Reseals the primary and secondary pulley pistons in a Jatco JF011E CVT so the pulleys hold belt clamp pressure again on Nissan Altima and Rogue.
When a 2009-2012 Nissan Altima or Rogue, a 2007-2012 Sentra, or a 2007-2012 Dodge Caliber with the JF011E CVT judders pulling away, lets the rpm climb without the car speeding up, or drones under light throttle, the pulleys may not be getting the clamp pressure the computer is asking for. This kit, part reference K181731-BL, reseals the pistons behind the primary (drive) and secondary (driven) pulleys. It is the pulley-side hydraulic hardware only. It does not include the push belt, filter, pan gasket or the clutch frictions.
Each pulley in the JF011E is two cones: one fixed and one that slides. A hydraulic piston behind the sliding cone pushes it toward its partner, and that squeeze sets both the ratio and how hard the steel push belt is gripped. Pulley pressure in this unit can run past 800 psi, and the only thing keeping it in the chamber is the piston sealing. Once those seals harden or get nicked, pressure bleeds off internally. The transmission computer sees the ratio drift, commands more pressure, and the belt still slips against the cone faces. Left alone, that slip polishes the sheaves and the job grows from seals to hard parts.
The JF011E has primary and secondary pulley pressure sensors inside the case, and their signal runs from about 0.5 volts at zero pressure to 4.5 volts near 870 psi. Graph both on a scope during a drive. If the solenoids are commanding pressure and the sensor shows it collapsing under load, the leak is downstream in the pulley circuit. If commanded pressure itself is low, look at the valve body first; the Sonnax wear guide links the secondary pressure regulator valve to push belt slippage and chatter on acceleration. A JF011E valve body with stepper motor and sensors covers that case. Our CVT slipping under load guide walks through the same split.
The listing covers the Jatco JF011E / RE0F10A in the 2009-2012 Nissan Altima, 2009-2012 Nissan Rogue, 2007-2012 Nissan Sentra CVT and 2007-2012 Dodge Caliber. Jatco revised the pulley assembly during the production run, so compare your piston and pulley shape with the product photos before ordering, or send the year and VIN and we will check it. The V6 Altima uses a different CVT and is not covered. Browse other JF011E parts on the CVT parts page.
| Transmission | |
| Part reference | |
| Covers | |
| Fitment | |
| Not included | |
| Shipping weight | |
| Package size |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. It covers the primary and secondary pulley piston sealing only. The belt, filter, pan gasket and clutch frictions are sold separately.
The listing covers the JF011E in the 2009-2012 Nissan Altima and Rogue, 2007-2012 Sentra CVT and 2007-2012 Dodge Caliber. Compare your pulley and piston shape with the photos or send your year and VIN.
No. The pulleys sit inside the case, so the unit has to come out and the case has to be split to reach the pistons.
A speed-related whine on the JF011E usually comes from pulley bearings or belt wear, not piston seals. This kit targets judder, flare and slip from lost pulley pressure.
Use Nissan NS-2 in the Nissan models or the CVT fluid Dodge specifies for the Caliber. Reset the fluid deterioration counter where equipped and drive the relearn cycle before judging the repair.
