Operator`s manual

Maintenance 119
Front and Rear Brake
System Air Pressure
Air pressure in the two circuits is monitored
by two pressure gauges on the right side
of the instrument panel. The gauge for the
secondary (front) brake circuit is marked
with an “F” within a symbol and The gauge
for the primary (rear) brake circuit is marked
with an “R” within a symbol. The two
pointers should register equal or nearly equal
pressure. By observing the gauge pointers,
the operator is forewarned in the event of a
pressure drop in either or both of the circuits,
and also may readily identify the specific
circuit.
Before operating the vehicle, check the air
gauges which indicate air pressure.
The LED lights up if the air pressure drops
below 65 psi. DO NOT operate the vehicle
in this condition of air pressure being below
65 psi.
Gauge 1
Gauge 2
Air Tubing and Hoses
All compressed air tubing and hoses need
regular inspection. Check for signs of wear
and that the routing is not near parts that can
cause damage.
Have any damaged tubing or hoses replaced
by your local Volvo Truck dealer.
W3005381