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 the Transmission Operating Instructions
– 68 –
PB1318 3/01 Model 330
Release Bearing Wear
When you must idle your engine for any period of time, shift
your transmission to Neutral and disengage the clutch (take
your foot OFF of the pedal). This helps prevent unnecessary
wear to your clutch release bearing, and it is less tiring for
you, too.
Clutch Adjustment
Inspect manual clutches according to the manufacturer’s rec-
ommendations. Regular maintenance should be followed to
maintain correct clutch adjustment. Have your dealer’s Ser-
vice Department perform any adjustment necessary.
Tips
• Always use the clutch when making upshifts or down-
shifts.
• Always select a starting gear that will provide sufficient
gear reduction for the load and terrain.
• Never downshift when the vehicle is moving too fast.
• Never slam or jerk the shift lever to complete gear
engagement.
• Never coast with the transmission in Neutral and the
clutch disengaged.
• To provide smooth gear engagements while shifting, use
proper coordination between shift lever and clutch.
Operating Automatic Transmissions
An automatic transmission makes shifting much easier, of
course. But because your truck pulls a heavy load, it is impor-
tant to use it efficiently. For correct automatic transmission
operation, also see the transmission manufacturer's
Opera-
tor’s Manual.
• On most automatic transmissions there is no “PARK”
position, so you will need to apply the parking brake
before leaving the cab. See
page 72
.
WARNING! Do not leave the cab without apply-
ing the parking brake. The truck could roll and
cause an injury accident. Always apply the park-
ing brake before you leave the cab.
The MD Automatic Transmission
The MD (electronic) Series of transmissions have four, five,
or six forward speeds, a Neutral position, and one reverse
speed. Pressing the appropriate button selects the desired
gear—a beep will sound and the mode select window on the
control unit will display the gear selected.










