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
Electrical System Preventive Maintenance
– 194 –
PB1318 3/01 Model 330
Replacement Bulbs
Electrical and Alternator Precautions
Take the following precautions to avoid burning out
alternator diodes:
• Do not start the engine with alternator disconnected
(connections removed) from the circuit.
• Before welding, disconnect all electronic connections to
the vehicle batteries.
• Remove battery power cable and insulate it from the
vehicle. See “Welding” on page 218
for more informa-
tion.
• Do not run the engine with the batteries disconnected.
• Do not disconnect the battery cables or alternator con-
nection cables with the engine running.
• Never turn the ignition switch to the IGN & START posi-
tion with the engine running.
• When charging the battery (installed in the vehicle) dis-
connect the battery cables.
• Do not reverse the cables of the alternator, starter motor,
or battery.
• Do not polarize the alternator. The alternator should not
be polarized like a generator. To ensure correct polarity,
use a test lamp or a voltmeter.
DESCRIPTION PART NO.
Headlights 9004LLBULB
Front turn signal 1156BULB
Marker 1895BULB
Stop/tail turn 1157BULB
Backup 1156BULB
Roof marker 194BULB
Dome 1141BULB
Warning lamp module
#37 or 73 (T1 3/4 wedge
base