High Range Lock-Up - Volvo FM Handbook

The vehicle should remain stationary when the power
take-off is engaged.
The power take-off should not be engaged during
driving. If for some reason it must be engaged, then
gearshifting is not allowed.
On trucks with I-shift it will not be possible to change
gear if the power take-off is engaged while driving.
The desired gear must be selected while the truck is
stationary.
Engage power take-off
It does not matter which position the gear shifter is in.
1 Hold in the lock button on the switch
2 Press in the lower part of the switch
The indicator lamp lights and the display shows
PTO.
Disengage power take-off
Press in the upper part of the switch.
When the gearbox is in neutral it is possible to choose
between two gears, N1 and N2, with different speed
ranges.
1 Move the gear lever to N
2 Select N1 or N2 with the +/- button
3 See which gear is selected on the display
N2 allows about 30% higher engine speed than N1.

High range lock-up

High range lock-up is used when a PTO is installed in
the powertrain. The gearbox will start in high gear
when the vehicle is disengaged from the engine and
gearbox and the powertrain PTO is engaged. Lock-up
will already be active at low engine speed.
Engage
1 The engine must be idling at low speed
2 Move the gear lever to N
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