2007 FORD FIESTA Workshop Manual

308-03-7 Manual Transmission/Transaxle 308-03-7
DESCRIPTION AND OPERATION
lnput shaft
Item Description Item Description 1
2006.0 Fiesta 1212006 G281365en
1
2
3
4
5
6
7
8
9
10
11
Ball bearing
lnput shaft
Reverse gear idler
I st gear wheel
Reverse gear wheel 2nd
gear wheel
3rd gear wheel
4th gear wheel
Snap ring
5th gear wheel
Snap ring
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308-0318 Manual Transmission/Transaxle 308-03-8
DESCRIPTION AND OPERATION
Output shaft
/'
Item Description
I 1 I Open cylinder roller bearing I
1 2 1 Output shaft with differential drive wheel I
1 3 1lst gear wheel I
1 4 1 1st gear double synchronisation I
151
Synchroniser - I stl2nd gear with reverse
gear
wheel
1 6 12nd gear double synchronisation I
Item Description
1 7 12nd gearwheel I
1 8 13rd gear wheel I
1 9 13rd gear simple synchronisation I
1 10 1 Synchroniser assembly - 3rdl4th gear I
11
12
2006.0 Fiesta 12/2006 G281365en
13 4th gear simple synchronisation
4th gear
wheel
Ball bearing (closed both
sides)
L
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308-03-9 Manual Transmission/Transaxle 308-03-9
DESCRIPTION AND OPERATION
Description Description
Double synchronisation
Item Description 1st and 2nd gears are double synchronised.
1 5 1 Synchroniser hub I
3
4
2006.0 Fiesta 1212006 G281365en
The effective synchronisation surface for double
synchronisation is almost twice that of simple
svnchronisation. Because of this, the
weeds of
1
2 Gearwheel
Inner synchroniser ring
Conical ring Outer synchroniser ring
tie gearwheels are equalised mbch faster, which
considerably improves gearshifting comfort.
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308-03-1 0 Manual Transmission/Transaxle 308-03-1 0
DESCRIPTION AND OPERATION
Differential assembly
Item Description
I 1 1 Bearing I
1 2 1 Crown wheel I
1 3 1 Differential assembly I
4 Sender wheel - Vehicle Speed Sensor
I I (VSS)
The differential assembly is built into the
transmission housing.
The drive torque is transmitted to the differential
by the crown wheel which is bolted to it. The differential
assembly contains differential
pinion gears mounted on a spindle and the axle
halfshaft pinion gears which connect to the front
wheel axle halfshafts through helical gearing.
The axle halfshaft pinion gears can revolve around
the differential pinion gears when the road wheel
speeds are different
(e.g when cornering).
On vehicles without Anti-lock Brake System (ABS)
a VSS detects the speed of the differential
assembly at the VSS sender wheel.
On vehicles with ABS the VSS sender wheel is
also installed. The VSS is however not installed in
this case. A plug with an O-ring closes the
corresponding bore instead.
2006.0 Fiesta la2006 G281365en
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308-03-1 1 Manual Transmission/Transaxle 308-03-1 1
DESCRIPTION AND OPERATION
Internal shift mechanism
'
' Layout
Item Description
I I I Selector gate I
1 3 1 Return spring from reverse gear position I
1 4 1 Reverse gear selector shaft I
-
1 7 1 Selector interlock I
5
6
Itern Descri~tion
Snap ring
Shift rod
- 5th gearlreverse gear
1 8 1 Selector shaft I
1 9 1 Guide sleeve I
The shift locking bush prevents two gears from
being engaged at the same time.
The selector interlock maintains engagement of
the selected gear.
Both the shift and the select process is performed
through the selector shaft.
2006.0 Fiesta 121zoo6 G281365en
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308-03-1 2 Manual Transmission/Transaxle 308-03-1 2
DESCRIPTION AND OPERATION
Select movement
/
Item Description If the gearshift lever is moved to the left or right,
1
2
3
The axial movement of the selector cable is
At the same time the shift locking bush prevents
transferred at the transmission to the selector shaft
access to other gear combinations~ which can turn in its bearing.
Shift locking
bush
4
2006.0 Fiesta 1212006 G281365en
the selector shaft and the selector boss both turn
together in the corresponding direction.
Selector shaft
Selector boss As this
happens, the selector shaft is guided by a
pin in the selector gate.
fork.
Selector gate
The
selector boss selects the required selector
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308-03-1 3 Manual Transmission/Transaxle 308-03-1 3
DESCRIPTION AND OPERATION
Shift movement
Item Descri~tion Here the axial movement of the shift cable at the
If the gearshift lever is moved forwards or
backwards, the selector shaft and the selector boss
both move vertically together.
As this happens, the selector shaft is guided by a .
After the gear pair to be shifted has been selected, pin
in the selector gate.
the shift movement takes place. The selector boss shifts the required selector fork.
1
At the same time the shift locking bush prevents
access to other gear combinations.
Shift locking bush
2006.0 Fiesta 1212006 G281365en
transmission produces
an axial movement of the
. selector shaft.
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308-03-1 4 Manual Transmission/Transaxle 308-03-1 4
DESCRIPTION AND OPERATION
Engage reverse gear
Item Descri~tion When shifting into reverse gear, the gearshift lever
engages through a pin in the reverse gear selector
shaft.
During the select and shift process the selector
shaft is guided through the selector gate by a pin.
1 Shift locking bush
movement of the selector cable is transferred to is
moved backwards. The selector boss engages
in the 5th gearlreverse gear shift rod, which in turn
5
6
the selector shaft which can turn in its bearing.
2006.0 Fiesta la2006 G281365en
At the same time the shift locking bush prevents In order to select reverse gear, the gearshift kver access to other gear combinations, must be moved to the right over and past the
reverse gear inhibit device. As this occurs the axial
Selector boss
Selector gate
The reverse gear idler
is slid by the reverse gear
selector shaft and reverse gear is engaged.
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