Iveco Daily Euro 4. Manual — part 80
312
F1C ENGINE
D
AILY
E
URO
4
CLUTCH
1
D
AILY
E
URO
SECTION 3
5052
Clutch
Page
DESCRIPTION
3
. . . . . . . . . . . . . . . . . . . . . . . . . .
DIAGNOSTICS
4
. . . . . . . . . . . . . . . . . . . . . . . . . .
CHARACTERISTICS AND DATA
7
. . . . . . . . . . .
TIGHTENING TORQUES
13
. . . . . . . . . . . . . . . . .
TOOLS
13
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CLUTCH REMOVAL AND REFITTING
14
. . . . . . .
-
Removal
14
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKS
14
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
-
Refitting
15
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
THRUST BEARING REMOVAL
AND REFITTING
15
. . . . . . . . . . . . . . . . . . . . . .
HYDRAULIC CLUTCH DRIVE
16
. . . . . . . . . . . . . .
HYDRAULIC CLUTCH DRIVE REMOVAL - REFITTING
18
-
Removal
18
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
-
Refitting
18
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PEDAL BOARD REMOVAL - REFITTING
20
. . . . .
-
Removal
20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
-
Refitting
20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PEDAL BOARD
21
. . . . . . . . . . . . . . . . . . . . . . . . .
CLUTCH WITH AUTOMATIC WEAR RECOVERY -
COMBINED WITH 6 AS’300 VD GEARBOX
22
-
Description
22
. . . . . . . . . . . . . . . . . . . . . . . . . . .
-
Operation
22
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOVAL AND REFITTING OF CLUTCH WITH
DEVICE RECOVERY COMBINED
24
. . . . . . . . .
-
Removal
24
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKS
24
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
-
Refitting
25
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
CLUTCH
D
AILY
E
URO
4
The clutch unit consists of the following:
- a driven disk - lined on both sides with friction seals and
fitted with a hub at the centre. Additionally, a hub spring
is provided to make it more elastic and soft;
- a thrust pad - fixed to the cover or body of the friction
clutch mechanism by means of plates that allow for axial
movement when the diaphragm spring is driven by the
collar bearing;
- a diaphragm spring made from a certain number of blades
arranged in a dial form;
- a collar bearing mounted on the diaphragm spring and
locked to the same by means of the split ring. With this
solution it is no longer necessary to adjust the clearance
between the collar bearing and diaphragm spring since
both the components are in contact. Moreover, the clutch
is released by traction of the collar bearing.
52233
Figure 1
The introduction of a diaphragm spring (or Belville washer) as
an elastic driving brings about important advantages, such as:
- smaller axial size and reduced sensibility of the centrifugal
force, due to the absence of the release lever;
- greater constructive accuracy due to the reduced number
of components;
- improved cooling capacity due to the reduced contact
surfaces between diaphragm and disk driver;
- less unbalance;
- easy maintenance thanks to:
1.
no regulation required for clearance;
2.
no further need to level-off the thrust pad.
Finally, it must be noted how the non-linear characteristics of
the diaphragm spring offer a reduced variation of the release
force as the control pedal gradually completes its travel and,
with a load on the disk driver not less than the rated value even
with worn seals.
VIEW OF CLUTCH ASSEMBLY
CLUTCH
3
D
AILY
E
URO
DESCRIPTION
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