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
Instruments and Controls Operating Instructions
– 24 –
PB1318 3/01 Model 330
WARNING! To reduce the chance of personal
injury and/or vehicle damage due to engine
overheating, never leave the engine idling with-
out an alert driver present. If the engine should
overheat, as indicated by the engine coolant
temperature light, immediate action is required
to correct the condition. Continued unattended
operation of the engine, even for a short time,
may result in serious engine damage or a fire.
For further details on engine operation, see the
Engine Oper-
ation and Maintenance Manual
in the glove compartment of
your vehicle.
Engine Oil Pressure Gauge
It is important to maintain oil pressure within acceptable lim-
its. If oil pressure drops below the minimum psi a Red Warn-
ing Lamp on the oil pressure gauge and the Stop Engine
Warning Lamp will come ON.
For further information on engine oil and normal operating
pressures, see the
Engine Operation and Maintenance Man-
ual
.
CAUTION: Continuing to operate your vehicle
with insufficient oil pressure will cause serious
engine damage.
• If the oil pressure fails to rise within 10 seconds after
the engine starts, stop the engine and determine the
cause.
• Check the engine manufacturer's manual for the cor-
rect oil pressure ranges for your vehicle's engine.
• If the oil pressure suddenly drops, or the audible
alarm and engine oil pressure warning light come on
while driving, do the following:
1. Slow down carefully.
2. Move a safe distance off the road and stop.
Engine Oil Pressure Gauge
02585










