1999 Volvo WG Service and Repair Manual

1999 Volvo WG service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Designed for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and reference wiring diagrams and system sections quickly while you work.

What’s included

• Step-by-step repair procedures and service information
• Specifications and reference data (where provided)
• Wiring diagrams and electrical sections
• Powertrain, brakes, steering, suspension, HVAC and more

Trims covered

• WG64 Straight Truck - Medium Conventional
• WG42T Tractor Truck - Medium Conventional
• WG42 Straight Truck - Medium Conventional
• WG64T Tractor Truck - Medium Conventional

Engines covered

• 12.1L 740Cu. In. 6 DIESEL
• 10.5L 638Cu. In. 6 DIESEL
• 10.8L 10834CC 661Cu. In. l6 DIESEL Turbocharged
• 14.0L 14013CC 855Cu. In. l6 DIESEL Turbocharged
• 11.1L 11096CC 677Cu. In. l6 DIESEL Turbo/Aftercooled

Index / Table of contents

• Body
• Brakes
• Chassis Electrical
• Driveline
• Engine Cooling
• Engine Electrical
• Engine Mechanical
• Engine Performance & Emission Controls
• Fuel System
• General Information & Identification
• Heating, Ventilation, & Air Conditioning
• Hybrid & Electric Vehicle Systems
• Steering
• Suspension
• Transmission, Clutch, & Transfer Case
• Wiring Diagrams