3
CF65/75/85 series Description of components
ZF 8/16S-151/181 AND 16S-221 GEARBOXES
2-1
2. DESCRIPTION OF COMPONENTS
2.1 SYNCHRONISER
B-lock synchronisation
The synchroniser consists of the following parts:
1. Gear
2. Selector ring
3. Synchromesh ring
4. Selector sleeve support
5. Pressure spring
6. Thrust piece
7. Selector sleeve
8. Main shaft
In neutral, the selector sleeve (7) is in the centre
position.
Pressure springs (5) push the thrust pieces (6)
into a wedge-shaped recess in the selector
sleeve (7).
The gear wheels (1) and corresponding selector
rings (2) move freely around the main shaft (8).
If the selector sleeve (7) is shifted to the right
from the neutral position, the synchromesh ring
(3) is pushed against the friction cone of the
selector ring (2) by the thrust pieces (6).
The difference in speed immediately turns the
synchromeshring(3)asfarasastoponthe
selector sleeve support (4), which is not in the
figure, and thus prevents further movement of
the selector sleeve (7).
W 3 03 046
2
3
5
1
4
7
6
8
7
ᓻ 200337
https://www.truck-manuals.net/
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