Introduction and Overview
The official Haynes Service and Repair Manual for Audi 100 and A6 models.
This manual provides comprehensive service and repair information for Audi 100 and A6 models manufactured between May 1991 and May 1997. It covers both petrol and diesel engine variants. The content is designed to assist owners and professional technicians in performing maintenance, repairs, and overhauls with clear, step-by-step instructions.
For optimal safety and performance, always adhere to the procedures outlined in this manual and use appropriate tools and safety equipment.
Safety Precautions
Before commencing any work on your vehicle, it is crucial to prioritize safety. Always ensure the vehicle is securely supported on jack stands, the engine is cool, and the battery is disconnected if working on electrical components. Wear appropriate personal protective equipment, including gloves and eye protection.
Refer to the specific safety warnings and precautions detailed at the beginning of each relevant section within the manual. Never work under a vehicle supported only by a jack.
Routine Maintenance and Weekly Checks
Regular maintenance is essential for the longevity and reliable operation of your Audi. This section details routine checks and servicing procedures for both petrol and diesel models, typically performed at specified intervals or as part of weekly inspections.
Petrol Model Fluid Level Checks
This image illustrates key weekly checks for petrol models, including engine oil dipstick, coolant level, and the location of the oil/level plug for automatic transmission fluid. It also shows the air filter element renewal process. Regular inspection of these items helps prevent major issues and ensures optimal vehicle performance.
- Engine oil level check and top-up
- Coolant level verification
- Automatic transmission fluid level inspection
- Air filter element removal and replacement
Diesel Model Maintenance Procedures
This image highlights maintenance procedures specific to diesel models, such as checking the oil dipstick, adding oil via the filler cap, and inspecting the front brake pads. It also shows the process for disconnecting hoses for fuel filter removal, crucial for maintaining fuel system integrity.
- Oil level and top-up procedures
- Front brake pad inspection
- Fuel filter maintenance and replacement
Engine and Associated Systems Repair
This section covers detailed repair and overhaul procedures for the engine and its associated systems, including components like the crankcase and oil system for specific engine types.
5-Cylinder Diesel Engine In-Car Repair Steps
This image sequence illustrates the steps involved in disassembling parts of a 5-cylinder diesel engine while still in the vehicle. Procedures shown include unscrewing bolts, removing the crankcase ventilation duct, extracting the oil pickup tube, and detaching the O-ring from the oil pump. These detailed visuals aid in precise component removal and reassembly, ensuring proper maintenance and repair.
- Crankcase ventilation duct removal
- Oil pickup tube extraction
- O-ring removal from oil pump
- Detailed steps for in-car engine component servicing
Electrical System and Wiring Diagrams
Understanding the vehicle's electrical system is crucial for diagnosing and repairing electrical faults. This section provides detailed wiring diagrams and explanations of key electrical components and circuits.
Typical Starting, Charging, and Horn Wiring
This wiring diagram illustrates the electrical connections for the starting, charging, and dual tone horn systems in the Audi 100/A6. It includes components such as the battery, starter motor, alternator, ignition switch, and various relays. The diagram uses standard electrical symbols and color codes to facilitate troubleshooting and repair of electrical circuits, providing a clear visual guide for electrical diagnostics.
- Battery and charging system connections
- Starter motor and ignition switch wiring
- Dual tone horn circuit and components
- Interpretation of wiring diagram symbols and color codes
Technical Specifications
This section provides detailed technical specifications for various components and systems of the Audi 100 and A6 models, including fluid capacities, torque settings, and dimensions. These specifications are critical for accurate maintenance and repair procedures.
Petrol Model Servicing Specifications Overview
This image displays a table of servicing specifications for petrol models, including capacities for engine oil, cooling system, and transmission fluids. It also lists ignition system details (spark plugs, electrode gap), brake specifications (pad minimum thickness), auxiliary drivebelt deflection, and critical torque wrench settings for various components like the alternator, tensioner, and wheel bolts. These specifications are vital for accurate maintenance and repair.
| Category | Item | Specification |
|---|---|---|
| Capacities | Engine oil (4-cylinder) | 3.0 litres |
| Cooling system (4-cylinder) | 7.0 litres | |
| Brakes | Front brake pad minimum thickness | 2.0 mm |
| Torque Wrench Settings | Alternator mounting bolt | 20 Nm |
Troubleshooting and Fault Finding
This section provides guidance on diagnosing common issues and identifying potential faults based on symptoms. It includes a fault finder to assist in pinpointing the cause of various operational problems.
For complex or persistent issues, consulting a qualified automotive technician is highly recommended to ensure proper diagnosis and repair.
Support and Additional Resources
For further assistance, genuine Audi parts, or general inquiries, please refer to the following resources:
- Official Audi Owner's Resources: Access to official service information, recalls, and dealer locator.
- Haynes Manuals Official Website: For additional manuals and technical support related to Haynes publications.
This manual serves as a comprehensive guide for maintenance and repair, but it does not replace the need for professional expertise when required.
