Torque Converter And Drive Plate: Inspection

INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY
1. Inspect the one-way clutch.
  1. Install SST so that it fits in a notch of the converter hub and a notch of the outer race of the one-way clutch.
    SST 09350-30020 (09351-32020)
    
    Fig 1: Installing SST
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Press on the serrations of the stator with a finger and rotate it.
    Clean the converter and retest the one-way clutch.
    
    When the one-way clutch is turned clockwise, it rotates freely and when turned counterclockwise, it locks.
  Fig 2: Inspecting One-Way Clutch
  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 does not satisfy the standard conditions, replace the torque converter clutch assembly.
    Malfunction item:
    
    A metallic sound is heard from the torque converter clutch during stall test or when the shift lever is in the N position.
    
    The one-way clutch is free locked in both directions.
    
    Fine powder exceeding the sample limit is identified in ATF (see the sample).
    
    HINT:
    
    The sample shows the auto fluid of approx. 0.25 liters (0.26 US qts, 0.22 Imp. qts) of ATF that is 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 the ATF with the torque converter facing up.
Fig 3: Identifying Minimum Amount Of Powder In ATF
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT RUNOUT OF DRIVE PLATE and RING GEAR SUB-ASSEMBLY
1. Set up a dial indicator and measure the drive plate runout.
  Maximum runout:
  
  0.20 mm (0.0079 in.)
  
  If runout is not within specification or if the ring gear is damaged, replace the drive plate.
Fig 4: Measuring Drive Plate Runout
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002