🏷️ Basic Information

Make:

Citroën

Model:

LNA

Year:

1975-1985

Engine:

625cc

👋 Introduction

Target Audience:

Owners with basic mechanical skills and independent auto service professionals.

Value Proposition:

Provides the same technical information as authorized dealer service departments, empowering owners to be better informed and communicate effectively with technicians.

Advantage Over Dealerships:

Cost-effective access to dealer-level information, enabling proactive maintenance and informed repair decisions.

Accessibility:

Instant download, no shipping costs, accessible on multiple devices.

Practicality:

Printable pages, enabling users to keep the manual clean and focused on specific tasks.

Empowerment:

Enables users to diagnose issues, understand repair processes, and communicate effectively with mechanics.

📋 Manual Details

Primary Coverage:

Citroën LNA

Secondary Coverage:

Related models within the PSA Peugeot Citroën Group during that era (potential for shared components/systems).

Estimated Page Count:

High (indicative of comprehensive coverage, typically 500+ pages for a full service manual).

Type:

Service and Repair Manual

Language:

French

Format:

PDF (Digital Download)

📖 Manual Coverage

Engine Service:

Diagnosis, removal, disassembly, inspection, repair, reassembly, and installation of engine components; cylinder head, pistons, connecting rods, crankshaft, camshaft, valves, timing systems, lubrication system, cooling system.

Transmission:

Manual transmission service, clutch system, differential, driveshafts, gear shift linkage.

Chassis:

Frame, suspension components (front and rear), steering system (rack and pinion or steering box), wheel bearings, alignment procedures.

Body:

Body construction, exterior panels, doors, hinges, latches, glass, interior trim, seat adjustments, body repair techniques.

Electrical:

Wiring diagrams, component identification, lighting system, ignition system, starting system, charging system, instrumentation, fuses, relays, switches.

Fuel System:

Fuel tank, fuel pump, fuel lines, carburetor (likely Solex or similar), fuel filter, fuel delivery diagnostics.

Emission Control:

Components related to emission control systems of the era, potential for air injection or catalytic converter details (depending on market).

Induction:

Air intake system, air filter, intake manifold, carburetor tuning.

Mechanical:

General mechanical principles, torque specifications for various fasteners, clearances, and adjustments.

Control System:

Linkages, cables, and actuators for various vehicle functions.

Steering Suspension:

Detailed procedures for steering gear, tie rods, ball joints, shock absorbers, springs, and bushings.

Brakes:

Hydraulic brake system (master cylinder, wheel cylinders, brake lines), brake pads/shoes, drums/discs, parking brake, bleeding procedures, brake fluid specifications.

ABS:

Likely N/A for this model year, but if present on some variants, it would be covered. (Standard for the era, ABS was rare).

General Info:

Vehicle identification, safety precautions, tools and equipment, general maintenance procedures.

Engine Overhauling:

Complete engine rebuild procedures from basic maintenance to full overhaul.

Transmission Service:

Gearbox fluid changes, clutch adjustment and replacement, bearing inspection.

Chassis Maintenance:

Lubrication points, suspension component replacement, wheel alignment checks.

Body Repair:

Panel replacement, rust repair guidance, door mechanism adjustments.

Wiring Tracing:

Step-by-step guidance on tracing electrical circuits with specific terminal pin connections and expected readings.

Fuel System Diagnostics:

Troubleshooting fuel delivery issues, carburetor adjustments and cleaning.

Emission Control Adjustment:

Setting idle speed and mixture for emissions compliance (where applicable).

Induction System Tuning:

Carburetor jetting, float level adjustments, idle speed adjustments.

Mechanical Diagnostics:

Identifying mechanical faults through listening, visual inspection, and measurement.

Control System Adjustment:

Adjusting throttle cables, brake cables, and clutch cables.

Steering Suspension Repair:

Replacement of tie rod ends, ball joints, shock absorbers, and bushings.

Brake System Maintenance:

Brake pad/shoe replacement, rotor/drum inspection, bleeding the brake system.

Troubleshooting:

Systematic approach to diagnosing and fixing common and uncommon vehicle problems with flowcharts and symptom-based guides.

Service Work:

Routine maintenance tasks, scheduled servicing, and preventative care recommendations.

Depth:

Comprehensive, covering basic owner maintenance to full mechanical and electrical system overhauls, suitable for professional mechanics and skilled DIY enthusiasts.

Diagnostic Techniques:

Provides 'secret techniques' for testing suspected parts and understanding engine management systems, indicating a focus on effective troubleshooting.

Wiring Diagrams:

Detailed wiring diagrams with specific terminal pin connections and expected readings, crucial for electrical diagnostics.

Common Fixes:

Offers practical 'common fixes' and 'quick solutions' with diagrams for issues like no-starts, hesitations, and stalling, making it user-friendly for common problems.

Mechanic Guidance:

Empowers users to 'tell your mechanics what to do' and verify their work, enhancing transparency and potentially reducing repair costs.

Preventative Maintenance:

Includes 'practical quick solutions' and 'common tips' to prevent minor issues from escalating, promoting a proactive maintenance approach.

📊 Manual Specifications

Format:

PDF

Compatibility:

PC, Mac, E-readers (Kindle), and many mobile devices.

Searchability:

Likely text-searchable PDF for efficient information retrieval.

File Type:

PDF Document

Printability:

Printable on demand, allowing users to print specific pages to avoid damage to the original document.

Binding:

N/A (Digital product)

Paper Quality:

N/A (Digital product)

⚙️ Engine Specifications

Engine Type:

Inline-twin cylinder, air-cooled (typical for early Citroën LNA variants).

Displacement:

625 cc (as specified).

Bore X Stroke:

Specifics to be found within the manual; common for this size would be around 70mm x 82mm, but requires confirmation.

Compression Ratio:

Typically around 8.5:1 to 9.0:1 for this era and engine type.

Horsepower:

Estimated 30-35 hp (depending on specific tune and year).

Torque:

Estimated 40-45 Nm (depending on specific tune and year).

Carburetor:

Likely a single-barrel downdraft carburetor, such as a Solex 32 PBISA or similar.

Fuel Type:

Unleaded gasoline (if available, otherwise leaded).

Ignition System:

Contact breaker points ignition system with a single coil.

🔧 Transmission

Type:

4-speed manual transmission.

Optional Transmission:

Rarely, some models might have had an automatic option, but the 4-speed manual was dominant.

Clutch:

Single dry plate clutch operated by cable or hydraulic system (likely cable for this model).

Differential:

Integrated within the transaxle unit.

📐 Dimensions

Length:

Approx. 3.40 meters.

Width:

Approx. 1.50 meters.

Height:

Approx. 1.30 meters.

Curb Weight:

Approx. 650-700 kg.

Gross Vehicle Weight:

Approx. 950-1000 kg.

🛡️ Safety Features

Crash Test Results:

Limited data available for this specific model from modern standards; vehicles of this era had basic safety features.

Active Safety:

Hydraulic drum brakes front and rear, effective steering system.

Passive Safety:

Seat belts (likely lap belts as standard), reinforced body structure.

💡 Technology Features

Infotainment System:

Basic AM/FM radio, possibly with a cassette player on later models. No complex digital systems.

Driver Assistance:

N/A. Primarily manual controls and basic instrumentation.

Connectivity Features:

N/A.

🔧 Maintenance

Oil Change Interval:

Typically every 5,000 - 7,500 km or annually.

Tune Up Interval:

Spark plug replacement every 15,000 - 20,000 km; distributor points and condenser service as needed.

Timing Belt Chain:

The LNA likely used a timing chain, which generally does not have a scheduled replacement interval but requires inspection for wear and tension.

Engine Oil Type:

API SF or SG classification, SAE 10W-40 or 20W-50 (depending on climate).

Coolant Type:

Ethylene glycol based antifreeze with corrosion inhibitors, mixed 50/50 with distilled water.

Brake Fluid Type:

DOT 3 or DOT 4 hydraulic brake fluid.

Transmission Oil Type:

GL-4 Hypoid Gear Oil (e.g., SAE 75W-90 or 80W-90).

Common Problems:

Rust (especially sills, wheel arches, floor pans), carburetor issues (gumming up, adjustment), ignition system problems (points, coil), cooling system leaks (if liquid-cooled variant), wear on suspension bushings and ball joints.

📚 Vehicle History

Citroen Innovation:

Citroën's history is marked by innovation in suspension, aerodynamics, and front-wheel drive, though the LNA was a more utilitarian model.

Lna Development:

The LNA was a derivative of the Peugeot 104 and represented a more basic, cost-effective offering in the city car segment, sharing many components with its PSA sibling.

Production Period:

1975-1985.

Manufacturing Location:

Primarily France.