Torque Converter: Testing and Inspection

A761E AUTOMATIC TRANSMISSION: TORQUE CONVERTER AND DRIVE PLATE: INSPECTION

INSPECTION

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




(1) Install SST so that it fits in a notch of the converter hub and a notch of the outer race of the 1-way clutch.
SST: 09350-30020
09351-32020




(2) Press on the serrations of the starter with a finger and rotate it.
Clean the converter and retest the 1-way clutch.
When the 1-way clutch is turned clockwise, it rotates freely and when turned counterclockwise, it locks.





(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.
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.