Torque Converter: Testing and Inspection

U241E AUTOMATIC TRANSAXLE: TORQUE CONVERTER AND DRIVE PLATE: INSPECTION

1. INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY





(a) Inspect the one-way clutch.

(1) Set SST into the inner race of the one-way clutch.

SST : 09350-32014

09351-32010

(2) Install SST so that it fits in the notch of the torque converter hub and the outer race of one-way clutch.

SST : 09350-32014

09351-32020

(3) Stand the torque converter clutch up and turn the SST.





Standard:

If the one-way clutch is turned clockwise, if rotates freely and if turned counterclockwise, it locks.

(b) Determine the condition of the torque converter clutch.





(1) If the inspection result of the torque converter clutch assembly satisfies the following conditions, replace the torque converter clutch assembly.

Malfunction:

A metallic sound is emitted from the torque converter clutch during the stall test or when the shift lever is moved to the N position.

The one-way clutch is free or looked in both directions.

The amount of powder in the ATF is greater than the sample shown in the illustration (see the sample).

HINT
The sample illustration shows approximately 0.25 liters (0.26 US qts, 0.22 Imp. qts) of the ATF that is taken out from the removed torque converter clutch.

(c) Replace the ATF in the torque converter clutch.

(1) If the ATF is discolored and/or has foul odor, 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 pipe line.

* Apply compressed air of 196 kPa (2 kgf/cm2, 28 psi) into the inlet hose.

* If a large amount of powder is found in the ATF, add new ATF using a bucket pump and clean the oil cooler and oil pipe line again.

(2) If the ATF is cloudy, inspect the oil cooler (radiator).

(e) Prevent deformation of the torque converter clutch and damage to the oil pump gear.





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

(2) All of the bolts should be the same length.

(3) Bolts with washers must be used.

2. INSPECT 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 clutch fitting surfaces.

Maximum runout:

0.30 mm (0.0118 in.)

(c) If the runout is not within the specification or the drive plate is damaged, replace the drive plate Installation.