Operating instructions
64
Gear shifting
Safety functions during gear shifting
The machine is provided with safety functions which protect the
engine and transmission via the electronic control unit of the
transmission in the event of an operator error.
These functions are:
– The engine can only be started with the gear selector in the
neutral position (N position).
– The gear selector control may be moved from the N position to
different gear positions, but no gear will be engaged, if the
engine speed exceeds 18.3 r/s (1,100 rpm) (stationary
machine). If the engine speed is above 1100 rpm it will be
lowered automatically to 1100 rpm before a gear is engaged.
– When the parking brake is applied, no gear will be engaged.
– When delayed stop has been connected (count-down has
started), it is not possible to engage a gear (optional
equipment).
If the gear selector control is moved to the N position while
operating:
– If the speed is above 7 km/h (4.3 mph) the transmission will not
shift from the engaged gear.
– If the speed is below 7 km/h (4.3 mph) the transmission will
shift into Neutral.
If the gear selector control is moved past the N position
(change of travelling direction while operating):
– If the speed is above 7 km/h (4.3 mph) the transmission will not
shift from the engaged gear.
– If the speed is between 2 km/h and 7 km/h (1.6 and 4.3 mph)
the transmission will shift into Neutral.
– If the speed is below 2 km/h (1.6 mph) and the engine speed is
below 18.3 r/s (1100 rpm) a new gear may be selected.
Overspeed protection
Q
If there is a risk of the engine overspeeding, an upshift is made
to the next higher gear, irrespective of the position of the gear
selector and the gear-shift inhibitor.
