3
ZF 6S-850 GEARBOX
Component description CF65/75/85 series
2-2
As a result of continued pressure on the
synchroniser sleeve (7) (friction), the speed of
the gear (1) to be shifted with the clutch body (2)
matches the speed of the main shaft (8).
The bevelled sides of the teeth on the
synchromesh ring (3) and the synchroniser
sleeve (7) cause the synchromesh ring (3) to be
turned back slightly after synchronisation.
This releases the lock and allows the
synchroniser sleeve (7) to be moved into the
teeth of the clutch body (2).
Hence the relevant gear is engaged.
A. Not engaged
B. Synchronise
C. Engaged
Double-cone synchronisation
As a result of the speed difference to be
eliminated in the lower gears, the
synchronisation forces may be considerable. In
order to achieve effective synchronisation, a
synchroniser with a double cone is used.
This synchroniser consists of an outer and an
inner ring (synchromesh rings) connected to the
main shaft of the gearbox by means of the
selector sleeve support.
The ring between the two synchromesh rings is
connected to the gear wheel by means of the
clutch body.
When the selector sleeve moves into the clutch
body, two synchronisation surfaces are active.
W 3 03 015
ABC
732
W 3 03 047
ᓻ 0111
5
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