
The deceleration gears are composed of 2 stages: primary deceleration (output gear, idler gear pair) and
secondary deceleration (reduction gear, final gear pair). All of these gears are helical gears.
Idler gear
Reduction gear
Differential
Torque converter regulator
valve
Adjusts the feed pressure to the torque converter to the optimum pressure corresponding to the driving
condition.
Pressure regulator valve
Adjusts the discharge pressure from the oil pump to the optimum pressure (line pressure) corresponding
to the driving condition.
Torque converter clutch
control valve
Adjusts the torque converter engage and disengage pressures.
Instruction valve
Distributes the clutch operation pressure to each circuit according to the selector lever position.
Secondary reducing valve
Reduces line pressure and adjusts secondary pressure.
Primary reducing valve
Reduces line pressure and adjusts primary pressure.
Pilot valve A
Reduces line pressure and adjusts pilot pressure to the solenoid valves listed below.
• Primary pressure solenoid valve
• Secondary pressure solenoid valve
• Select solenoid valve
• Line pressure solenoid valve
Pilot valve B
Reduces pilot pressure and adjusts pilot pressure to the torque converter clutch solenoid valve.
STRUCTURE AND OPERATION
TM-377
< SYSTEM DESCRIPTION >
[CVT: RE0F10D]
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FLUID COOLER & FLUID WARMER SYSTEM : System Description
INFOID:0000000012201096
CVT FLUID COOLER SCHEMATIC
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 CVT fluid temperature is high.
SHIFT LOCK SYSTEM
SHIFT LOCK SYSTEM : System Description
INFOID:0000000012201097
• The shift lock is the mechanism provided to prevent quick start of a vehicle by incorrect operation of a drive
when the selector lever is in P position.
• Selector lever can be shifted from the P position to another position when the following conditions are satis-
fied.
- Ignition switch is ON.
- Stop lamp switch ON (brake pedal is depressed)
- Press the selector button.
SHIFT LOCK OPERATION AT P POSITION
When brake pedal is not depressed (no selector operation allowed)
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