TORQUE CONVERTER CLUTCH AND DRIVE PLATE INSPECTION


  1. INSPECT TORQUE CONVERTER ASSEMBLY


    1. A019LX5E09
      Text in Illustration
      *a Smooth
      *b Difficult
      *c Spline

      Inspect the one-way clutch.


      1. Press on the spline of the stator with a finger and rotate it. Check that it rotates smoothly when turned clockwise and rotates with difficulty when turned counterclockwise.

        If necessary, clean the converter and recheck the one-way clutch.

        Replace the torque converter assembly if the one-way clutch still fails the inspection.

    2. A019NQ2E03
      Text in Illustration
      *a Sample showing maximum allowable amount of powder in ATF

      Determine the condition of the torque converter assembly.


      1. If the inspection result of the torque converter assembly satisfies one of the following conditions, replace the torque converter assembly.


          Malfunction

        • A metallic sound is emitted from the torque converter assembly during the stall test or when the shift lever is moved to N.

        • The one-way clutch rotates smoothly or with difficulty in both directions.

        • The amount of powder in the ATF is greater than the sample shown in the illustration (see the sample).

          Text in Illustration
          *a Sample showing maximum allowable amount of powder in ATF

          Tech Tips

          The sample shows approximately 0.025 liters (0.026 US qts, 0.022 Imp. qts) of ATF that is taken out from the removed torque converter assembly.

    3. Replace the ATF in the torque converter assembly.


      1. If the ATF is discolored and/or has a foul odor, stir the ATF in the torque converter assembly and drain it.

    4. A019ORP

      Clean and check the oil cooler and oil pipe line.


      1. If the torque converter assembly is inspected or the ATF is replaced, clean the oil cooler and oil pipe line.

        Tech Tips


        • Apply compressed air of 196 kPa (2.0 kgf/ cm2, 28 psi) into the inlet hose.

        • If a large amount of powder is found in the ATF, add new ATF using a bucket pump and clean the oil cooler and oil pipe line again.

      2. If the ATF is cloudy, inspect the oil cooler (radiator).

    5. A019NFKE35
      Text in Illustration
      *a Correct
      *b Incorrect
      *c The bottom is damaged.

      Prevent deformation of the torque converter assembly and damage to the oil pump gear.


      1. When any marks due to interference are found on the end of the bolt for the torque converter or on the bottom of the bolt hole, replace the bolt and the torque converter assembly.

      2. All of the bolts should be the same length.

      3. Bolts with washers must be used.

  2. INSPECT DRIVE PLATE


    1. A019K82E01

      Check the drive plate for damage.

    2. Set up a dial indicator and measure the runout of the 6 portions around the torque converter assembly contact surfaces.

      Text in Illustration
      A019OR9 Measurement Point
      Maximum runout
      0.30 mm (0.0118 in.)

      • If the runout is not within the specification or the drive plate is damaged, replace the drive plate Click here.