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Home >> Toyota >> 2019 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 41 (Automatic Transmission (U760E) - Service Information (2 Of 2)) >> Torque Converter And Drive Plate >> Inspection [12/2013 - ] >> Procedure

Inspection [12/2013 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. INSPECT TORQUE CONVERTER ASSEMBLY 
    1. Inspect the one-way clutch.
      1. Press on the spline of the stator with a finger and rotate the spline. Check that the spline rotates smoothly when turned clockwise and rotates with difficulty when turned counterclockwise.
        GTY443170Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Difficult
        Smooth

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

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

    2. Inspect the torque converter assembly.

      If any of the following problems are present, 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 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).

      HINT: 

      The sample shows approximately 0.025 liters (0.026 US qts, 0.022 Imp. qts) of ATF in petri dish, which has been taken from a torque converter assembly.

      GTY369362Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Sample showing maximum allowable amount of powder in ATF
      *b Full Scale
    3. Replace the ATF in the torque converter assembly.

      HINT: 

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

    4. Clean and check the oil cooler and oil pipe line.
      GTY448136Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      • If the torque converter assembly is inspected or the ATF is replaced, it is necessary to clean the transmission 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 transmission oil cooler and oil pipe line again.
      • If the ATF is cloudy, inspect the transmission oil cooler.
    5. Prevent deformation of the torque converter assembly and damage to the oil pump gear.
      GTY450006Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Correct
      *b Incorrect
      *c Bottom is damaged
      NOTE:

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

      HINT: 

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

  2. INSPECT DRIVE PLATE AND RING GEAR SUB-ASSEMBLY 
    1. Check the drive plate and ring gear sub-assembly for damage.
      GTY434202Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Measurement Point
    2. Set up a dial indicator and measure the runout at the 6 areas on the drive plate and ring gear sub-assembly surface that contact the torque converter assembly.

      Maximum Runout

      0.30 mm (0.0118 in.)

      HINT: 

      • If the runout is more than the maximum or the drive plate and ring gear sub-assembly is damaged, replace the drive plate and ring gear sub-assembly.
      • If installing a new drive plate and ring gear sub-assembly, confirm that the spacers are oriented properly before tightening the bolts.

        Refer to PROCEDURE - Step 2 , or refer to PROCEDURE - Step 2

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