Engine Mechanical:
Detailed disassembly, assembly, inspection, and repair of all engine components, including cylinder head, block, pistons, crankshaft, camshaft, valves, and timing systems.
Engine Management And Fuel:
Ignition system, fuel injection (if applicable for the year/model), carburetor systems, fuel pump, fuel lines, and emissions control systems.
Transmission And Drivetrain:
Manual transmission (likely 4- or 5-speed), clutch assembly, driveshafts, differential, and hub assemblies.
Suspension And Steering:
Citroen's signature hydropneumatic suspension system (components, service, fluid changes, pressure regulation), front and rear suspension, steering rack, linkages, and wheel alignment procedures.
Braking System:
Front and rear brake systems (discs or drums depending on variant), hydraulic lines, master cylinder, brake booster, parking brake, and bleeding procedures.
Body And Chassis:
Body panel removal and installation, interior trim, glass, doors, hinges, locks, and structural components.
Heating And Ventilation:
HVAC system components, blower motor, ducting, and controls.
Electrical System Diagnostics:
Comprehensive wiring diagrams, component testing, troubleshooting of lighting, starting system, charging system, ignition, instrumentation, and accessories.
Routine Maintenance:
Oil changes, filter replacements, fluid level checks and top-offs, tire rotation, brake inspection, and general lubrication.
Troubleshooting:
Diagnostic procedures for common drivability issues, electrical faults, suspension problems, and braking concerns, often with symptom-based guides.
Disassembly And Assembly:
Detailed, step-by-step instructions for removing, overhauling, and reinstalling major vehicle components and sub-assemblies.
Reconditioning And Rebuilding:
Procedures for rebuilding engines, transmissions, carburetors, brake calipers, and other worn components.
Torque Specifications:
Crucial torque values for critical fasteners throughout the vehicle, ensuring proper assembly and preventing damage.
Special Tools:
Identification of specific tools required for certain repair procedures, particularly for the hydropneumatic system.
Depth Of Coverage:
Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds, including detailed diagnostics and wiring diagrams.
Engine Type:
Air-cooled, flat-four (boxer) engine.
Engine Displacement:
Typically 1216cc (GS) and 1299cc (GSA), with later potential for 1360cc variants. Specific displacement for 1981 would need to be confirmed within the manual.
Horsepower:
Approx. 56-62 hp for 1.2L, 60-65 hp for 1.3L. Specific output varies by engine variant and tune. Consult manual for precise figures.
Torque:
Approx. 80-90 Nm. Consult manual for precise figures.
Fuel Delivery:
Carburetor (e.g., Solex, Weber) for most 1981 models. Fuel injection was introduced later on some variants or GSA models. Manual will detail the specific system for the covered vehicles.
Engine Oil Change:
Typically every 5,000 - 7,500 km or annually. Consult manual for exact intervals for the 1981 model year.
Hydropneumatic Fluid Change:
Regular fluid checks and changes are crucial for suspension health. Manual will specify intervals, typically every 2 years or 40,000-60,000 km.
Engine Oil Specification:
Likely 20W-50 or 10W-40 API SF or SG classification. Manual will specify exact grade and capacity.
Hydropneumatic Fluid Specification:
Citroën LHS 2 (LHM - Liquide Hydraulique Minéral is for later models, LHS 2 is a mineral oil). Specific type and capacity are critical and detailed in the manual.
Transmission Fluid Specification:
Likely GL-4 gear oil. Manual will specify viscosity and capacity.
Common Wear Items:
Hydropneumatic spheres, suspension lines, brake hoses, clutch wear, carburetor adjustments, aging electrical components, potential rust on body panels.
Air Cooled Engine Considerations:
Proper ventilation and cooling are key. Overheating can be an issue if cooling fins are clogged or air flow is restricted. Manual will detail cooling system checks.
