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
Operating Instructions Using the Brake System
Model 330 PB1318 3/01
– 89 –
1. Slow down carefully.
Here are some things you can do to assist in slowing
the vehicle:
• Downshift - Putting the transmission into a lower
gear will help slow the vehicle.
• Pump the brakes - Pumping the brake pedal may
generate enough hydraulic pressure to stop the
vehicle.
• Use the parking brake - The parking or emergency
brake is separate from the hydraulic system. There-
fore it can be used to slow the vehicle.
2. Move a safe distance off the road and stop.
3. Set the parking brake. (See
page 35
.)
4. Turn on the emergency flasher and use other warning
devices to alert other motorists.
Wet or Overheated Brakes
• Wet Brakes
If you have been driving in heavy rain or deep stand-
ing water, your brakes will get wet. Water in the
brakes can cause them to be weak, to apply
unevenly, or to grab. These conditions can cause a
lack of braking power, wheel lockups, or pulling of the
vehicle to one side or the other.
Avoid driving through deep puddles or flowing water if
possible. If not possible, you should to the following:
• Slow down.
• Place transmission in lower gear.
• Gently press on the brake pedal.
• Increase engine speed while keeping light pressure
on the brake pedal for a short distance to dry out the
brake linings.
• Overheated Brakes
While traveling down steep hills, gravity will tend to
speed you up. You must go slow enough that your
brakes can hold you back without getting too hot. If
you ride the brake pedal and the brakes get too hot,
they may “fade”, causing you to press even harder in
an attempt to maintain your desired stopping power.
The brakes may even fade so much that you won’t be
able to slow down or stop at all.
Using lower transmission gears will help keep the
vehicle from going too fast. Using lower gears allows
engine compression and friction to help slow the










