Toyota 4Runner: Torque Converter Clutch And Drive Plate

Toyota 4Runner Service Manual / Drivetrain / A750e Automatic Transmission / Transaxle / Torque Converter Clutch And Drive Plate

Inspection

INSPECTION

PROCEDURE

1. INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY

(a) Inspect the 1-way clutch.

(1) Install SST to the inner race of the 1-way clutch.

SST: 09350-32014

09351-32020

(2) Press on the serrations of the starter with a finger and rotate it.

Check if it rotates smoothly when turned clockwise and locks when turned counterclockwise.

Text in Illustration

	Free
	Lock

If the results are not as specified, clean the converter and recheck the 1-way clutch. If the results still are not as specified, replace the torque converter clutch assembly.

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

Text in Illustration

*1	Sample showing maximum allowable amount of powder in ATF

(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 more 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 ATF taken from a removed torque converter clutch.

(1) AT If the ATF is discolored and/or has a foul odor, stir the ATF in the torque converter clutch thoroughly and drain the ATF with the torque converter facing upward.

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

Text in Illustration

*a	Correct
*b	Incorrect
*c	Bottom is damaged

(1) When any marks due to interference are found on the end of the bolt for the torque converter clutch and 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

(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 contact surfaces.

Maximum runout:

0.30 mm (0.0118 in.)

Text in Illustration

*a	Measuring Point

If the runout is more than the maximum, or the drive plate is damaged, replace the drive plate (See page ).

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