Ford Galaxy / Ford S-MAX. Manual - part 550
with two friction surfaces and the synchronizer cone also with two friction surfaces. The
outer synchronizer cone is virtually unchanged. It is fitted into the synchronizer hub with its
recesses in such a way that it can only turn by half a tooth in both directions.
An important aspect for the action of the two friction surfaces is the torque proof
connection between the gear wheel and the intermediate ring. At the same time, the two
synchronizer rings are also connected together in a torque proof manner via pawls. The
synchronizer therefore operates like a multiple wet clutch.
Power flow
When a gear is to be selected, the synchronizing sleeve in question located on the relevant
shaft is moved by its selector fork along the synchronizing hub towards the trailing wheel of
the desired gear. The synchronizing sleeve and synchronizing hub engage and lock the
trailing wheel to the hub and the relevant countershaft.
The power flow is transferred from the clutch to the input shaft. The power flow travels
from the input shaft to a countershaft via a pair of drives consisting of a gear and a trailing
wheel. The trailing wheel is locked to the hub by means of the synchronizing unit, which
allows the power flow to be transferred. The power flow is transferred from the
countershaft via the final drive pinion to the final drive (ring gear) mounted on the
differential.
1st gear
Description
Input shaft
1st-2nd and 5th-6th gear output shaft
Ring gear
Toothed wheel - 1st gear
Synchronizer hub - 1st/2nd gear
Output pinion - 1st-2nd and 5th-6th gear output shaft
Gear wheel - 1st gear
2nd gear
Description
Input shaft
Item
A
B
4
15
19
20
21
Item
A
Part Number
-
-
-
-
-
-
-
Part Number
-
-