OPERATOR'S MANUAL

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Table Of Contents

How to Use This Manual
Safety Signals
- WARNING
- CAUTION
- NOTE
Vehicle Safety
How to Find What You Want
A Special Word About Repairs
Shop Manuals
Preventive Maintenance Section
Additional Sources of Information
- Installed Equipment — Operator's Manuals
- Truck Driver's Handbook
- Other Sources
Start–Up
- Introduction
- Door Lock and Keys
- Cab and Frame Access
- Hood Hold Downs and Tilt
- Hood Safety Cable
- Safe Vehicle Operation
- Vehicle Loading
- Emergency Equipment
- Driver's Check List
Instruments and Controls
- Introduction
  - Instrument Index
- Warning Lights and Buzzer
- Self Test
- Speedometer and Odometer
- Tachometer
- Coolant (Water) Temperature Gauge
  - Engine Overheating
- Engine Oil Pressure Gauge
- Dual Air Pressure Gauge (Air Reservoir)
  - Air Loss Emergency Procedure
- Fuel Gauge
- Voltmeter (option)
- Transmission Temperature Gauge (option)
- Air Filter Restriction Indicator (option)
- Headlight Switch
- Daytime Running Lights (option)
- Panel Lights
  - To Operate the Panel Lights:
- ID and Clearance Lights
- Windshield Wipers/Washer
- Ignition Key Switch
- Parking Brake
  - - for trucks with hydraulic brakes:
  - Using the Parking Brake
- Cruise Control Switch
- Hand Throttle Control
Heating and Air Conditioning
- Introduction
- Controls
- Heating
- Defogging
- Cooling
Accessories
- Radio
- Cigarette Lighter
- Ashtray
- Air Operated Horn (Option)
- Glove Compartment
- Dome Light
Seats
- Introduction
- Seat Adjustment
  - Standard Driver's Seat
  - Driver's Seat with Air Suspension (Option)
- Safety Restraint Belts
- Tether Belts
  - Fixed Tethers
  - Tether Adjustment
- Komfort–Lok® Latch
- During Pregnancy
- Passengers
- Belt Damage and Repair
Steering Column and Mirrors
- Introduction
- Turn Signal/High Beam Switch
  - Turn Signals
  - High Beam
- Emergency Flasher Switch
- Trailer Brake Hand Valve
- Adjustable Steering Column (option)
- Horn
- Mirrors
  - Power Mirror (Option)
  - Heated Mirrors (Option)
Operating the Engine
- Introduction
- Starting Procedure — Normal Temperature
  - Use of Accelerator
- Starting Procedure — Cold Weather
  - Engine Block Heater (Option)
  - Cold Weather Starting—Air Intake Heater
- Engine Warm–Up and Idling
  - Warm–Up Procedure
- Idling the Engine
- Engine Fan Switch (Option)
- Cruise Control (Option)
- Engine Shutdown System (Option)
Operating the Transmission
- Introduction
- Operating Manual Transmissions
  - 6, 9, 10, and 11–Speed Manual
  - Transmission Warm–Up
- Putting the Vehicle in Motion
- More Transmission Tips
- Operating Automatic Transmissions
  - The MD Automatic Transmission
Using the Brake System
- Introduction
- Using the Parking Brake
- Tractor and Trailer Air Supply Valve
- Brake Safety and Emergency
- Anti-Lock Braking System
- Trailer Brake Hand Valve
- Driving Bobtail or With an Unloaded Trailer
  - Bobtail Brake Proportioning System
- Engine Retarder (option)
  - Exhaust Brake
- Brake Components
- Hydraulic Brakes
Operating the Rear/Drive Axle
- Introduction
- Interaxle Differential Lock
  - Inter–Axle Differential Lock Operation
More Driving Tips and Techniques
- Introduction
- Coasting
- Descending a Grade
- Economical Driving
- Safe Driving
- Air Suspension Height/Air Pressure
  - Setting Ride Height
  - Driving with Deflated Air Springs
- Fifth Wheel
Vehicle Recovery and Spring Brakes
- Introduction
- Vehicle Recovery Guidelines
  - Recovery Rigging
  - Returning Vehicle to Service
- Spring Brakes — Manual Release
- Freeing the Vehicle from Sand, Mud, Snow and Ice
  - Tire Chains
Shut–Down
- Introduction
- Final Stopping Procedures
- Before Stopping the Engine
  - Turbocharger
- Refuelling
  - Location of Fuel Shut–Off Valves
Introduction
- Safety Precautions
- Environmental Protection and Material Hazards
- How to Order Parts
Maintenance Schedule and Lubrication
- Introduction
- Preventive Maintenance Intervals and Schedule
  - Maintenance Intervals
  - Maintenance Schedule
- Lubrication Specifications
- Oil Reservoirs
- Lubrication Chart
Engine Maintenance
- Engine Lubrication
- Fuel System
- Accessory Drive Belts
- Engine Fan
- Exhaust System
Cooling System
- Introduction
- Radiator and Hose Clamps
- Topping Up
- Adding Coolant
- Change and Refilling
- Engine (Block) Heater (option)
Brake System
- Introduction
- Lubrication
- Checks and Adjustments
- Hydraulic Brake System
- Anti–Lock Braking System (ABS)
Air System
- Introduction
- Scheduled Maintenance
- Air Tanks
- Dual Air Gauge and Air Leaks
- Air Compressor
- Air Dryer
- Air Intake System
- Air Filter Replacement
Tires and Wheels
- Introduction
- General Safety Requirements
- Tire Inspection and Replacement
- Tire Inflation and Loading
- Wheel Mounting and Fastening
- Disc Wheels
- Demounted Rims
- Comparing Hub Piloted and Ball Seat Parts
- Tire Replacement
- Matching Tires
- Wheel and Tire Replacement for Trucks with Hydraulic Brakes
Heater and Air Conditioner
- Introduction
- Special Precautions
- Heater
- Air Conditioner
Electrical System
- Location Of Fuses
- Adding Electrical Options
- Truck-Body Connection
- Batteries
- Battery Care
- Jump Starting Vehicles
- Battery Charging
- Bulb Replacement
- Electrical and Alternator Precautions
Cab Maintenance
- Exterior Maintenance
- Cleaning, Protection and Weather–Stripping
- Safety Restraint System — Inspection
- Windshield Wiper/Washer
- Washer Reservoir
Transmission and Clutch
- Introduction
- All Transmissions
- Manual Transmissions
- Clutch System Introduction
- Clutch Adjustment — Normal Wear
- Automatic Transmissions
Steering and Driveline
- Power Steering
- Fluid Level and Refill
- Steering Driveline
- Driveshaft and U-Joints
Front Axle and Suspension
- Inspection
- Axle Lubrication
- Suspension Lubrication
- Torque
Rear Axle and Suspension
- General Maintenance
- Visual Inspection
- Rear Axle Lubrication
- Rear Suspension Fasteners
Frame and Fifth Wheel
- Introduction
- Fifth Wheel Maintenance
- Sliding Fifth Wheel
Noise and Emission Control
- Noise Emission Warranty
- Inspection and Maintenance Instructions
- Maintenance Log
Consumer Information and Vehicle Identification
- Reporting Safety Defects
- Vehicle Identification
  - Chassis Number Locations
- Complete Vehicle Certification Label
- Incomplete Vehicle Certification Label
- Component Identification

Operating Instructions Using the Brake System

Model 330 PB1318 3/01

– 75 –

The parking brakes act on the rear wheels only. They are

spring-applied, with air pressure used to release them.

Release air is supplied by both the front and rear circuit res-

ervoirs through a double check valve.

Trailer Park or Emergency Brake Application Only

If you ever have a failure or disconnect the air supply hose to

the trailer, the trailer parking brakes will set. The Red knob

will automatically pop OUT and seal off the tractor air reser-

voirs to protect the tractor air system pressure.

To apply the trailer brakes only:

Pull OUT the Red knob. This will exhaust air from the trailer

supply line, causing the tractor protection valve to close and

the trailer spring brakes to apply. The trailer is now in “emer-

gency” or “park.” This mode would be used to uncouple from

the trailer and during bobtail operation (running without a

trailer connected).

02393

SYSTEM PARK OR

CHARGE TRAILER

WITH TRACTOR PARKED

TRAILER

AIR

SUPPLY

PARKING

BRAKE

NORMAL OPERATING

POSITION

TRAILER

AIR

SUPPLY

PARKING

BRAKE

PARK TRAILER WITH

TRACTOR RELEASED OR

BOBTAIL TRACTOR

TRAILER

AIR

SUPPLY

PARKING

BRAKE

YELLOWRED

YELLOW

RED YELLOW

RED