The clutch is a diaphragm-spring clutch of a dry single
disc type. The diaphragm spring is of a tapering-finger
type, which is a solid ring in the outer diameter part, with
a series of tapered fingers pointing inward.
The disc, carrying torsional coil springs, is positioned on
the transmission input shaft with an involute spline fit.
The clutch cover is secured to the flywheel, and carries
the diaphragm spring in such a way that the peripheral
edge part of the spring pushes on the pressure plate
against the flywheel (with the disc in between), when the
clutch release bearing (incorporated in clutch operating
cylinder) is held back. This is the engaged condition of
the clutch.
Depressing the clutch pedal causes the release bearing
(incorporated in clutch operating cylinder) to advance
and pushes on the tips of the tapered fingers of the
diaphragm spring. When this happens, the diaphragm
spring pulls the pressure plate away from the flywheel,
thereby interrupting the flow of drive from flywheel
through clutch disc to transmission input shaft.
Clutch fluid is supplied from brake fluid reservoir.
Clutch fluid level can be checked by brake fluid level of
brake fluid reservoir.

1. Crankshaft

7. Release bearing

2. Flywheel

8. Input shaft bearing

3. Clutch disc

9. Input shaft

4. Pressure plate

10. Operating cylinder

5. Clutch cover

11. Clutch housing

6. Diaphragm spring

I5JB0A530001-01

5C-2 Clutch:

Component Location

Clutch Fluid Pipe and Hose Location

S5JB0A5303001

[A]

I5JB0A530002-03

[A]: Right-hand steering vehicle

3. Clutch fluid hose

6. Brake master cylinder reservoir

1. Clutch master cylinder

4. Clutch operating cylinder assembly

7. Clutch fluid pipe joint

2. Clutch fluid pipe

5. Clutch reservoir hose

Clutch: 5C-3

Diagnostic Information and Procedures

Clutch (Hydraulic Type) Symptom Diagnosis

S5JB0A5304001

Condition

Possible cause

Correction / Reference Item

Slipping

Improper clutch pedal free travel

Bleed air or replace master cylinder.

Worn or oily clutch disc facing

Replace disc.

Warped disc, pressure plate or flywheel
surface

Replace disc, clutch cover or flywheel.

Weakened diaphragm spring

Replace clutch cover.

Master cylinder piston or seal cup not
returning

Repair master cylinder.

Dragging clutch

Improper clutch pedal free travel

Bleed air or replace master cylinder.

Weakened diaphragm spring, or worn
spring tip

Replace clutch cover.

Rusted input shaft splines

Lubricate.

Damaged or worn splines of
transmission input shaft

Replace input shaft.

Excessively wobbly clutch disc

Replace disc.

Clutch facings broken or dirty with oil

Replace disc.

Fluid leakage

Repair or replace.

Clutch vibration

Glazed (glass-like) clutch facings

Repair or replace disc.

Clutch facings dirty with oil

Replace disc.

Release bearing slides unsmoothly

Replace clutch operating cylinder assembly.

Wobbly clutch disc, or poor facing
contact

Replace disc.

Weakened torsion springs in clutch disc Replace disc.
Clutch disc rivets loose

Replace disc.

Distorted pressure plate or flywheel
surface

Replace clutch cover or flywheel.

Weakened or loosened engine mounting
bolt or nut

Retighten or replace mounting.

Noisy clutch

Worn or broken release bearing

Replace clutch operating cylinder assembly.

Input shaft front bearing worn down

Replace input shaft bearing.

Excessive rattle of clutch disc hub

Replace disc.

Cracked clutch disc

Replace disc.

Pressure plate and diaphragm spring
rattling

Replace clutch cover.

Grabbing clutch

Clutch disc facings soaked with oil

Replace disc.

Clutch disc facings excessively worn

Replace disc.

Rivet heads showing out of facing

Replace disc.

Weakened torsion springs

Replace disc.

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