Torque Converter Clutch And Drive Plate: Inspection

INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY
1. Inspect the one-way clutch.
  1. Install SST in the inner race of the one-way clutch.
    SST 09350-32014 (09351 -32020)
    
    Fig 1: Installing SST In Inner Race Of One-Way Clutch
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Press on the serrations of the starter with a finger and rotate it.
    Check if it rotates smoothly when turned clockwise and locks when turned counterclockwise.
    
    If the results are not as specified, clean the converter and recheck the one-way clutch. If the results still are not as specified, replace the converter.
    
    Fig 2: Checking Condition Of Torque Converter Clutch Assembly
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Determine the condition of the torque converter clutch.
  1. Check that the following conditions are met:
    - During the stall test or when the shift lever is on N, metallic sounds are not emitted from the torque converter clutch.
    - The one-way clutch turns in one direction and locks in the other direction.
    - The amount of powder in the ATF is not greater than the sample shown in the illustration.
    If the results are not as specified, replace the torque converter clutch assembly.
    
    HINT:
    
    The sample illustration shows approximately 0.25 liters (0.26 US qts, 0.22 lmp. qts) of the ATF taken from a 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, stir the ATF in the torque converter clutch thoroughly and drain the ATF with the torque converter facing up.
    
    Fig 3: Identifying Allowable Amount Of Powder In ATF
    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 replaced, 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 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).
    
    Fig 4: Checking Oil Cooler And Oil Pipe Line
    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 bolt 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 should be the same length.
  3. Make sure no spring washers are missing.
    
    Fig 5: Checking Bolts Installation Position
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT RUNOUT OF DRIVE PLATE AND RING GEAR
1. Set up a dial indicator and measure the drive plate runout.
  Maximum runout: 0.20 mm (0.0079 in.)
  
  If the runout is greater than the maximum or if the ring gear is damaged, replace the drive plate. If installing a new drive plate, note the orientation of the spacers and tighten the bolts.
  
  Torque: 178 N*m (1,820 kgf*cm, 132 ft.*lbf)
  
  Fig 6: Measuring Drive Plate Runout
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT RUNOUT OF TORQUE CONVERTER CLUTCH ASSEMBLY
1. Temporarily mount the torque converter clutch to the drive plate. Set up a dial indicator.
  Maximum runout: 0.30 mm (0.0118 in.)
  
  If the runout is greater than the maximum, try to correct it by changing the installation direction of the torque converter clutch.
  
  If the runout cannot be corrected, replace the torque converter clutch.
  
  HINT:
  
  Mark the position of the torque converter clutch so that it can be installed correctly later.
  
  Fig 7: Inspecting Runout Of Torque Converter Clutch Assembly
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Remove the torque converter clutch.