3
GEARBOX - PNEUMATIC SECTION
General CF65/75/85 series
1-16
The moment when the protection is engaged is
determined by the VIC electronic unit (3).
The moment when the protection is engaged is
dependent on the vehicle speed signal.
The gate protection valve (1) is energised if the
following conditions are met:
The vehicle speed is above the set speed, i.e.
the VIC electronic unit (3) supplies voltage to the
low-range switch (2).
The low-range switch (2) is closed if the gearbox
is shifted to the low range.
Pressure is sent to the locking cylinder (4) via
the electronic gate protection valve (1). As a
result, gate 1-2 can no longer be engaged. In
the case of a gearbox with a separate air
distribution block, the locking cylinder is
mounted at the back of the selector housing. In
the case of a gearbox with an integrated air
distribution block, the locking cylinder is
mounted at right angles to the selector housing.
However, if the high range is selected, the gate
protection valve (1) can no longer be energised
as the low-range switch (2) has been opened.
Gate 5-6 (1-2) can then again be engaged.
Note:
For reasons of safety, downshifting must always
be possible. Hence, by exerting additional
shifting power, it is still possible to reach gate
1-2 against the pressure of the locking cylinder.
4
ᓻ 200337
https://www.truck-manuals.net/
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