TORQUE CONVERTER AND DRIVE PLATE INSPECTION

  1. INSPECT TORQUE CONVERTER ASSEMBLY

    1. Inspect the one-way clutch.

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

        A011UIR

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

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

        Text in Illustration
        A011T1X Difficult
        A011V7Q Smooth

    2. Inspect the torque converter assembly.

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      If any of the following problems are present, replace the torque converter assembly.

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

      • 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 turns smoothly or locks in both directions.

      • The amount of powder in the ATF is more than the sample shown in the illustration (refer to the sample).

      Tech Tips

      The sample shows approximately 0.025 liters (0.026 US qts, 0.022 Imp. qts) of ATF that was removed from a torque converter.

    3. Replace the ATF in the torque converter.

      Tech Tips

      If the ATF is discolored or has a foul odor, stir the ATF in the torque converter before replacing the ATF.

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

      A011TM6

      Tech Tips

      • If the torque converter is inspected or the ATF is replaced, it is necessary to clean the oil cooler and oil pipe line.

      • 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.

      • If the ATF is cloudy, inspect the oil cooler.

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

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      Note

      Make sure that all of the bolts are the same length and that the specified bolts are used.

      Text in Illustration
      *a Correct
      *b Incorrect
      *c Bottom is damaged

      Tech Tips

      If there is any damage to the tip of a bolt for the torque converter or to the bottom of a bolt hole, replace the bolt and torque converter.

  2. INSPECT DRIVE PLATE

    1. Check the drive plate for damage.

    2. Set up a dial indicator and measure the runout at the 6 areas on the drive plate surface that contact the torque converter.

      A011T3FE01
      Text in Illustration
      A011TKF Measuring Point
      Maximum runout
      0.30 mm (0.0118 in.)

      • If the runout is more than the maximum or the drive plate is damaged, replace the drive plate.

      • If installing a new drive plate, confirm that the spacers are oriented properly before tightening the bolts Click here.