Content .. 887 888 889 890 ..

Mitsubishi Eclipse. Manual - part 889

CLUTCH DIAGNOSIS

TSB Revision

CLUTCH

21A-3

SYMPTOM CHART

M1211003600090

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 1: Clutch Slips

DIAGNOSIS

Step 1. Check insufficient clutch pedal play.
Refer to

P.21A-6

Q: Does the clutch pedal play meet the standard

value?
YES :

Go to Step 2.

NO :

Adjust the clutch pedal play. Then go to
Step 7.

Step 2. Check the hydraulic system for clogging.

Q: Is the hydraulic system clogged?

YES :

Repair or replace the hydraulic system.

Then go to Step 7.

NO :

Go to Step 3.

Step 3. Check the clutch release fork for
catching.

Q: Is the clutch release fork stuck?

YES :

Repair or replace the clutch release fork.

Then go to Step 7.

NO :

Go to Step 4.

Step 4. Check the clutch disc facing for
excessive wear.
Refer to GROUP 21B, Clutch

P.21B-6

Q: Is the clutch disc facing worn excessively?

YES :

Replace the clutch disc. Then go to Step 7.

NO :

Go to Step 5.

Step 5. Check the clutch disc facing for
hardening and adhesion of oil.
Refer to GROUP 21B, Clutch

P.21B-6

Q: Is the clutch disc facing hardened or contaminated

with oil?
YES :

Replace the clutch disc. Then go to Step 7.

NO :

Go to Step 6.

Step 6. Check the diaphragm spring for
weakness and damage.
Refer to GROUP 21B, Clutch

P.21B-6

Q: Is the diaphragm spring weaken or damaged?

YES :

Replace the clutch cover assembly. Then

go to Step 7.

NO :

Go to Step 7.

Step 7. Check the symptom.

Q: Is the symptom reproduced?

YES :

Return to Step 1.

NO :

This diagnosis is complete.

SYMPTOM

INSPECTION
PROCEDURE

REFERENCE PAGE

Clutch slips

P.21A-3

Gear shift malfunction

P.21A-4

Clutch noise

P.21A-4

Clutch pedal feels "heavy"

P.21A-5

When the clutch is engaged, abnormal vibration occurs.

P.21A-6

CLUTCH DIAGNOSIS

TSB Revision

CLUTCH

21A-4

INSPECTION PROCEDURE 2: Gear Shift Malfunction

DIAGNOSIS

Step 1. Check the excessive clutch pedal play.
Refer to

P.21A-6

Q: Does the clutch pedal play meet the standard

value?
YES :

Go to Step 2.

NO :

Adjust the clutch pedal play. Then go to
Step 9.

Step 2. Check the hydraulic system for leakage,
air mix and clogging.
Refer to

P.21A-11

Q: Is there a leakage, air mix or clogging on the

hydraulic system?
YES :

Repair or replace the hydraulic system.

Then go to Step 9.

NO :

Go to Step 3.

Step 3. Check the clutch disc for distortion and
excessive oscillation.
Refer to GROUP 21B, Clutch

P.21B-6

Q: Is the clutch disc distorted or oscillated?

YES :

Replace the clutch disc. Then go to Step 9.

NO :

Go to Step 4.

Step 4. Check the clutch disc spline for wear and
corrosion.
Refer to GROUP 21B, Clutch

P.21B-6

Q: Is the clutch disc spline worn or corroded?

YES :

Replace the clutch disc. Then go to Step 9.

NO :

Go to Step 5.

Step 5. Check the clutch disc facing for peeling.

Q: Is clutch disc facing peeled?

YES :

Replace the clutch disc. Then go to Step 9.

NO :

Go to Step 6.

Step 6. Check the clutch cover assembly for
wear.
Refer to GROUP 21B, Clutch

P.21B-6

Q: Is the clutch cover assembly worn?

YES :

Replace the clutch cover assembly. Then

go to Step 9.

NO :

Go to Step 7.

Step 7. Check the pressure plate and the flywheel
for damage.

Q: Is the pressure plate or the flywheel damaged?

YES :

Replace the clutch cover assembly or the

flywheel. Then go to Step 9.

NO :

Go to Step 8.

Step 8. Check the clutch release bearing for wear.
Refer to GROUP 21B, Clutch

P.21B-6

Q: Is the clutch release bearing worn?

YES :

Replace the clutch release bearing. Then

go to Step 9.

NO :

Go to Step 9.

Step 9. Check the symptom.

Q: Is the symptom reproduced?

YES :

Return to Step 1.

NO :

This diagnosis is complete.

INSPECTION PROCEDURE 3: Clutch Noise

DIAGNOSIS

Step 1. Check insufficient clutch pedal play.
Refer to

P.21A-6

Q: Does the clutch pedal play meet the standard

value?
YES :

Go to Step 2.

NO :

Adjust the clutch pedal play. Then go to
Step 7.

Step 2. Check the clutch release bearing for wear.
Refer to GROUP 21B, Clutch

P.21B-6

Q: Is the clutch release bearing worn?

YES :

Replace the clutch release bearing. Then

go to Step 7.

NO :

Go to Step 3.

CLUTCH DIAGNOSIS

TSB Revision

CLUTCH

21A-5

Step 3. Check the bearing sleeve sliding surface
for insufficient lubrication.

Q: Is the lubrication of the bearing sleeve sliding

surface sufficient?
YES :

Go to Step 4.

NO :

Repair the bearing sleeve sliding surface.
Then go to Step 7.

Step 4. Check the clutch cover assembly for
improper installation.
Refer to GROUP 21B, Clutch

P.21B-2

Q: Is the clutch cover assembly installed properly?

YES :

Go to Step 5.

NO :

Install the clutch cover assembly properly.
Then go to Step 7.

Step 5. Check the clutch disc facing for
excessive wear.
Refer to GROUP 21B, Clutch

P.21B-6

Q: Is the clutch disc facing assembly worn

excessively?
YES :

Replace the clutch disc. Then go to Step 7.

NO :

Go to Step 6.

Step 6. Check the pilot bushing for damage.

Q: Is the pilot bushing damaged?

YES :

Replace the pilot bushing. Then go to Step

NO :

Go to Step 7.

Step 7. Check the symptom.

Q: Is the symptom reproduced?

YES :

Return to Step 1.

NO :

This diagnosis is complete.

INSPECTION PROCEDURE 4: Clutch Pedal Feels "Heavy"

DIAGNOSIS

Step 1. Check the clutch pedal clevis pin for
insufficient lubrication.

Q: Is the lubrication of the clutch pedal clevis pin

sufficient?
YES :

Go to Step 2.

NO :

Repair the clutch pedal. Then go to Step 4.

Step 2. Check the clutch disc spline for
insufficient lubrication.
Refer to GROUP 21B, Clutch

P.21B-6

Q: Is the lubrication of the clutch disc spline

sufficient?
YES :

Go to Step 3.

NO :

Replace the clutch disc. Then go to Step 4.

Step 3. Check the insufficient lubrication of
bearing sleeve sliding surface.

Q: Is the lubrication of the bearing sleeve sliding

surface sufficient?
YES :

Go to Step 4.

NO :

Repair the bearing sleeve sliding surface.
Then go to Step 4.

Step 4. Check the symptom.

Q: Is the symptom reproduced?

YES :

Return to Step 1.

NO :

This diagnosis is complete.

ON-VEHICLE SERVICE

TSB Revision

CLUTCH

21A-6

INSPECTION PROCEDURE 5: When the Clutch is Engaged, Abnormal Vibration Occurs.

DIAGNOSIS

Step 1. Check the engine and transaxle mounting
for loosening and damage.

Q: Is the engine and transaxle mounting loosened or

damaged?
YES :

Tighten or replace the engine and transaxle

mounting. Then go to Step 6.

NO :

Go to Step 2.

Step 2. Check the diaphragm spring for uneven
height.

Q: Is the diaphragm spring even height?

YES :

Go to Step 3.

NO :

Replace the clutch cover assembly. Then go
to Step 6.

Step 3. Check the pressure plate and flywheel for
damage.

Q: Is the pressure plate or flywheel damaged?

YES :

Repair the clutch cover assembly or

flywheel. Then go to Step 6.

NO :

Go to Step 4.

Step 4. Check the clutch disc facing for wear and
damage.
Refer to GROUP 21B, Clutch

P.21B-6

Q: Is the clutch disc facing worn or damaged?

YES :

Replace the clutch disc. Then go to Step 6.

NO :

Go to Step 5.

Step 5. Check for grease or oil on the clutch disc
facing.
Refer to GROUP 21B, Clutch

P.21B-6

Q: Is there grease or oil on the clutch disc facing?

YES :

If the clutch disc facing is contaminated with

grease or oil, check that greases is applied
to the clutch disc spline. (Refer to GROUP
21B, Clutch

P.21B-2

.) Then check the

clutch housing input shaft oil seal (Refer to
GROUP 22B, Clutch Housing

P.22B-56

and the crank shaft rear oil seal (2.4L
ENGINE: Refer to GROUP 11A, Crankshaft
Rear Oil Seal

P.11A-30

, 3.0L ENGINE:

Refer to GROUP 11C, Crankshaft Rear Oil
Seal

P.11C-35

.) for leakage, and replace

the oil seal(s). Replace the clutch disc. Then
go to Step 6.

NO :

Go to Step 6.

Step 6. Check the symptom.

Q: Is the symptom reproduced?

YES :

Return to Step 1.

NO :

This diagnosis is complete.

ON-VEHICLE SERVICE

CLUTCH PEDAL CHECK AND ADJUSTMENT

M1211000900111

1. Turn back the carpet etc. under the clutch pedal.
2. Measure the clutch pedal height. If the height is outside the

standard value, go to step 4.

Standard value (A): 175.3

− 178.3 mm (6.90 − 7.02

inches) [From the surface of melting sheet (Floor
board shield) to the face of pedal pad]

3. Measure the clutch pedal clevis pin play. If the play is

outside the standard value, go to Step 5.

Standard value (B): 1

− 3 mm (0.04 − 0.12 inch)

AC001133

CLUTCH PEDAL
HEIGHT

CLUTCH PEDAL
CLEVIS PIN PLAY

Content .. 887 888 889 890 ..