All information about Jatco jf015e
Content
The Jatco JF015E hybrid variator is designed for installation on vehicles equipped with internal combustion engines up to 1800 cm³ (torque up to 180 Nm). A 2-stage planetary gearbox was introduced into the design of the unit, which made it possible to reduce the dimensions of the box crankcase. The equipment appeared in the production program of the plant in 2010.
Where applicable
The box is found in the following cars:
- Nissan Juke, Micra and Note, equipped with engines with displacement from 0,9 to 1,6 liters. Mounted on cars Qashqai, Sentra and Tiida, equipped with gasoline engines up to 1,8 liters.
- Renault Captur and Fluence with a 1,6 liter engine.
- Mitsubishi Lancer 10th generation with 1,5 and 1,6 liter engines.
- Small-sized Suzuki Swift, Wagon R, Spacia and Chevrolet Spark cars with gasoline power units up to 1,4 liters.
- Cars Lada XRAY with a 1600 cm³ engine.
Construction and resource
The transmission is equipped with a V-belt mechanism consisting of adjustable conical pulleys and a lamellar belt. Due to the synchronous change in the diameters of the pulleys, a smooth adjustment of the gear ratio is ensured. A push-type belt is installed in the box, a hydraulic clutch is located between the motor and the box. To ensure the circulation of the working fluid in the variator, a high-pressure rotary pump is used.
A 2-speed hydromechanical automatic machine has been introduced into the box design, which is necessary when the car is moving at speeds over 100 km / h. The introduction of an additional gearbox made it possible to avoid the operation of the variator in unfavorable conditions (when placing a lamellar belt at the outer edge of the cones). Switching to reverse gear is carried out in the hydromechanical part of the box, the variator is not involved in this case. With the help of the unit, the driver switches gear ratios in manual mode (from a number of fixed values).
The manufacturer estimates the resource of the box at 120-150 thousand kilometers. The stated figure is achieved with regular oil changes (every 30 thousand km) and a gentle operation mode (warming up before driving, smooth acceleration and movement at speeds up to 100-110 km / h). Boxes produced before 2014 have a reduced resource due to a number of nodes. Subsequent series of boxes have a modified pump and bearings, as well as an upgraded version of the software.
Service Jatco JF015E
You can not start moving in the winter on a cold box. To warm up the working fluid, a heat exchanger connected to the engine cooling system is used. Start moving smoothly, avoiding sudden jerks. The working fluid is checked after 6 months of operation, transparent oil is considered normal. If cloudiness is detected, the liquid changes along with the fine filter element (located on the box crankcase). To extend the service life, an annual preventive oil and filter change is recommended.
The design of the machine has a radiator connected to the box. The heat exchanger cells become clogged with dust and fluff, which leads to overheating of the oil. It is necessary to flush the radiators annually in a specialized service.
If there is no box heat exchanger in the design, then you can install the unit yourself (together with a thermostat that regulates the intensity of the oil flow through the cooling block).
Problems with this model
The disadvantage of the box is the contamination of the oil with metal particles formed during the abrasion of the cones and the pushing belt. Stuck valves disrupt the normal circulation of the working fluid, which leads to immobilization of the car. An additional problem is rolling bearings, which are damaged by metal chips. If there are problems associated with the variator, further movement is prohibited. The car is delivered to the place of repair with the help of a tow truck, movement in tow is not allowed.
Refusal to switch
The box design uses a hydraulic block with solenoids, which is located in the lower part of the crankcase. When chips enter the valves, the supply of working fluid is disrupted, the box operates in emergency mode with a fixed gear ratio. The machine must not be driven as there is a risk of irreversible damage to the cones by the belt.
dirty oil
The contamination of the oil in the box is due to the wear of the belt and conical pulleys. Particles are captured by magnetic inserts and filters, but when the elements become clogged, dirt remains in the working fluid. The hydraulic block is dirty, which leads to jerks when the machine is moving. Continued operation of the vehicle with degraded oil will result in fatal damage to the block valves and V-belt components.
Bearing breakage
Wear of the bearing supports of the primary and secondary shafts of the variator is rare. If the rolling elements or treadmills are damaged, the mutual position of the shafts is disturbed, which can cause the belt to warp and generate noise during operation. With further operation of the box, the volume of metal chips increases, which additionally wears out the friction surfaces and disables the bypass valves of the oil pump and the hydraulic unit.
Breakdown of the pump
The gearbox uses a rotary pump, unified with the assembly from the previous CVT model 011E. Metal particles or dirt entering the pressure reducing valve can cause the assembly to jam. In this case, the variator operates in emergency mode with a fixed gear ratio. The defect is observed on the boxes of the first years of production, later the manufacturer finalized the design of the valve.
Sun gear failure
The destruction of the sun gear, which is located in the hydromechanical unit, occurs due to sudden acceleration and prolonged movement at speeds above 140-150 km/h. Gear damage is a consequence of vibration loads that occur during sudden acceleration. If the gear wheel is destroyed, the vehicle cannot move forward, the reverse gear remains operational.
Device diagnostics
Primary transmission diagnostics is performed using a computer connected to the connector on the car. The technique allows you to find out the problems associated with the oil pump and belt slip on the pulleys. To determine the condition of the parts, it is required to drain the oil, and then separate the oil pan.
CVT repair
During the overhaul of the JF015E variator, the hydraulic transformer is serviced with the replacement of gaskets and seals. The regular heat exchanger has a reduced volume, the internal channels are clogged with dirt. If the owner of the car complains about overheating of the box, then an adapter is inserted instead of the heat exchanger, allowing you to mount the radiator. To check the temperature regime of operation, it is practiced to apply special stickers that change color when heated to 120 ° C.
To overhaul the box, you need to purchase a set of gaskets and seals and a set of clutches. Together with the friction blocks, the pump valve is often changed (to the original or repair one) and new input shaft bearings are installed. For the box, belts with 8 or 9 tapes are used, it is allowed to use an element from Honda CVTs (Bosch 901064), which is equipped with 12 tapes. If, upon opening the box, damage to the working surfaces of the cones is detected, then the elements are replaced with parts borrowed from a disassembled variator with mileage.
Whether to buy used
In the secondary market, the cost of the assembled unit is from 60 thousand rubles. It is recommended to buy contract units that have undergone diagnostics and refurbishment at specialized service centers. Its price reaches 100-120 thousand rubles, but the seller gives a guarantee for the variator, confirmed by documents. The cost of aggregators without mileage reaches 300 thousand rubles, such nodes are installed in the event of a car repair under a factory warranty.
