Torque Converter Clutch And Drive Plate: Inspection

INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY
1. Inspect the one-way clutch.
  1. Set SST into the inner race of the one-way clutch.
    SST 09350-32014 (09351-32010)
    
    Fig 1: Setting SST Into Inner Race Of One-Way Clutch
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Install SST so that it fits in the notch of the converter hub and outer race of the one-way clutch.
    SST 09350-32014 (09351 -32010, 09351-32020)
  3. Stand the torque converter and turn the SST.
    OK: If the one-way clutch is turned clockwise, it rotates freely, and if turned counterclockwise, it locks.
    
    Fig 2: Standing Torque Converter And Turning SST
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Determine the condition of the torque converter clutch assembly.
  1. If the inspection result of the torque converter clutch assembly satisfies the following conditions, replace the torque converter clutch assembly.
    Malfunction item:
    
    A metallic sound is emitted from the torque converter clutch assembly during the stall test or when the shift lever is moved to the N position.
    
    The one-way clutch is free or locked in both directions.
    
    The amount of powder in the ATF is greater than the sample shown on the illustration (see the sample).
    
    HINT:
    
    The sample shows ATF of approximately 0.25 liters (0.26 US qts, 0.22 lmp. qts) that is taken out from the removed torque converter clutch.
3. Exchange 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.
    
    Fig 3: Identifying ATF Powder
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Clean and check the oil cooler and oil pipe line.
  1. If the torque converter clutch is inspected or the ATF is exchanged, clean the oil cooler and oil pipe line.
    HINT:
    - Apply compressed air of 196 kPa (2 kgf/cm² , 28 psi) into the inlet hose.
    - If an excessive amount of fine powder is identified in the ATF, add new ATF using a bucket pump and clean it again.
  2. If the ATF is cloudy, inspect the oil cooler (radiator).
    
    Fig 4: Applying Compressed Air Of Into Inlet Hose
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Prevent deformation of the torque converter clutch and damage to the oil pump gear.
  1. When any marks due to interference are found on the end of the bolts for the torque converter clutch and on the bottom of the bolt hole, replace the bolt and torque converter clutch.
  2. All of the bolts must be the same length.
  3. Washers must be used with bolts.
INSPECT DRIVE PLATE
1. Check the drive plate for damage.
  
  Fig 5: Identifying Torque Converter Clutch Bolt Correct And Incorrect Position
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Set up a dial indicator and measure the runout of the 6 portions around the torque converter fitting surfaces.
  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.
  
  Fig 6: Measuring Torque Converter Fitting Surfaces
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002