Valeoscope Commercial Vehicles Clutch 2020

Table of Contents

1. Valeo clutch and actuation for heavy duty 1.1 Valeo clutch for heavy duty

3.3.3 Breakage of the fork contact area

46

3 Example of clutch Pull type 430 with fixed release bearing 4 Example of clutch Pull type 430

63

11 Dust or pieces of facing between the cover and the pressure plate 12 Breakage of the sleeve on the fork

32

3.3.4 Judder caused by grease

46

63

33

with snap on/off release bearing

contact area 13 Judder caused by grease 14 Disconnected pre-damper 15 Borken retainer plates

6 6 7 8

3.3.5 Seized tube-guide/ seized sleeve

46

33 34 34

1.2 Why Valeo clutch kit? 1.3 Clutch general 1.4 Clutch disc 1.5 Clutch cover 1.6 Release bearing 1.7 Actuation system

4.3 Recommendations for

64

3.3.6 Seized fork on ball pivot /axis

46

Concentric Slave Cylinder

3.4 Noise and vibration

47

4.3.1 Prior to Fitting the CSC

64

3.1.4 Gearbox with synchromesh

35

3.4.1 Reasons due to the clutch

47 47 47 48 48 49 49 49 49 49

13 16 17

4.3.2 Fitting tips & specific warnings

65

3.1.5 Robotised Gearbox hard gear shifting 36

1 Damaged cover caused by friction

for hydraulic systems

2 Seized ball bearing 3 Broken damper spring 4 Worn or broken clutch disc

3.2 Clutch slippage or lack of

37

5. New and remanufactured parts

torque capacity 3.2.1 External factors

2. Preventive maintenance for vehicles 2.1 Verification in cold conditions

5 Broken facings, broken cushion pad

37 38 38

6. Glossary Flywheel

6 Disconnected pre-damper

1 Blue-stained pressure plate

7 Friction marks on the retainer plates

2 External reasons due to the clutch linkage:

72

21

8 Broken retainer plates

seized fork on ball pivot/axis

Clutch cover

72

9 Broken disc

2.2 Verification while driving 21 2.3 Verifications in warm conditions 22

3.2.2 Reasons due to the clutch

39 39

Clutch disc

72

3.4.2 Gearbox with synchromesh

49

1 Over-heated spots on the pressure plate surface (creeping) 2 Grooves on pressure plate friction surface made by facing rivets 3 Cracks on the pressure plate

Bearing

73

3.4.3 Facing bonded on steel-back

49

40

Fork

73

3. Diagnosis

Clutch housing

73

4. Preventative maintenance 4.1 Examination and refit of

3.1 Hard gear shifting 23 3.1.1 External reasons due to the gearbox 23 or to the gearbox linkage (manual gearbox)

40 41 41

Tube-guide

73

4 Deformed pressure plate

51

Clutch linkage

73

5 Rubbing of the rivets after total wear od the facings 6 Stripped yarn after destruction

the clutch environment

4.1.1 Engine

51

42

3.1.2 External reasons due to the

25

of the facing binder

4.1.2 Gearbox

53

clutch linkage

7 Burst facing

42 43 43 44 44 44 44

8 Broken pressure plate

3.1.3 Reasons due to the clutch

26 26 27 27 28 28 30 30 31 31 32

4.2 Recommendations for a correct 54 assembly of the clutch kit 4.2.1 Clutch disc 54

9 Seized tube-guide/seized sleeve 10 Friction marks on the retainer plates

1 Deformed locking ring

2 Worn or broken system attachments

11 Broken disc

3 Worn diaphragm fingers

12 Diaphragm radial breakage

4 Deformed straps

4.2.2 Cover assembly

55

13 Dust or pieces of the facing between

5 Worn facing with cavities and

1 Cover assembly tips 55 2 Cover assembly centre with shipping clips 56 3 Cover assembly centre without shipping clips 57 58 1 Cover assembly with fixed release bearing 58 2 Cover assembly with snap on/off 61 release bearing

the cover and the pressure plate

shiny surfaces 6 Partially burst facing

3.3 Lack of smoothness/progressivity 45 3.3.1 Judder caused by shiny spots on the facing 45

7 Dirty splines/oxidation on splines

8 Worn and seized splines 9 Damaged pilot bearing 10 Diaphragm radial breakage

4.2.3 Release bearing

3.3.2 Deterioration of the cover assembly centring

46

4

5