Hose Inspection; Lubrication; Wheels And Tires; Wheel Bearings - PREVOST X3-45 VIP 2017 Owner's Manual

8-12 Care and Maintenance

HOSE INSPECTION

Inspect hoses for leaks regularly to ensure
efficient, economical and safe operation of the
engine and related equipment.
Carefully inspect all fittings, clamps and ties. To
prevent chafing, make sure hoses are not
touching shafts, couplings, heated surfaces,
sharp edges or other parts. Since hose clamps
and ties can vibrate loose or fail over time,
inspect frequently and tighten or replace as
necessary.
Correct leaking hoses immediately. Failure to
correct leaks can cause severe damage to the
equipment, as well as increase operating costs
due to lost fluids. Treat fuel and oil leaks as an
immediate fire hazard.
WARNING
Personal injury and property damage may
result from fire caused by leaking flammable
fluids.
Hose Service Life
Hoses have a limited service life. Thoroughly
inspect hoses annually. Look
damage or indications of twisted, worn, crimped,
cracked or leaking lines. Replace damaged
hoses immediately.
Hoses should be replaced during major overhaul
or after a maximum of seven years service.
Make sure replacement hoses match the original
equipment manufacturer's specifications.

LUBRICATION

Grease all lubrication points during scheduled
maintenance. For heavy loads or extended use,
lubricate more often. Refer to the Maintenance
Manual, section 24 for information on lubrication.

WHEELS AND TIRES

Check for loose wheel nuts. Cracks can appear
in many places but typically radiate out from
where a load is applied. Both aluminum alloy and
steel wheel nuts should be tightened to 450 to
500 foot-pounds (610 to 680 Nm.) torque.
Keep the tires inflated to the recommended
inflation pressure to prolong tire life and for
safety.
NOTE
Recommended tire inflation pressures are
given in the "Vehicle Final Record", placed in
the technical publications package supplied
with the vehicle.
pressures are on the Department of Transport
certification plate located on the L.H. console
besides the driver's seat. When special tires
are installed by Prevost on a new vehicle, a
special tire inflation chart is added next to the
certification plate.
Do not exceed maximum inflation pressure.
Incorrect tire pressure increases tire wear and
could lead to loss of driving control because of
reduced road handling. Check tire pressure
regularly.

WHEEL BEARINGS

Check wheel bearing cover for overheating
(especially after the service brakes) during fuel
stops by touching the wheel bearing cover.
for surface
If replacement tires are different from those
described on the certification plate, pressure
must be adjusted as requested in the Tire and
Rim Association Manual.

SERVICE BRAKE TEST

Check for correct pressure build-up. Pressure
loss should not exceed 3 psi/minute (21
kPa/minute) with engine stopped and without
brake applied. Perform a full brake application.
Air loss should not exceed 7 psi/minute (48 kPa/
minute).
PARKING / EMERGENCY BRAKE TEST
Release
service brake pedal until air pressure drops to 65
psi (448 kPa). Make sure the warning buzzer
operates and that the emergency brakes apply
(the control valve knob lifts up). Allow air
pressure to reach 95 psi (655 kPa) before
releasing parking brake.
Driving the vehicle while the parking brake is
applied should not be possible.
The cold tire inflation
WARNING
WARNING
parking/emergency brake. Pump