Weekly maintenance Daily and Weekly Maintenance
– 54 –
Brake System Air Dryer
(optional equipment)
WARNING! Do not operate
the vehicle in the event of a
malfunction in any air cir-
cuit. Such a malfunction may pre-
vent the brake system from
operating properly, and could result
in an injury accident. The vehicle
should not be operated until the sys-
tem is repaired and both braking cir-
cuits, including all pneumatic and
mechanical components, are work-
ing properly.
WARNING! Ensure that the
following safety instruc-
tions are strictly observed:
• Fully charged air reservoirs con-
tain air at an approximate pres-
sure of 120 psi (8.4 bar). It is
essential that suitable eye pro-
tection and protective gloves are
worn while releasing the air
pressure from the reservoirs.
• The air dryer and filter cartridge
contain pressurized air at the
brake system operating pres-
sure. Do not puncture nor
attempt to remove the filter car-
tridge.
1. Chock the road wheels and fully
charge the vehicle air system.
WARNING! If the supply and
service tanks are not
drained at the recommended
frequency, water could enter the air
lines and valves. This could cause
corrosion or blockage, which could
compromise the brake system safety
and potentially cause an injury acci-
dent.
2. Pull each air reservoir drain valve
ring and check that the expelled air
is free of any condensate (water/
oil/particles); should any conden-
sate be observed from any air res-
ervoir consult your dealer.
PB1340A.book Page 54 Friday, September 1, 2000 7:40 AM
