Clutch — description and testing [Toyota Camry XV20]

The clutch is dry, single-disc, diaphragm type, with hydraulic drive.

The hydraulic drive circuit includes the master and slave cylinders in series, through which the force from the pedal is transmitted to the fork and to the clutch release bearing. On cars with a V6 engine, a hydraulic accumulator is additionally provided.

It is recommended to perform the following preliminary checks to determine the condition of the clutch.

1. Check the fluid level, restore if necessary (if the tank is empty, add fluid and bleed the hydraulic drive).

2. To check the clutch, press the pedal with the engine idling and after a few seconds engage reverse gear. A grinding noise will indicate increased wear of the pressure or friction discs.

3. Check that the clutch is fully disengaged. To do this, with the engine running, press the clutch pedal so that the pedal is 13 mm from the floor. Shift from 1st to reverse gear several times. Difficulty shifting indicates wear of parts. Check the stroke of the working cylinder rod with the pedal fully depressed. If the stroke is small, check the fluid level.

4. Make sure the clutch fork has no play on the ball joint.

5. Check the pedal bushing wear at the top.