Opel Ascona A 1970-1975 Workshop Service Repair Manual

Step by Step detailed repair, service, and electrical systems Instructions – This is the Official Workshop Manual published by Opel for the Ascona A. It includes complete coverage for all Ascona A models from 1970 to 1975, providing comprehensive service information used by Opel dealership technicians across Europe.

Official Workshop manual used by Opel Approved Garages

Models: Opel Ascona A (1970-1975) – Approximately 692,000 units produced worldwide. Includes 2-Door Saloon, 4-Door Saloon, Voyage (Estate), and Caravan variants. This vehicle was sold as “Opel 1900” in the United States through Buick dealerships, but retained the Ascona nameplate throughout Europe, including Germany, UK, Netherlands, Belgium, Switzerland, and Scandinavia.

Engines:
1.9L CIH 4-Cylinder (90hp @ 5100rpm) 1970-1975 Standard
1.9L CIH SR (90hp @ 5100rpm) 1970-1975 Sport
1.6L CIH 4-Cylinder (68hp @ 5400rpm) 1970-1975
1.6L CIH S (80hp @ 5400rpm) 1971-1975

Transmissions: 4-Speed Manual (fully synchronized), GM TH-180 3-Speed Automatic

Left and Right hand drive covered

Years: 1970, 1971, 1972, 1973, 1974, 1975

Language: English
Format: PDF
Compatibility: Windows / Mac / Linux / Tablet / Mobile

CONTENTS
General Information: Vehicle identification, lifting points, towing procedures, specifications. Maintenance: Service schedules, fluid capacities, lubrication points. Engine Mechanical: Cylinder head reconditioning, valve adjustments, camshaft timing, CIH engine rebuilding, pistons, crankshaft, oil pump. Engine Electrical: Starting system, charging system, ignition timing. Emission Control: PCV system, EGR valve, evaporative controls. Fuel System: Solex carburetor adjustments, fuel pump, tank and lines. Clutch & Transmission: Clutch replacement and adjustment, manual gearbox overhaul, synchronizer replacement, automatic transmission servicing and band adjustments. Propeller Shaft & Differential: Universal joint rebuilding, rear axle differential overhaul. Steering: Steering gear adjustments, rack service, alignment specifications. Suspension: Front MacPherson strut replacement, rear suspension repairs, geometry settings. Brakes: Disc brake pad replacement, drum brake service, system bleeding, master cylinder, parking brake. Body & Chassis: Panel alignment, rust repair procedures, trim removal, estate-specific tailgate service. Electrical Systems: Dashboard instrumentation, lighting circuits, heating and ventilation. Wiring Diagrams: Complete colour-coded diagrams for all model years and body styles.

Special Features:

• Complete coverage for Saloon, Voyage, and Caravan body styles
• European and US specification differences clearly documented
• Covers both 1.6L and 1.9L CIH engine variants
• Estate/Caravan-specific tailgate and rear wiper procedures
• SR sport model suspension and brake upgrades
• Same factory manual platform as Opel Manta A (shared chassis)

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Frequently Asked Questions

What Opel Ascona models are covered in this workshop manual?
This manual covers all Opel Ascona A (First Generation) variants produced from 1970 to 1975, including the 2-Door Saloon, 4-Door Saloon, Voyage estate, and Caravan variants. It covers vehicles sold throughout Europe under the Ascona nameplate. The same vehicle was marketed as “Opel 1900” in the United States. Total production was approximately 692,000 units worldwide.

What engines and transmissions are covered?
Engine coverage includes the 1.9L CIH producing 90hp (standard and SR variants), the 1.6L CIH producing 68hp, and the 1.6L S producing 80hp. Transmission coverage includes the 4-speed manual gearbox (fully synchronized) and the GM TH-180 3-speed automatic transmission.

Does this manual include wiring diagrams for the Opel Ascona A?
Yes, this workshop manual contains complete colour-coded wiring diagrams for all Ascona A model years and body styles. This includes electrical schematics for saloon and estate variants, lighting circuits, starting and charging systems, dashboard instrumentation, and all electrical accessories.

Is the Opel Ascona A the same as the Opel Manta A?
The Ascona A and Manta A share the same platform, chassis, engines, and mechanical components. The key difference is body style – the Ascona was available as a practical 2-door saloon, 4-door saloon, and estate (Voyage/Caravan), while the Manta was a sportier 2-door coupé. This workshop manual covers the mechanical procedures applicable to both model lines.

What format is this Workshop Manual provided in?
IMPORTANT: This is a PDF manual – a professional OEM Opel workshop format. The PDF runs on all compatible devices including Windows PC, Mac, iPad, iPhone, Android tablets and phones, and Linux computers. You will receive instant access immediately after purchase with no waiting or shipping fees. This is a digital download, not a physical printed book.