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 Operating the Transmission
Model 330 PB1318 3/01
– 67 –
During Normal Driving
If you want to shift directly into any gear other than first or
reverse, depress the clutch pedal only far enough to release
the clutch. Pushing the clutch to the floor applies the clutch
brake and could cause gear hang-up.
CAUTION: Be careful not to apply the clutch
brake while the vehicle is moving. The purpose
of the clutch brake is to stop the transmission so
that you can shift into a starting gear without
grinding gears. Applying the clutch brake when
the vehicle is moving causes a braking effect on
the drivetrain and shortens the service life of the
clutch brake.
Double Clutching
Whether you are upshifting or down shifting, it is best to dou-
ble clutch. Double clutching is easier on the transmission and
on the engine, helping your vehicle match engine speed with
driveline speed and achieving clash-free shifts.
To double clutch:
1. Push the clutch pedal down to disengage the clutch.
2. Move the gear shift lever to Neutral.
3. Release the pedal to engage the clutch. This lets you
control the rpm of the mainshaft gears, allowing you to
match the rpm of the mainshaft gears to those of the out-
put shaft.
• Upshifts: let the engine and gears slow down to the
rpm required for the next gear.
• Downshifts: press accelerator, increase engine and
gear speed to the rpm required in the lower gear.
4. Now quickly press the pedal to disengage the clutch and
move the gear shift lever to the next gear speed position.
5. Release the pedal to engage the clutch.
More Transmission Tips
“Riding” the Clutch
The clutch is not a footrest. Do not drive with your foot resting
on the clutch pedal. It will allow your clutch to slip, causing
excessive heat and wear—damage could result.










