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) 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 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.

If the results are not as specified, replace the torque converter clutch assembly.

HINT
The sample illustration shows approximately 0.025 liters (0.026 US qts, 0.022 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, stir the ATF in the torque converter clutch thoroughly and then drain the ATF with the torque converter facing upward.

(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) If any marks or damage are found on the end of the torque converter clutch bolts or on the bottom of the bolt hole, replace the bolt and torque converter clutch.

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

(3) Make sure no spring washers are missing.

2. INSPECT DRIVE PLATE AND RING GEAR SUB-ASSEMBLY

(a) Check the drive plate and ring gear for damage.

(b) Set up a dial indicator and measure the runout of the 6 portions around the torque converter contact surfaces.





Maximum runout:

0.30 mm (0.0118 in.)

* If the runout is not within the specification or the drive plate and ring gear is damaged, replace the drive plate and ring gear.

* Removal: Removal

* Installation: Installation