Torque Converter Clutch And Drive Plate (For Sedan) Inspection

Drivetrain. Yaris. Ncp93, 131

  1. INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY

  2. INSPECT DRIVE PLATE AND RING GEAR

Torque Converter Clutch And Drive Plate (For Sedan) -- Inspection



1. INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY


Yaris. Ncp93, 131.U340E Automatic Transmission Transaxle.Automatic Transaxle System (For Sedan).Torque Converter Clutch And Drive Plate (For Sedan)  Inspection
  1. Inspect the one-way clutch.

    1. Install SST so that it fits into notch of the converter hub and the notch of the outer race of the one-way clutch.

      SST
      09350-32014(09351-32010,09351-32020)
    2. Press on the serrations of the stator with a finger and rotate it.
      Check that it rotates smoothly when turned clockwise and locks up when turned counterclockwise.

      SST
      09350-32014(09351-32010,09351-32020)
      If necessary, clean the converter and check the one-way clutch.
      Replace the converter if the one-way clutch still does not operate as specified.


    Yaris. Ncp93, 131.U340E Automatic Transmission Transaxle.Automatic Transaxle System (For Sedan).Torque Converter Clutch And Drive Plate (For Sedan)  Inspection
  1. Check the condition of the torque converter clutch assembly.

    1. If the inspection result of the torque converter clutch assembly meets any of the cases mentioned below, replace the torque converter clutch.

      Malfunction Item:
      Any metallic sound is heard from the torque converter clutch during stall test or when the shift lever is in the N position.
      The one-way clutch is released or locked in both directions.
      Fine powder exceeding the sample limit is identified in ATF.
      (See the sample.)
      HINT:
      The sample shows approximately. 0.25 liters (0.26 US qts, 0.22 lmp. qts) of ATF that is taken out from the removed torque converter clutch.
  1. Replace the ATF in the torque converter clutch.

    1. If the ATF is discolored and/or has a foul odor, completely stir the ATF in the torque converter clutch and drain it with the installation surface facing up.



  1. Clean and check the oil cooler and oil pipe line.



      Yaris. Ncp93, 131
    1. If the torque converter clutch is inspected or the ATF is changed, clean the oil cooler and oil pipe line.

      HINT:
      1. Spray compressed air of 196 kpa (2 kgf/cm2, 28 psi) from the inlet hose.
      2. If excessive fine powder is found in the ATF, add new ATF using a bucket pump and clean it again.


    2. Yaris. Ncp93, 131.U340E Automatic Transmission Transaxle.Automatic Transaxle System (For Sedan).Torque Converter Clutch And Drive Plate (For Sedan)  Inspection
    3. If the ATF is cloudy, inspect the oil cooler (radiator).



2. INSPECT DRIVE PLATE AND RING GEAR


    Yaris. Ncp93, 131.U340E Automatic Transmission Transaxle.Automatic Transaxle System (For Sedan).Torque Converter Clutch And Drive Plate (For Sedan)  Inspection
  1. Inspect the drive plate.

    1. Set up a dial indicator and measure the runout of the 6 positions around the torque converter fitting surface.

      Maximum runout:
      0.30 mm (0.0118 in.)
      If the runout is not within the specification, replace the drive plate and ring gear.
  1. Inspect the ring gear.

    1. Inspect the ring gear for damage.
      If the ring gear is damaged, replace the drive plate and ring gear.