Differential Lock - Volvo FM Handbook

140 Driving

Differential lock

On vehicles with EBS, the differential lock can be
engaged without depressing the clutch. On pressing
the switch, the EBS system will attempt to synchronise
the wheels so that they rotate at the same speed before
engaging the differential lock. If this is not achieved
within a certain time, the system will wait with the
engagement of the differential lock until the wheels
rotate at the same speed.
For automatic engagement of the differential lock, see
"Automatic engagement of differential lock (DLC -
Diff Lock Control)" on page
1 Set the switch to the lower position
2 Wait until the control lamp in the instrument
panel flashes
3 Accelerate with care so as not to damage the
drive shafts and gears
4 Drive away from the slippery area
5 Release the accelerator pedal
6 Disengage the differential lock
The differential lock is engaged. The
lamp on the instrument panel
flashes.
Note!
The differential lock is not engaged
until the warning lamp in the
instrument panel flashes. The
differential lock is engaged as long
as the warning lamp is flashing,
even if the switch is turned off.
J4017788