🏷️ Basic Information Identification Make: Citroën Model: GS / GSA Year: 1974 Codes Chassis Code: AY Engine Code Range: G129, G130, G133, G134 👋 Introduction Market Position Positioning: An indispensable resource for owners and independent mechanics seeking to maintain and repair the innovative Citroën GS/GSA. Competitive Analysis Advantage: Provides factory-level information, crucial for diagnosing and repairing the unique hydropneumatic suspension and front-wheel-drive layout of the GS/GSA, often surpassing generic repair manuals. Key Features Features: Comprehensive coverage, detailed diagrams, step-by-step procedures, troubleshooting guides, factory-level accuracy, digital convenience. 📋 Manual Details Coverage Areas Models Covered: All GS and GSA models (including various engine and trim levels) Years Covered: Primarily focused on 1974, but relevant to the entire GS/GSA production run (1970-1986) with specific emphasis on early models. Page Count Estimated Pages: Hundreds (as per description, precise number not specified) Manual Type Type: Workshop Repair Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Service Repair: Comprehensive overhaul, component testing, adjustments, cylinder head, pistons, crankshaft, camshaft, timing, lubrication system. Transmission Service Repair: Manual and automatic transmission servicing, removal, disassembly, assembly, adjustments, fluid specifications, clutch operation. Brake System: Hydraulic system, disc brakes (front), drum brakes (rear), parking brake, hydraulic fluid specifications, bleeding procedures, component replacement. Wiring Diagram: Detailed electrical schematics for all vehicle systems, including lighting, ignition, charging, instruments, and accessories. Electrical System: Starter motor, alternator, battery, ignition system, lighting circuits, instruments, dashboard, fuse box, common electrical faults and troubleshooting. Suspension: Hydropneumatic suspension system (Hydractive), front and rear suspension components, shock absorbers, spheres, anti-roll bars, wheel alignment. Steering: Rack and pinion steering system, steering column, universal joints, tie rod ends, power steering (if equipped), steering geometry. Cooling System: Radiator, fan, thermostat, water pump, coolant specifications, hoses, system pressure testing, troubleshooting leaks. Fuel Injection Fuel System: Carburetor (various types like Solex, Weber) or early fuel injection systems, fuel pump, fuel filter, fuel tank, fuel lines, troubleshooting fuel delivery. Emission System: Emission control components (if applicable for the era and market), PCV system, catalytic converter (later models), troubleshooting emission-related issues. Heater Air Conditional: HVAC system operation, heater core, blower motor, controls, air conditioning system (if equipped). Engine Control System: Ignition timing, carburetor adjustments, basic engine control unit (if fitted), diagnostic procedures for engine performance. Chassis Body: Body construction, chassis components, rust prevention, panel repair, door mechanisms, hinges, latches, glass replacement, underbody protection. Restraint System: Seat belts, anchorage points, safety features as per 1974 standards. Interior: Dashboard removal and repair, instrument panel, seats, upholstery, trim panels, headliner, carpeting. Differential Drive: Front-wheel drive system, gearbox integration, CV joints, driveshafts, lubrication. Axle: Front axle assembly, wheel bearings, hub assembly. Procedures Included Maintenance: General maintenance, periodic lubrication, fluid checks and changes, filter replacements, tune-up procedures. Troubleshooting: Systematic diagnostic procedures for common and complex faults across all vehicle systems. Repair: Step-by-step repair instructions for virtually all mechanical and electrical components. Diagnostics: Detailed diagnostic routines, symptom-based troubleshooting guides, electrical system diagnostics. Disassembly Assembly: Complete instructions for removing, disassembling, cleaning, inspecting, and reassembling components. Installation: Guidance on installing new or reconditioned parts correctly. Technical Depth Depth: Professional technician level, covering everything from basic maintenance to complete engine and transmission rebuilds, including advanced diagnostics. Detail Level: Highly detailed, with substeps, notes, cautions, warnings, and numbered instructions. Visual Aids: Hundreds of detailed illustrations, drawings, and photos, with enlarged insets for specific part examination. 📊 Manual Specifications File Format Format: PDF Compatibility: All versions of Windows & Mac Requirements: Adobe PDF Reader & WinZip Print Quality Printability: Full Printable Zoom Functionality: Zoom IN/OUT enabled Binding Type Binding: Digital Download (Printable) Paper Type Paper: N/A (Digital Format) Delivery Delivery Method: Instant Download ⚙️ Engine Specifications Primary Engine Engine Type: Air-cooled, flat-four (boxer) engine Displacement 1974: 1124 cc (1.1 L) Performance Horsepower 1974: Approx. 55-60 bhp (varies by tune) Fuel System Fuel Delivery: Typically downdraft twin-choke Solex carburetor (e.g., Solex 32 DIDTA) Ignition System Ignition Type: Distributor-based ignition system Cooling System Cooling Method: Air-cooled Lubrication Oil Type Recommendation: Multi-viscosity oil, e.g., 20W-50 or 10W-40 (refer to manual for specific API service classification) 🔧 Transmission Standard Transmission Type Standard: 4-speed manual transaxle Optional Transmission Type Optional: 3-speed semi-automatic (Citroën 'Reflex' or C.A.R. type) Features Drive Layout: Front-wheel drive with integrated engine and transaxle Fluid Specifications Gearbox Oil Type: API GL-4 hypoid gear oil (e.g., SAE 75W-90 or 80W-90) 📐 Dimensions Exterior Wheelbase: Approx. 2550 mm (100.4 in) Length: Approx. 4050 mm (159.4 in) Width: Approx. 1630 mm (64.2 in) Height: Approx. 1340 mm (52.8 in) Weights Curb Weight: Approx. 950-1050 kg (2094-2315 lbs) depending on trim and equipment 🛡️ Safety Features Ratings Safety Features Era: Seat belts (front standard, rear optional), collapsible steering column, reinforced safety cage, dual-circuit braking system. Active Features Active Safety: Excellent road holding due to hydropneumatic suspension and low center of gravity. Passive Features Passive Safety: Impact-absorbing body structure,...