Torque Converter: Testing and Inspection

U250E AUTOMATIC TRANSMISSION / TRANSAXLE: TORQUE CONVERTER CLUTCH AND DRIVE PLATE: INSPECTION

INSPECTION

1. INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY





(a) Inspect the one-way clutch.
(1) Install SST onto the inner race of the one-way clutch.
SST: 09350-32014
09351-32010
(2) Set SST so that it fits in the notch of the converter hub and in the outer race of the one-way clutch.
SST: 09350-32014
09351-32020
(3) With the torque converter standing on its side, check that the clutch locks when SST is turned counterclockwise and rotates freely and smoothly when turned clockwise. If the results are not as specified, clean the converter and recheck the one-way clutch. If the results still are not as specified, replace the converter.





(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 one-way clutch turns clockwise and locks when turned counterclockwise.
- 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, completely stir the ATF in the torque converter clutch and drain it.





(d) Clean and check the oil cooler and oil pipe line.
(1) If the torque converter clutch is inspected or the ATF is replaced, clean the oil cooler and oil lines.
HINT:
- Spray compressed air of 196 kPa (2 kgf/cm2, 28 psi) into inlet hose.
- If there is a large amount of fine powder in the ATF, add new ATF using a bucket pump and clean it again.
(2) If the ATF is cloudy, inspect the oil cooler (radiator).





(e) Avoid damaging the torque converter clutch and the oil pump gear.
(1) If 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 must be the same length.
(3) Bolts with washers must be used.
2. INSPECT DRIVE PLATE & RING GEAR SUB-ASSEMBLY
(a) Check the drive plate for damage.





(b) Set up a dial indicator and measure the run out of the 6 portions around the torque converter fitting surface.
Maximum runout:
0.30 mm (0.0118 in.)
If the runout is not within the specification or the drive plate is damaged, replace the drive plate.