Flex Plate: Testing and Inspection

A750F AUTOMATIC TRANSMISSION: TORQUE CONVERTER CLUTCH AND DRIVE PLATE: INSPECTION

INSPECTION

1. INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY
(a) Inspect the 1-way clutch.
(1) Install SST in the inner race of the 1-way clutch.
SST: 09350-32014
09351-32020




(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 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 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.

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 Imp. qts) of the 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 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.





2. INSPECT RUNOUT OF DRIVE PLATE AND RING GEAR
(a) Set up a dial indicator and measure the drive plate runout.
Maximum runout:
0.20 mm (0.00787 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 install the bolts.
Torque: 178 Nm (1,820 kgf-cm, 132 ft-lbf)





3. INSPECT RUNOUT OF TORQUE CONVERTER CLUTCH ASSEMBLY
(a) 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.

(b) Remove the torque converter clutch.