Automatic Transaxle Assembly: Inspection: Inspection

INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY

Fig 1: Installing SST Into Inner Race Of One-Way Clutch
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Inspect the one-way clutch.
  1. Install SST into the inner race of the one-way clutch.
    - SST: 09350-32014
      - 09351-32010
  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
      - 09351-32020
  3. With the torque converter clutch standing on its side, check that the one-way clutch locks when it is turned counterclockwise, and rotates smoothly when turned clockwise.
    
    Fig 2: Checking One-Way Clutch Locks
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    If necessary, clean the converter and retest the one-way clutch.
    
    Replace the converter if the one-way clutch still fails the test.
2. Determine the condition of the torque converter clutch.
  
  Fig 3: Identifying Fine Powder
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. If the inspection result of the torque converter clutch assembly meets the following criteria, replace the torque converter clutch.
    Malfunction
    
    Any metallic sound is heard from the torque converter clutch during the stall test or when the shift lever is in the neutral position. The one-way clutch is free or locked in both directions.
    
    Fine powder exceeding the sample limit is identified in the ATF. (See Fig 3.)
    
    HINT:
    
    The sample shows ATF of approximately. 0.25 liters (0.26 US qts, 0.22 Imp. qts) that has been taken out from the removed torque converter clutch.
3. 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 face for installation facing up.
4. Clean and check the oil cooler and oil pipe line.
  
  Fig 4: Checking Oil Cooler And Oil Pipe Line
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. If the torque converter clutch is inspected or the ATF is changed, clean the oil cooler and oil pipe line.
    NOTE:
    Spray compressed air of 196 kPa (2 kgf/cm² , 28 psi) from the inlet hose.
    
    If plenty 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).
5. Prevent deformation of the torque converter clutch and damage to the oil pump gear.
  
  Fig 5: Identifying Damage On End Of Bolt
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. When there is any damage on the end of the bolt for the torque converter clutch and on the bottom of the bolt hole, replace the bolt and the torque converter clutch.
  2. All of the bolts should be the same length.
  3. Do not lose the spring washer.
REMOVE DRIVE PLATE & RING GEAR SUB-ASSEMBLY

Fig 6: Measuring Drive Plate Runout
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Set up a dial indicator and measure the drive plate runout.
  Maximum runout
  
  0.20 mm
2. Check for damage of the ring gear.
  If the runout is greater than the maximum or the ring gear is damaged, replace the drive plate.