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Toyota Torque Converter Clutch and Drive Plate Inspection Guide
A technical guide for inspecting the torque converter clutch and drive plate on Toyota A340E and A340F automatic transmissions, including runout measurement specifications and one-way clutch testing procedures.
Table of contents
Quick guide from the manual
This document provides technical procedures for inspecting the torque converter clutch and drive plate components in Toyota A340E and A340F automatic transmissions. It covers the inspection of the one-way clutch, measurement of drive plate runout, and verification of torque converter clutch sleeve runout.
Inspect one-way clutch
To inspect the one-way clutch, use the specified Special Service Tool (SST 09350-30020):
- Install the SST into the inner race of the one-way clutch.
- Position the SST so it fits into the notch of the converter hub and the outer race of the one-way clutch.
- With the torque converter clutch standing on its side, verify that the clutch locks when turned counterclockwise and rotates freely and smoothly clockwise.
- If the clutch fails this test, clean it and retest. If it still fails, replace the converter clutch.
Measure drive plate runout and inspect ring gear
Use a dial indicator to measure the drive plate runout. The maximum allowable runout is 0.20 mm (0.0079 in.). If the measurement exceeds this limit, the drive plate must be replaced. When installing a new drive plate, ensure correct orientation of spacers and tighten bolts to the following specifications:
- 3RZ-FE engine: 74 N·m (750 kgf·cm, 54 ft·lbf)
- 5VZ-FE engine: 83 N·m (850 kgf·cm, 61 ft·lbf)
Measure torque converter clutch sleeve runout
Temporarily mount the torque converter clutch to the drive plate and use a dial indicator to measure runout. The maximum allowable runout is 0.30 mm (0.0118 in.). If the runout is out of specification, attempt to correct it by reorienting the installation of the torque converter clutch. It is recommended to mark the position of the clutch to ensure correct installation.
Practical help
Common problems
One-way clutch does not lock counterclockwise or rotate smoothly clockwise.
Clean the converter clutch and retest. If the issue persists, replace the converter clutch.
Drive plate runout exceeds 0.20 mm.
Replace the drive plate.
Torque converter clutch sleeve runout exceeds 0.30 mm.
Try to correct the runout by reorienting the installation of the torque converter clutch.
Before use
- Ensure you have the required Special Service Tool (SST 09350-30020).
- Have a dial indicator ready for runout measurements.
- Verify the engine type (3RZ-FE or 5VZ-FE) for correct bolt torque specifications.
- Mark the position of the torque converter clutch before removal to ensure correct reinstallation.
Specs in practice
- Maximum drive plate runout
- 0.20 mm (0.0079 in.) - limit for flatness/wobble.
- Maximum sleeve runout
- 0.30 mm (0.0118 in.) - limit for rotational alignment.
- 3RZ-FE bolt torque
- 74 N·m (54 ft·lbf) for drive plate installation.
- 5VZ-FE bolt torque
- 83 N·m (61 ft·lbf) for drive plate installation.
Images and diagrams
- The diagrams illustrate the use of the SST tool to lock the inner and outer races of the one-way clutch.
- Visual guides show the direction of rotation (clockwise/counterclockwise) for testing the clutch lock mechanism.
- Diagrams indicate where to place the dial indicator tip against the drive plate and sleeve to measure runout.
Model compatibility
- Procedures apply specifically to Toyota A340E and A340F automatic transmissions.
- Torque specifications differ based on engine model (3RZ-FE vs 5VZ-FE).
Manual page author
David Miller
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