OPERATOR'S MANUAL
Table Of Contents
- How to Use This Manual
- Safety Signals
- Vehicle Safety
- How to Find What You Want
- A Special Word About Repairs
- Shop Manuals
- Preventive Maintenance Section
- Additional Sources of Information
- Start–Up
- Instruments and Controls
- Introduction
- Warning Lights and Buzzer
- Self Test
- Speedometer and Odometer
- Tachometer
- Coolant (Water) Temperature Gauge
- Engine Oil Pressure Gauge
- Dual Air Pressure Gauge (Air Reservoir)
- Fuel Gauge
- Voltmeter (option)
- Transmission Temperature Gauge (option)
- Air Filter Restriction Indicator (option)
- Headlight Switch
- Daytime Running Lights (option)
- Panel Lights
- ID and Clearance Lights
- Windshield Wipers/Washer
- Ignition Key Switch
- Parking Brake
- Cruise Control Switch
- Hand Throttle Control
- Heating and Air Conditioning
- Accessories
- Seats
- Steering Column and Mirrors
- Operating the Engine
- Operating the Transmission
- Using the Brake System
- Operating the Rear/Drive Axle
- More Driving Tips and Techniques
- Vehicle Recovery and Spring Brakes
- Shut–Down
- Introduction
- Maintenance Schedule and Lubrication
- Engine Maintenance
- Cooling System
- Brake System
- Air System
- Tires and Wheels
- Heater and Air Conditioner
- Electrical System
- Cab Maintenance
- Transmission and Clutch
- Steering and Driveline
- Front Axle and Suspension
- Rear Axle and Suspension
- Frame and Fifth Wheel
- Noise and Emission Control
- Consumer Information and Vehicle Identification
Heater and Air Conditioner Preventive Maintenance
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PB1318 3/01 Model 330
CAUTION: During extreme cold weather, do not
blow hot air onto cold windshields. This could
crack the glass. Turn the air direction lever to
Defrost and reduce the fan speed while the
engine warms. If the engine is already warm,
move the temperature selector to Cool, then
gradually increase the temperature when you
see that the windshield is starting to warm-up.
Air Conditioner
WARNING! The air conditioning system is under
pressure. If not handled properly during servic-
ing, it could explode, causing injury to you and
damage your vehicle. Any servicing that
requires depressurizing and recharging the air
conditioning system must be conducted by a
qualified technician with the right facilities to do
the job.
• Check the compressor and drive clutch for noise and
vibration. If you find problems, have the system checked
thoroughly. A malfunctioning clutch usually indicates
trouble elsewhere in the system.
• Check the evaporator core and condenser core for
debris restricting air flow. Clean if necessary. Small parti-
cles may be removed with compressed air blown through
the core in the opposite direction of normal air flow.
WARNING! Wear eye protection any time
you blow compressed air. Small particles
blown by compressed air could injure your
eyes.
• Check the compressor belt for condition and proper ten-
sion.
• Check all hoses for kinks, deterioration, chafing, and
leaks. Adjust kinked or chafing hoses to eliminate restric-
tions and prevent further wear.
• Check all components and connections for refrigerant
leaks. If you discover a leak, do not try to tighten a con-
nection. Tightening a connection may cause a worse
leak. Have a qualified technician correct the problem.
NOTE: A leaking evaporator or condenser core
cannot be repaired; it must be replaced.
Have the air conditioning system fully serviced annually by
your Peterbilt Dealer or Authorized Service Center. Qualified
service technicians will have to evacuate and recharge the
system.