Iveco Daily Euro 4. Manual — part 81
4
CLUTCH
D
AILY
E
URO
4
Main operating faults of the clutch are:
1. - Noise when the clutch pedal is pressed;
2. - Noise when the pedal is released;
3. - Clutch jerks;
YES
NO
Collar bearing excessively worn, damaged or not
properly lubricated.
Replace the collar bearing.
Excessive play between the clutch engagement grooves
on the shaft and the relevant seat on the hub of the
driven disk.
Replace the shaft and, if necessary, the driven disk also.
Driven disk springs are broken or weakened.
Replace the driven disk.
Clutch engagement shaft worn.
Replace the shaft and, if necessary, the driven disk also.
Collar bearing has excessive play in the joint.
Replace the collar bearing.
4. - The clutch does not release;
5. - The clutch slips;
6. - Abnormal wear of driven disk seals.
YES
1
YES
NO
YES
NO
YES
2
NOISE WHEN THE PEDAL
IS RELEASED
NOISE WHEN CLUTCH PEDAL
IS PRESSED
CLUTCH
5
D
AILY
E
URO
YES
NO
Oil or grease on the engine flywheel, or on the seals of
the driven disk.
Replace the oil or grease, clean the flywheel, and
replace the driven disk.
Thrust pad deformed.
Replace the clutch.
Friction seals worn due to off centring of the driven disk.
Replace the driven disk.
Clutch diaphragm spring weak or broken.
Replace the driven disk.
Oil or grease on the seals of the driven disk.
Remove the oil or grease; clean the flywheel and
replace the driven disk.
Grooves on the clutch engagement shaft are worn and
impede the movement of the driven disk.
Replace the shaft and, if necessary, the driven disk.
YES
NO
3
YES
NO
YES
YES
NO
YES
4
CLUTCH JERKS
THE CLUTCH DOES NOT RELEASE
Driven disk springs broken or yielded.
Replace the driven disk.
NO
YES
(Continue)
6
CLUTCH
D
AILY
E
URO
4
NO
Driven disk seals worn or burnt.
Replace the driven disk.
Clutch diaphragm springs weak or broken.
Replace the clutch.
Oil or grease on the seals of the driven disk.
Remove the oil or grease, and replace the driven disk.
YES
NO
5
YES
YES
NO
YES
6
THE CLUTCH SLIPS
ABNORMAL WEAR OF DRIVEN
DISK SEALS
The driver keeps the clutch pedal pressed while driving.
The driver must stop this habit and use the clutch pedal
only when necessary.
Clutch diaphragm spring blades weakened or broken.
Replace the clutch.
YES
NO
YES
Clutch pedal height not adjusted (only mechanical
control).
The driver must stop this habit and use the clutch pedal
only when necessary.
Adjust the height of the clutch pedal.
Clutch release hydraulic control not efficient.
Replace the hydraulic control.
CLUTCH
7
D
AILY
E
URO
CHARACTERISTICS AND DATA
Models
29 L 10 - 29 L 12 - 35 S 10 - 35 S 12 - 35 C 10 - 35 C 12 - 40 C 10 - 40 C 12
(except for the vehicles equipped with 6 S 400 A O.D. gearbox unit)
9 ”
1
/
4
CLUTCH
BORG & BECK
Type
Dry single disk
Clutch mechanism
“Pull” with diaphragm spring
Driven disk
With friction seals
Driven disk hub
with single elastic coupling
External Ø seal
mm
235
0
− 1
Internal
∅ seal
mm
160
+ 1, 5
Disk thickness (new)
mm
7,7
± 0,3
Under load
N
6850
Minimum thickness due to wear
mm
1,25
Max. off centring driven
disk
mm
~ 0,2
Minimum load on
thrust plate
N
6850
Max. release load at 9
Max. release load at 9
mm. release height
N
1400
Maximum rise thrust pad
Maximum rise thrust pad
at 9 mm. release height
mm
1,6
Disengagement stroke
mm
9
+ 1
Max. depression stroke
mm
9,5
Disengagement control
hydraulic
Lubricant
-
Values refer to new clutch
NOTE
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