Audi 70, 75, 80 & Super 90 1966–1972 Workshop Manual | PDF Download

Maintain, repair and restore your classic Audi with this detailed Workshop Manual. This English-language PDF covers servicing, mechanical repairs, dismantling and reassembly, with technical specifications, workshop adjustments, fault diagnosis and wiring diagrams.

Models covered:

• Auto Union Audi 70 — 1966–1969
• Auto Union Audi 70L — 1967–1969
• Auto Union Audi Variant 80 — 1966–1969
• Auto Union Audi Variant 75 — 1969
• Auto Union Audi Super 90 — 1966–1969
• Audi NSU Audi Variant 75 — 1970–1972

Engine coverage:

• Four-cylinder petrol engines fitted to the Audi 70, 75/80 and Super 90 versions
• Engine dismantling and reassembly, including cylinder head servicing and valve timing
• Pistons, piston rings, connecting rods, crankshaft and bearings
• Camshaft, timing chain and tensioner
• Oil pump, oil-pressure relief valve and crankshaft oil seals
• Engine tolerances, clearances, compression ratios and torque settings

The fuel system section covers Solex single-barrel and twin-barrel carburettors, including removal, overhaul, jet specifications, float settings, choke adjustment and idle-mixture adjustment. Specific information is included for the Super 90’s Solex 32/32 DIDTA carburettor, alongside mechanical fuel pump servicing and fuel-system fault diagnosis.

Workshop coverage extends to the ignition and cooling systems, clutch, four-speed manual transmission, differential and final drive. Procedures include gearbox overhaul, synchromesh assemblies, gear-change linkage adjustments, differential shimming and crown wheel and pinion settings.

The manual also covers drive shafts, front suspension, rear axle components, wheel bearings and rack-and-pinion steering. Brake servicing includes front discs, rear drums, the master cylinder, vacuum servo, hydraulic bleeding and handbrake adjustment.

Electrical information includes battery maintenance, alternator and starter motor servicing, instruments, switches, fuses and fault diagnosis. Wiring diagrams cover different chassis-number ranges and production changes, with separate Super 90 diagrams for applicable left-hand-drive and right-hand-drive vehicles.

Bodywork and interior sections cover doors, locks, window mechanisms, glass replacement, trim and heater controls. Technical specifications throughout the manual provide the clearances, settings, capacities and tightening information needed for workshop repairs.

Supplied as a PDF download, this manual is a practical reference for classic Audi owners, professional technicians, home mechanics and restoration enthusiasts.