Torque Converter And Drive Plate: Inspection

INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY

Fig 1: Pressing On Serrations Of Starter
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Inspect the 1-way clutch.
  1. Press on the serrations of the starter with a finger and rotate it. Check that it rotates smoothly when turned clockwise and locks up when turned counterclockwise.
    If necessary, clean the converter and recheck the 1-way clutch.
    
    Replace the converter if the 1-way clutch still fails the check.
2. Determine the condition of the torque converter clutch.
  
  Fig 2: Identifying Amount Of Powder In ATF
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  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 1-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.
    HINT:
    
    The sample illustration shows approximately 0.25 liters (0.26 US qts, 0.22 Imp. 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, completely stir the ATF in the torque converter clutch and drain the ATF with the torque converter facing upward.
INSPECT RUNOUT OF DRIVE PLATE & RING GEAR SUB-ASSEMBLY

Fig 3: 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 (0.0079 in.)
  
  If the runout is not within the specification or if the ring gear is damaged, replace the drive plate.