TRANSAXLE ASSEMBLYTM-207
< UNIT REMOVAL AND INSTALLATION > [CVT: RE0F10D]
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2. Disconnect the transaxle harness connectors.
3. Disconnect the CVT oil warmer water hoses from engine side. Refer to TM-199, "WATER HOSE :
Removal and Installation".
4. Remove the transaxle to engine and engine to transaxle bolts.
5. Remove the CVT fluid charging pipe.
6. Separate the engine from the transaxle assembly. Refer to EM-84, "Removal and Installation"
.
NOTE:
Using paint, put matching marks on the drive plate and torque converter when removing the torque con-
verter to drive plate nuts.
7. Remove transmission bracket.
INSTALLATION
Installation is in the reverse order of removal.
NOTE:
Write down the serial number of the new transaxle assembly.
CAUTION:
• When replacing an engine or tr ansaxle you must make sure any dowels are installed correctly during
re-assembly.
• Improper alignment caused by missing dowels m ay cause vibration, oil leaks or breakage of driv-
etrain components.
• Do not reuse O-rings or copper sealing washers.
• When turning crankshaft, turn it clockwise as viewed from the front of the engine.
• When tightening the nuts for the torque converter while securing the crankshaft pulley bolt, be sure
to confirm the tightening torque of the crankshaft pulley bolt. Refer to EM-62, "Removal and Installa-
tion".
• After converter is installed to drive plate, rota te crankshaft several turns to check that CVT rotates
freely without binding.
• When installing the CVT to the engine, align the ma tching mark on the drive plate with the matching
mark on the torque converter.
When installing the CVT to the engine, attach the bolts in accor-
dance with the following standard.
• (A) : Transaxle assembly to engine assembly.
• (B) : Engine assembly to transaxle assembly.
Bolt No.123456
Number of
bolts 132212
JSDIA4208GB
ALDIA0040ZZ
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TM-212
< SERVICE DATA AND SPECIFICATIONS (SDS) [CVT: RE0F10D]
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationINFOID:0000000009464167
*1: Refer to
MA-11, "FOR USA AND CANADA : Fluids and Lubricants".
*2: The CVT fluid capacity is the reference value.
Shift CharacteristicsINFOID:0000000009464168
Unit: rpm
CAUTION:
Lock-up is engaged at th e vehicle speed of approximately 18 km/h (12 MPH) to 40 km/h (24 MPH).
Stall SpeedINFOID:0000000009464169
Torque ConverterINFOID:0000000009464170
Unit: mm (in)
Heater ThermostatINFOID:0000000009464171
Standard
Reference value
Applied model Engine QR25DE
Axle 2WD
Transaxle model RE0F10D
Transaxle gear ratio D position 2.648 – 0.380
R position 0.745
Final drive 4.828
Recommended fluid Genuine NISSAN CVT Fluid NS-3
*1
Fluid capacity liter (US qt, Imp qt) Approx. 7.4 (7-7/8, 6-1/2)*2
CAUTION:
• Use only Genuine NISSAN CVT Fluid NS-3. Never mix with other fluid.
• Using CVT fluid other than Genuine NISSAN CVT Fluid NS-3 will deteriorate in driveability and CVT durability, and may dam-
age the CVT, which is not covered by the NISSAN new vehicle limited warranty.
Throttle position Shift pattern Engine speed
At 40 km/h (25 MPH) At 60 km/h (37 MPH)
2/8 “D” position 1,490 – 1,650 1,570 – 1,740
“D” position (O/D OFF condition) 2,950 – 3,260 3,040 – 3,360
8/8 “D” position 3,900 – 4,310 5,230 – 5,780
“D” position (O/D OFF condition) 3,520 – 3,890 4,280 – 4,730
Stall speed 2,290 – 2,520 rpm
Distance “A” between the converter housing and torque converter 14.4 (0.567)
Va l v e l i f tMore than 5.0 mm (0.197 in)
Valve opening temperature 71 °C (160 °F)
Minimum valve lift 5.0 mm/85 °C (0.197 in/203 °F)
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
PRECAUTIONSTM-215
< PRECAUTION > [CVT: RE0F10E]
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On Board Diagnosis (OBD) System of CVT and EngineINFOID:0000000009464176
The TCM and ECM have an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to
warn the driver of a malfunction causing emission deterioration.
CAUTION:
• Be sure to turn the ignition switch OFF and di sconnect the battery cable from the negative terminal
before any repair or inspection work. The open/s hort circuit of related switches, sensors, solenoid
valves, etc. will cause the MIL to light up.
• Be sure to connect and lock the connectors secure ly after work. A loose (unlocked) connector will
cause the MIL to light up due to an open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
• Be sure to route and secure the harnesses properly after work. Interference of the harness with a
bracket, etc. may cause the MIL to light up due to a short circuit.
• Be sure to connect rubber tubes properly afte r work. A misconnected or disconnected rubber tube
may cause the MIL to light up due to a malfunction of the EGR system or fuel injection system, etc.
• Be sure to erase the unnecessary malfunction informa tion (repairs completed) from the TCM and
ECM before returning the vehicle to the customer.
Removal and Installation Proc edure for CVT Unit ConnectorINFOID:0000000009464177
REMOVAL
• Rotate bayonet ring counterclockwise. Pull out CVT unit har-
ness connector upward and remove it.
INSTALLATION
1. Align marking on CVT unit harness connector terminal with marking on bayonet ring. Insert CVT unit harness connector.
2. Rotate bayonet ring clockwise.
3. Rotate bayonet ring clockwise until marking on CVT unit har- ness connector terminal body is aligned with the slit on bayo-
net ring as shown in the figure (correctly fitting condition).
CAUTION:
SCIA6685J
JPDIA0294ZZ
JPDIA0295ZZ
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COMPONENT PARTSTM-223
< SYSTEM DESCRIPTION > [CVT: RE0F10E]
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NOTE:
• The principle of the linear solenoid valve utilizes the fa ct that the force pressing on the valve spool installed
inside the coil increases nearly in proportion to the current . This allows it to produce a fluid pressure that is
proportional to this pressing force.
• The N/H (normal high) produces hydraulic control when the coil is not energized.
CVT CONTROL SYSTEM : Se lect Solenoid ValveINFOID:0000000009464191
• The select solenoid valve is installed to control valve.
• The select solenoid valve adjusts the tightening pressure of the forward clutch and reverse brake. For infor-
mation about the forward clutch and reverse brake, refer to TM-229, "TRANSAXLE : Component Descrip-
tion".
• The select solenoid valve uses the linear solenoid valve [N/H (normal high) type]. NOTE:
• The principle of the linear solenoid valve utilizes the fa ct that the force pressing on the valve spool installed
inside the coil increases nearly in proportion to the current . This allows it to produce a fluid pressure that is
proportional to this pressing force.
• The N/H (normal high) type produces hydraulic control when the coil is not energized.
CVT CONTROL SYSTEM : Torque Converter Clutch Solenoid ValveINFOID:0000000009464192
• The torque converter clutch solenoid valve is installed to control valve.
• The torque converter clutch solenoid valve controls the torque converter clutch control valve. For information
about the torque converter clutch control valve, refer to TM-229, "TRANSAXLE : Component Description"
.
• The torque converter clutch solenoid valve utilizes a linear solenoid valve [N/L (normal low) type]. NOTE:
• The principle of the linear solenoid valve utilizes the fa ct that the force pressing on the valve spool installed
inside the coil increases nearly in proportion to the current . This allows it to produce a fluid pressure that is
proportional to this pressing force.
• The N/L (normal low) type does not produce hydraulic control when the coil is not energized.
CVT CONTROL SYSTEM : Line Pressure Solenoid ValveINFOID:0000000009464193
• The line pressure solenoid valve is installed to control valve.
• The line pressure solenoid valve controls the pressu re regulator valve. For information about the pressure
regulator valve, refer to TM-229, "TRANSAXLE : Component Description"
.
• The line pressure solenoid valve uses the linear solenoid valve [N/H (normal high) type]. NOTE:
• The principle of the linear solenoid valve utilizes the fa ct that the force pressing on the valve spool installed
inside the coil increases nearly in proportion to the current . This allows it to produce a fluid pressure that is
proportional to this pressing force.
• The N/H (normal high) produces hydraulic control when the coil is not energized.
CVT CONTROL SYSTEM : Paddle ShifterINFOID:0000000009464194
• The paddle shifter is installed to the steering.
• The paddle shifter transmits shift up and shift down switch signals to the combination meter. Then TCM
receives signals from the combination meter via CAN communication.
PADDLE SHIFTER FUNCTION
CVT CONTROL SYSTEM : Sh ift Position IndicatorINFOID:0000000009464195
TCM transmits shift position signal to combination mete r via CAN communication. The actual shift position is
displayed on combination meter according to the signal.
SHIFT LOCK SYSTEM
Selector lever po-
sition Function
D Although driving in manual mode is possible, selector lever automatically returns to D position after a certain period
of time because the selector lever is not fixed in manual mode.
DS Driving with the selector lever fixed in manual mode is possible.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
TM-224
< SYSTEM DESCRIPTION >[CVT: RE0F10E]
COMPONENT PARTS
SHIFT LOCK SYSTEM : Co mponent Parts Location
INFOID:0000000009464196
COMPONENT DESCRIPTION
ALDIA0346ZZ
No. Component Function
1. Stop lamp switch • The stop lamp switch turns ON when the brake pedal is depressed.
• When the stop lamp switch turns ON, the shift lock solenoid is energized.
2. Shift lock solenoid It operates according to the signal from the stop lamp switch and moves the lock lever.
3. Park position switch It detects that the selector lever is in “P” position.
4. Shift lock release button Forcibly releases the shift lock when pressed.
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TM-226
< SYSTEM DESCRIPTION >[CVT: RE0F10E]
STRUCTURE AND OPERATION
TRANSAXLE : Operation Status
INFOID:0000000009464198
× : Engaged or applied.
TRANSAXLE : Trans axle MechanismINFOID:0000000009464199
TORQUE CONVERTER (WITH LOCK-UP FUNCTION)
In the same way as a conventional A/T, the torque c onverter is a system that increases the engine torque and
transmits the torque to the transaxle. A symmetr ical 3-element, 1-stage, 2-phase type is used here.
OIL PUMP
Utilizes a vane-type oil pump that is driven by the engi ne 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 contro l valve. It is used as the oil of primary and second-
ary pulley operation, the oil of clutch operation, and the lubricant for each part.
PLANETARY GEAR
• A planetary gear type of forward/reverse selector me chanism is installed between the torque converter and
primary pulley.
• The power from the torque converter is input via the i nput shaft, operating a wet multi-plate clutch by means
of hydraulic pressure to switch between forward and reverse driving.
Operation of Planetary gear
BELT & PULLEY
It is composed of a pair of pulleys (the groove width is changed freely in the axial direction) and the chain belt
.The groove width changes according to wrapping radius of chain belt and pulley from low status to overdrive
status continuously with non-step. It is controlled wit h the oil pressures of primary pulley and secondary pulley.
Chain belt
Selector lever
position Parking mech-
anism Forward
clutch Reverse brake Primary pulley Secondary
pulley Chain belt Final drive
P ×
R ×××××
N
D × ××××
DS × ××××
JSDIA2426GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
STRUCTURE AND OPERATIONTM-227
< SYSTEM DESCRIPTION > [CVT: RE0F10E]
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The chain belt consists of approximately 150 locker pins and
1,000 link plates . Chains are rotated by locker pins sandwiched by
pulleys. This produces tension difference in chains among pulleys.
Accordingly, the power is transferred by the tension.
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 gr oove 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
JSDIA3643ZZ
JSDIA2429GB
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STRUCTURE AND OPERATIONTM-229
< SYSTEM DESCRIPTION > [CVT: RE0F10E]
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TRANSAXLE : Component DescriptionINFOID:0000000009464201
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 tr ansmitted 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 chain 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
Chain belt
Manual shaft When the manual shaft is in the P position, the parking rod that is linked to the manual 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.
Manual 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.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM