Flex Plate: Testing and Inspection

AA80E AUTOMATIC TRANSMISSION / TRANSAXLE: TORQUE CONVERTER CLUTCH AND DRIVE PLATE: INSPECTION

1. INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY

(a) Inspect the one-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 one-way clutch.

Replace the converter if the one-way clutch still fails the check.

(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 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.

(c) 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.

(d) Prevent deformation of the torque converter clutch.





(1) When there is any damage to the end of the bolt for the torque converter clutch and to the bottom of the bolt hole, replace the bolt and the torque converter clutch.

(2) All of the bolts have to be the same length.

2. INSPECT RUNOUT OF DRIVE PLATE

(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 fitting surfaces.





Maximum runout:

0.30 mm (0.0118 in.)

If the runout is greater than the maximum or if the drive plate is damaged, replace the drive plate.

If installing a new drive plate, note the orientation of the spacers and tighten the bolts Installation.