Toyota Tundra Service Manual: Torque Converter Clutch And Drive Plate





(a) Inspect the 1-way clutch.

(1) Install SST to the inner race of the 1-way clutch.

SST: 09350-32014


(2) Press on the serrations of the stator with a finger and rotate it.

Check that the stator rotates smoothly when turned clockwise and locks when turned counterclockwise.

If the results are not as specified, clean the converter and recheck the 1-way clutch. If the results still are not as specified, replace the torque converter clutch assembly.

(b) 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 in 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 more than the sample shown in the illustration.

If the results are not as specified, replace the torque converter clutch assembly.


The sample illustration shows approximately 0.25 liters (0.26 US qts, 0.22 Imp. qts) of ATF taken from a removed torque converter clutch.

(c) 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 upward.

(d) 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 a bolt for the torque converter clutch and on the bottom of the bolt hole, replace the bolt and torque converter clutch.

(2) Make sure all of the bolts are the same length.

(3) Make sure no spring washers are missing.


(a) Check the drive plate for damage.

(b) Set up a dial indicator and measure the runout of the 6 portions around the torque converter clutch contact surfaces.

Maximum runout:

0.30 mm (0.0118 in.)

If the runout is more than the maximum, or the drive plate is damaged, replace the drive plate (See page ).

    Speed Sensor

    Transmission Control Cable(for Column Shift Type)

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