Loading And Unloading 255; General; Ride Height Control - Volvo FM Handbook

General

The air suspension system must be active during all
loading and unloading. The system is active if the
ignition is turned on, the pressure in the air tanks is
greater than 8 bar, when the parking brake is released,
when the air suspension control box is used or if
"Using air suspension with ignition turned off".
On trucks in ADRit is sometimes necessary for the
main power to be switched off during loading and
unloading. Certain steps have to be taken, to avoid
damage to the chassis. Refer to "Loading and
unloading with main power disconnected".

Ride height control

Change height with the control box
The height of the truck above ground can be controlled
manually with the aid of the remote control box. This
has a 3 meter long cable and magnets on the back so
that it can be used and secured outside the cab.
The engine does not need to be running in order to use
the control box, refer to "Using air suspension with
ignition turned off", but the air pressure in the system
must be sufficient.
Road speed must be lower than 30 km/h when the
control box is used.

Loading and unloading 255

Turn off the electronic air
suspension system when using
support legs, a plough without
floating position, or other
equipment that effects the truck's
height above the road. On trucks
with equipment which affects ride
height, there is a special switch to
shut off the air suspension
system. When body-building a
truck at a later date, the function
for turning off the air suspension
system can be implemented by a
Volvo workshop.
Warning!