AA80E Automatic Transmission

AA80E AUTOMATIC TRANSMISSION: TORQUE CONVERTER AND DRIVE PLATE: INSPECTION

1. INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY
(a) Inspect the one-way clutch.





(1) Set SST so that it fits into the notch of the converter hub and the notch of the outer race of the one-way clutch.
SST: 09350-32014
09351-32010
09351-32020





(2) Stand the torque converter up and turn SST.
SST: 09350-32014
09351-32010
09351-32020
Check that it rotates smoothly when turned clockwise and locks up when turned counterclockwise.
If necessary, clean the converter and check the one-way clutch.
Replace the converter if the one-way clutch still does not operate as specified.






(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.
2. INSPECT RUNOUT OF DRIVE PLATE & RING GEAR SUB-ASSEMBLY






(a) 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.