2007 FORD FIESTA Workshop Manual

308-01 -1 Clutch 308-01 -1
SECTION 308-01 Clutch
VEHICLE APPLICATION:2006.0 Fiesta
CONTENTS PAGE
SPECIFICATIONS
Specifications.. ........................................................................\
...................................... 308-0 1 -2
DESCRIPTION AND
OPERATION
Clutch.. ........................................................................\
........................................................ 308-0 1 -3
........................................................................\
................................. Self-adjusting clutch.. 308-01 -3
DIAGNOSIS AND TESTING
Clutch.. ........................................................................\
........................................................ 308-01 -6
REMOVAL AND INSTALLATION
Clutch Disc and Pressure Plate .................................................................... (1 6 724 4) 308-0 1 -7
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308-01 -2 Clutch 308-01 -2.
SPECIFICATIONS
Torque Specifications
I:. :
Item
Clutch pressure plate retaining bolts
2006.0 Fiesta 1212006 GI1 31 95en
Nm
29
I b-ft
21
Ib-in
-
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308-01 -3 Clutch 308-01 -3
DESCRIPTION AND OPERATION
Clutch

Self-adjusting clutch Item Description
Advantages of the self-adjusting clutch
kern Descri~tion
I A I Release force in kN I
The self-adjusting clutch has the following
advantages over conventionally designed clutches:
lower release forces, which remain constant
over the service life and thus ensure high driving
comfort throughout the entire service life
increased wear reserve and therefore greater
service life due to the automatic wear
adjustment
/ i, ' Function
B
2006.0 Fiesta 1212006 G251010en
Release travel in mm
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308-01 4 Clutch 308-01 -4
DESCRIPTION AND OPERATION
Item Description
I I 1 Cover I
1 2 I Adjusting ring (ramp ring) I
1 3 1 Spring I
1 4 1 Sensing Belleville washer I
r5 1 Main Belleville washer I
A conventional clutch responds to clutch wear with
an increase in the release force, which ultimately
has to be delivered by the driver to press down the
clutch pedal.
This increase in the release force after clutch wear
is used on the self-adjusting clutch as the key
indicator for adjusting the clutch. The main
distinction to a conventional clutch is that
the main Belleville washer is not riveted in a fixed
-
manner to the cover, but instead is supported by (
a so-called sensing Belleville washer. In addition
an adjusting ring (ramp ring) is used to compensate
the wear of the clutch lining.
The sensing Belleville washer is hooked into the
clutch cover at the outside and, with the inner
tongues, forms the bearing for the main Belleville
washer.
The sensing Belleville washer is designed to deliver
a slightly greater opposing force under normal
conditions than the maximum required release
force.
Item Description
If when the clutch is operated the release force is
less than the opposing force of the sensing
Belleville washer, then the pivot bearing point of
the main Belleville washer remains in the same
position.
If however the release force increases due to lining
wear, then the opposing force of the sensing
Belleville washer is exceeded. If the
opposing force of the sensing Belleville
washer is exceeded, the sensing Belleville washer
and therefore also the main Belleville washer are
displaced towards the flywheel.
This displacement towards the flywheel has the
effect that the release force is reduced again.
Once the release force has dropped to the level of
the opposing force of the sensing Belleville washer
again (equilibrium of forces), the displacement of
the components towards the flywheel stops.
2006.0 Fiesta lazoos ~251010en
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308-01 -5 Clutch 308-01 -5
DESCRIPTION AND OPERATION
When the sensing Belleville washer is displaced
this results in an air gap between the main
i Belleville washer and the clutch cover.
The adjusting ring (ramp ring) arranged around the
circumference immediately compensates for the
air gap. To do this, springs press the adjusting ring
and therefore the ramp against the main Belleville
washer.
This results in a balancing of the clutch actuation
mechanism, which keeps the forces required to
operate the clutch constant throughout the entire
service life of the clutch.
2006.0 Fiesta 1212006 G251010en
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308-01 -6 Clutch 308-01 -6
DIAGNOSIS AND TESTING
Clutch
REFER to: Manual Transaxle and Clutch (308-00,
Diagnosis and Testing).
-- -- - - - -
2006.0 Fiesta 1212006 GI 8068en
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308-01 -7 Clutch 308-01 -7
REMOVAL AND INSTALLATION
Clutch Disc and Pressure Plate(l6 724 4)
S~ecial Tool(s1 Installation
Removal
I. Remove the transaxle.For additional
information, refer to: (308-03A Manual
Transmission/Transaxle - Vehicles With:
5Speed Manual Transaxle (iB5))
Transaxle - I .6L Duratec-1 6V (Sigma)ll .6L
Duratec-16V Ti-VCT (sigma)- (~'m'val) 9 2. nCAUTION :Tighten the clutch pressure Transaxle - 1.8L Duratec-HE (M14) (Removal). plate retaining bolts finger tight and then
2m &AUTION:LOOS~~ the clutch pressure evenly
by two turns at a time in the sequence
plate retaining bolts by two turns at a time shown
to the specified torque.
in the
sequence shown. N0TE:lnstall new clutch pressure plate retaining I Remove the clutch disc and pressure plate. bolts.
Discard the bolts.
2006.0 Fiesta 121~0o6 G28811 en
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308-01 -8 Clutch 308-01 -8
REMOVAL AND INSTALLATION
Using the special tool, install the clutch disc
and pressure
plate.
3. Remove the special tool.
4. Install the transaxle. For additional
information, refer to: (308-03A Manual
Transmission/Transaxle - Vehicles With:
5-Speed
Manual Transaxle (iB5))
Transaxle - 1.6L Duratec-1 6V (Sigma)ll.GL
Duratec-1 6V Ti-VCT (Sigma) (Installation),
Transaxle - 1.8L Duratec-HE (M14)
(Installation).
2006.0 Fiesta 1212006 ~28811 en
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