Target Audience:
Primarily professional technicians, but also suitable for experienced DIY mechanics with a foundational understanding of automotive systems. Emphasizes detailed, factory-level procedures.
Content Advantage:
Provides the same comprehensive data found in original factory service manuals, including step-by-step repair instructions, critical specifications, detailed illustrations, and troubleshooting guides, enabling users to perform maintenance and repairs like factory-trained technicians.
Manual Coverage:
Comprehensive mechanical and electrical repair, maintenance, diagnostics, and troubleshooting for the 1975 Alfa Romeo Alfetta.
Estimated Page Count:
Likely between 500-800 pages, typical for a factory-level service manual of this era.
Manual Type:
Factory Service Manual / Repair Manual
Engine Systems:
Engine mechanical (including disassembly, assembly, timing, valve adjustments), lubrication, cooling, fuel delivery (carburetor tuning, fuel pumps), ignition, emissions control.
Drivetrain Systems:
Clutch, gearbox (manual transmission), transaxle, driveshafts, differential, axle components, clutch hydraulic system.
Suspension Steering:
Front and rear suspension (transaxle layout specific details), steering system, power steering (if equipped), wheel alignment specifications.
Braking Systems:
Hydraulic brake system, disc brakes (front and rear), brake fluid specifications, bleeding procedures, parking brake.
Electrical Systems:
Wiring diagrams, starter, alternator, battery, lighting system, ignition system, instrumentation, fuse box layout, diagnostic information.
Body Chassis:
Body panel removal/installation, door mechanisms, interior trim, glass, bumpers, chassis components, rust prevention.
Maintenance Procedures:
Scheduled maintenance tasks, oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, tune-up procedures.
Repair Procedures:
Step-by-step instructions for component disassembly, cleaning, inspection, repair, assembly, and reinstallation.
Troubleshooting:
Diagnostic charts and procedures for identifying and resolving common mechanical and electrical issues.
Technical Specifications:
Detailed torque specifications, clearances, wear limits, and adjustment procedures for all major components.
Depth:
Factory-level detail, suitable for professional technicians and advanced DIY enthusiasts. Covers complete engine rebuilds, transmission overhauls, and in-depth electrical diagnostics.
File Format Details:
PDF, Adobe Acrobat Reader required. Optimized for digital viewing and printing.
Printability:
Full Printable. High resolution allows for clear printing of all text and diagrams.
Zoom Capability:
Zoom IN/OUT enabled for detailed viewing of illustrations and schematics.
Delivery Method:
Instant Download
Operating Systems:
Compatible with All Versions of Windows & Mac operating systems.
Engine Type:
Inline 4-cylinder, DOHC (Double Overhead Camshaft)
Engine Displacement Liters:
1.8L (1779 cc) and 2.0L (1962 cc) variants were common for the initial Alfetta models, including the 1975 model year.
Engine Bore Stroke:
1.8L: 80.0 mm x 88.5 mm; 2.0L: 84.5 mm x 88.5 mm
Engine Horsepower Ps:
1.8L: Approx. 122 PS (120 hp); 2.0L: Approx. 130 PS (128 hp)
Engine Torque Nm:
1.8L: Approx. 160 Nm (118 lb-ft); 2.0L: Approx. 170 Nm (125 lb-ft)
Fuel Delivery:
Typically equipped with twin downdraft Weber or Dell'Orto carburetors (e.g., 40 DCNF or 40 DHLA).
Fuel Type:
Unleaded Gasoline (premium recommended)
Ignition Type:
Distributor-based ignition system, typically with breaker points and condenser or early electronic ignition.
Transmission Type Standard:
5-speed manual transaxle
Transmission Type Optional:
Some early models may have been available with an automatic transmission, though manual was standard and preferred.
Transaxle Layout:
Rear-mounted transaxle, combining gearbox and differential for near-perfect weight distribution.
Wheelbase Mm:
Approx. 2510 mm (98.8 in)
Length Mm:
Approx. 4240 mm (167 in)
Width Mm:
Approx. 1670 mm (65.7 in)
Height Mm:
Approx. 1360 mm (53.5 in)
Curb Weight Kg:
Approx. 1150-1250 kg (2535-2755 lbs) depending on engine and equipment.
Front Rear Weight Distribution:
Near 50/50 due to rear transaxle design, contributing to exceptional handling.
Braking System Design:
Four-wheel Dunlop disc brakes, often with a dual-circuit hydraulic system for safety.
Suspension Design:
Independent front suspension (often trailing arms or MacPherson struts), De Dion rear axle with Watts linkage, providing excellent roadholding and stability.
Body Construction:
Unitary body construction with integrated crumple zones, though passive safety standards of the era were less stringent than modern vehicles.
Infotainment System:
Basic analog instrumentation: speedometer, tachometer, fuel gauge, oil pressure gauge, temperature gauge. Likely an AM/FM radio with a single speaker.
Driver Assistance Features:
None in the modern sense. Driver aids would be limited to the inherent handling characteristics and reliable braking system of the era.
Oil Change Interval Km:
Typically every 5,000 - 7,500 km (3,000 - 5,000 miles) or 6-12 months, depending on usage and oil quality.
Tune Up Interval Km:
Spark plug replacement, ignition timing, and carburetor adjustments typically recommended every 15,000 - 20,000 km (10,000 - 12,000 miles).
Engine Oil Type:
API SF or SG classification, SAE 20W-50 or 10W-40 depending on climate. Consult manual for specific viscosity recommendations.
Coolant Type:
Ethylene glycol-based antifreeze, mixed with distilled water (50/50 ratio). Protects against freezing and corrosion.
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid.
Transmission Fluid Type:
GL-4 gear oil, SAE 75W-90 or 80W-90. Specific capacity noted in manual.
Differential Fluid Type:
GL-4 or GL-5 gear oil, SAE 75W-90 or 80W-90. Specific capacity noted in manual.
Rust Prone Areas:
Wheel arches, sills, door bottoms, and floor pans are common areas for rust due to age and climate.
Engine Wear:
Valve stem seals and piston rings can wear, leading to oil consumption and smoke. Camshaft and timing belt (or chain) inspection/replacement is crucial.
Carburetor Issues:
Weber/Dell'Orto carburetors require regular tuning and rebuilds due to wear and potential fuel contamination. Synchronization of twin carbs is critical.
Electrical Gremlins:
Aging wiring harnesses, corroded connections, and failing relays are common issues that can lead to intermittent problems.
Suspension Wear:
Bushings, ball joints, and shock absorbers can wear out over time, affecting ride quality and handling.
Manufacturer Philosophy:
Alfa Romeo is renowned for its sporty driving dynamics, stylish Italian design, and motorsport heritage. The Alfetta embodied these principles.
Alfetta Introduction:
The Alfetta (Tipo 116) was introduced in 1972 as a mid-size executive sports sedan, replacing the aging Giulia sedan. It featured a groundbreaking rear transaxle layout and a sophisticated engine.
1975 Model Year Significance:
The 1975 model year represents an early iteration of the Alfetta, likely featuring the initial 1.8L and 2.0L engines and embodying the car's original design and engineering ethos.
Production Period:
The Alfetta range was produced from 1972 to 1984.
Manufacturing Location:
Produced at Alfa Romeo's facilities in Italy.
