🏷️ Basic Information

Make:

Audi

Model:

80

Model Generation:

B4 (Typ 8C)

Model Years Covered By Manual:

1992, 1993, 1994, 1995, 1996, 1997

Vehicle Generation Code:

Typ 8C (B4)

Transmission Codes:

CGR, CRB (01E)

Drivetrain Configuration:

All-Wheel Drive (Quattro)

👋 Introduction

Target Audience:

Audi 80 B4 owners and independent repair shops specializing in Audi vehicles, particularly those requiring in-depth transmission service on the 01E 6-speed gearbox.

Manual Value Proposition:

Provides specialized, in-depth coverage for a specific, complex transmission (01E 6-speed AWD) that might be less detailed in more generalized manuals. Crucial for maintaining the performance and longevity of these premium German drivelines.

Manual Distinctive Features:

Focus on the robust 6-speed 01E gearbox, including detailed diagrams, troubleshooting guides, and specific procedures for AWD variants. Essential for enthusiasts and professionals working on performance-oriented Audi models of this era.

📋 Manual Details

Manual Coverage Scope:

Gearbox/Transmission

Manual Specialization:

Highly specialized for the 01E 6-speed manual transmission used in Audi Quattro vehicles of this era, offering depth not found in general vehicle repair manuals.

Estimated Page Count:

Detailed coverage suggests a comprehensive manual, likely exceeding 200 pages, though an exact count is not provided in the product information.

Manual Type:

Workshop Service Repair Manual

Language:

English (Assumed based on common automotive manual localization, but not explicitly stated.)

Format:

Likely Digital (PDF) or Printed Booklet. Product description does not specify, but workshop manuals are commonly distributed in both formats.

📖 Manual Coverage

Gearbox Systems:

Clutch Assembly, Transmission Controls (Shifting Mechanisms, Linkages), Gearbox Housing (Case, Seals, Bearings), Gear Sets (Internal Gear Pairs, Synchromesh), Shafts (Input, Output, Intermediate), Final Drive Unit, Differential Assembly (Center and Rear differentials for AWD variants).

Transmission Control Mechanisms:

Covers the inspection and adjustment of the gear shift cables, selector forks, and interlock mechanisms to ensure proper gear engagement and prevent accidental shifts.

Final Drive And Differential Service:

Details on the maintenance and repair of the integrated final drive and the center differential mechanism, including lubrication, bearing adjustments, and seal replacements specific to the quattro system.

Repair And Maintenance Procedures:

Disassembly and Reassembly of gearbox, clutch service (replacement, adjustment), gear engagement troubleshooting, bearing replacement, seal replacement, final drive servicing, differential repair, torque specifications for assembly, diagnostic procedures for common faults, fluid change recommendations.

Clutch Replacement Procedure:

Detailed instructions for clutch disc, pressure plate, and release bearing replacement, including flywheel inspection and resurfacing recommendations. Torque sequences for clutch cover bolts are also provided.

Torque Specifications Importance:

Crucially provides precise torque specifications for all internal gearbox fasteners, bearing caps, and housing bolts, which are vital for correct assembly and long-term durability.

Diagnostic And Repair Depth:

Comprehensive. Covers internal gearbox component replacement, overhaul, and troubleshooting for the specific 6-speed 01E transmission. Suitable for professional mechanics and advanced DIY enthusiasts.

Gearbox Overhaul Procedures:

Comprehensive instructions for a complete gearbox overhaul, including removal, disassembly, cleaning, inspection of all internal components (gears, synchros, shafts, bearings), and reassembly with specified torque values and clearances.

Specification Detail:

Includes detailed technical specifications such as gear ratios, bearing clearances, end play tolerances, and backlash specifications for the final drive and differential.

Diagnostic Procedures:

Includes step-by-step diagnostic guides for common transmission issues, symptom-based troubleshooting trees, and specific tests for clutch operation, gear selection, and driveline noise.

📊 Manual Specifications

Digital File Format Potential:

PDF (if digital). Typically optimized for searchability and ease of printing specific sections.

Printed Manual Quality Potential:

Professional print quality with clear diagrams and text (if printed). Paper type would likely be durable to withstand workshop use.

Printed Manual Binding Potential:

Spiral-bound or perfect-bound for ease of use on a workbench. Comb binding is also common for workshop manuals.

Printed Manual Paper Type Potential:

Durable, semi-gloss paper to resist grease and oil contamination in a workshop environment.

Technical Diagrams Illustrations:

Workshop manuals of this caliber are characterized by detailed exploded diagrams, line drawings, and schematics that are essential for understanding the complex internal workings of the 01E gearbox.

⚙️ Engine Specifications

Engine Fitment Context:

While this manual focuses on the transmission, the 01E 6-speed gearbox was commonly paired with Audi's 5-valve per cylinder inline 4-cylinder (e.g., ABK, ADR) and V6 engines (e.g., AAH, ACE) in the Audi 80 B4 Quattro models. Engine displacements ranged from 2.0L to 2.8L.

Engine Examples Paired With 01E:

Audi 80 B4 Quattro models often featured the 2.6L V6 (ABC engine) or 2.8L V6 (AAH, ACE engines), as well as performance-oriented 2.0L 16V engines. The 01E was designed to handle the higher torque outputs of these engines.

Typical Engine Output:

Engines typically produced between 100 hp (2.0L) and 174 hp (2.8L V6), with torque figures correlating to displacement and configuration. The 01E transmission was designed to handle this output.

Engine Fueling System:

Primarily Electronic Fuel Injection (EFI) with multi-point injection systems.

🔧 Transmission

Transmission Type Standard:

6-Speed Manual Transmission

Transmission Type Optional:

This manual specifically covers the 01E 6-speed manual transmission. Other transmissions may have been available on the Audi 80 platform (e.g., 5-speed manuals, automatic transmissions), but are not the focus of this particular document.

Transmission Key Features:

Audi's robust 01E gearbox, known for its durability and suitability for performance applications. Features a compact design, helical gears, and a robust casing. The 6th gear provides lower cruising RPMs for improved fuel economy and reduced engine wear on the highway.

01E Gearbox Design Elements:

The 01E is an evolution of Audi's manual gearbox design, featuring a robust aluminum housing, multi-cone synchromesh for smoother shifting, and a design that integrates the center differential for the quattro system. The gear ratios are typically optimized for a balance of acceleration and highway cruising.

📐 Dimensions

Vehicle Body Styles:

The Audi 80 B4 platform was available in various body styles including Sedan (Saloon), Avant (Wagon), and Coupé (though the Coupé variant might have had slightly different transmission options).

Cabin Layout:

Typical European compact executive car layout, seating 4-5 occupants. Focus on driver-centric ergonomics.

Luggage Capacity:

Varies by body style (Sedan vs. Avant), with the Avant offering significantly more cargo space.

Curb Weight Range:

Curb weights for Quattro models equipped with the 01E transmission typically ranged from approximately 1350 kg to 1500 kg, depending on engine and body style.

🛡️ Safety Features

Historical Safety Evaluation:

While formal crash test ratings from organizations like NHTSA or Euro NCAP in their current comprehensive format were less common for this era, Audi prioritized safety with features available at the time. The B4 platform was considered a solid structure.

Available Active Safety Features:

Anti-lock Braking System (ABS) was a common option, especially on higher-spec Quattro models. Standard braking systems featured disc brakes all around.

Available Passive Safety Features:

Occupant protection included seatbelts, reinforced body structure, and potentially driver/passenger airbags on later models or higher trims.

💡 Technology Features

Available Infotainment Systems:

Infotainment systems from this era were basic, typically comprising of an AM/FM radio, cassette player, and possibly an optional CD player. Later models might have had more integrated head units but lacked modern features like Bluetooth or touchscreens.

Driver Assistance Features:

Limited by the era. ABS was the primary active safety system. No electronic stability control or advanced driver-assistance systems (ADAS) were available.

Connectivity Options:

Very basic. Connectivity was limited to audio input via RCA jacks on some aftermarket or higher-spec factory head units, and no form of smartphone integration was available.

🔧 Maintenance

Transmission Fluid Change Interval:

Audi typically recommended transmission fluid changes every 60,000-100,000 km (37,000-62,000 miles) or based on severe driving conditions. Specific intervals for the 01E gearbox are detailed within the workshop manual. Gearbox oil level checks are also critical.

Clutch Inspection Interval:

While not a fixed interval, the manual will provide guidance on when to inspect the clutch for wear, especially if symptoms like slipping or difficulty engaging gears are present. This often coincides with transmission servicing.

Transmission Gear Oil Specification:

The 01E 6-speed transmission typically requires a high-quality GL-4 or GL-5 gear oil (check manual for specific viscosity and API rating, e.g., SAE 75W-90 or 75W-85 synthetic). Capacity is approximately 2.0-2.2 liters. Always verify with the manual or a reliable service information source.

Transmission Oil Capacity 01E:

The 01E 6-speed transmission typically requires approximately 2.0 to 2.2 liters of gear oil. The manual will specify the exact fill level by a specific check plug or level indicator.

Common 01E Gearbox Issues:

Common issues can include worn synchromesh rings leading to difficult gear changes (especially 1st and 2nd), input shaft seal leaks, output shaft seal leaks, and potential wear in the differential bearings. Clutch release bearing noise is also a possibility. The manual will guide diagnosis and repair for these.

📚 Vehicle History

Audi Engineering Philosophy:

Audi's heritage is built on engineering excellence, particularly in quattro all-wheel-drive systems and innovative drivetrain technology. The 01E gearbox represents a continuation of this robust performance engineering.

Audi 80 B4 Development:

The Audi 80 B4 (Typ 8C) generation, produced from 1991 to 1994 (though sales extended into the late 90s in some markets), was a significant update from its predecessor, featuring improved aerodynamics, a larger interior, and more modern styling. It was the precursor to the Audi A4.

Platform Transition:

The Audi 80 B4 served as the foundation for the first-generation Audi A4 (B5), launched in 1994. This manual covers the later years of the B4 platform, which shared many engineering principles with the early A4 models.

Production Period B4:

The Audi 80 B4 was primarily produced between 1991 and 1994. Models sold as '1995' or later often represent remaining inventory or specific market continuations of the B4 platform before the full transition to the A4 (B5).

🏆 Awards & Recognition

Model Platform Recognition:

The Audi 80/90 platform (including the B4) was generally well-regarded for its build quality, comfort, and the advanced quattro all-wheel-drive system, which was often praised in contemporary automotive reviews. While specific awards for the transmission are unlikely, its inclusion in performance variants contributed to the model's positive reception.