AJS 350 & 500 1949 REVUE TECHNIQUE

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Art.-Nr: 133978

Stichworte: 350 500 AJS Motorcycle

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Beschreibung

This manual provides comprehensive technical data for the 1949 AJS 350 and 500cc motorcycles. AJS, a respected British manufacturer, was known for its robust and sporting machines, and these models embody that heritage. Designed for a variety of uses, from everyday transport to sporting endeavors, these motorcycles represent a significant piece of British engineering history. Their build quality and classic character continue to make them desirable for enthusiasts and collectors alike, with a legacy rooted in competitive racing success. This French-language Revue Technique offers detailed guidance for maintaining and repairing your 1949 AJS 350 or 500cc motorcycle. It covers essential areas including engine overhaul, disassembly, assembly, tuning, and specific component adjustments. The manual also details gearbox maintenance and repair procedures, front fork inspection, and the lubrication plan. For owners, mechanics, and technicians, this document serves as an invaluable resource for understanding the mechanical intricacies, performing necessary adjustments, and ensuring the longevity of these iconic vintage machines.

🏷️ Basic Information

Identification

Make:

Model:

350 & 500

Year:

Codes

Product Type:

Revue Technique (Technical Review)

👋 Introduction

Market Position

Target Audience:

AJS motorcycle owners, restorers, mechanics, and enthusiasts of vintage British motorcycles.

Historical Context:

AJS was a prominent British motorcycle manufacturer known for its robust and sporting machines.

Competitive Analysis

Competitor Manuals:

Competes with other 'Revue Technique' or workshop manuals for similar era British motorcycles from brands like Triumph, Norton, BSA.

Key Features

Manual Value Proposition:

Provides essential technical guidance for maintaining and repairing iconic 1949 AJS models, crucial for preserving these vintage machines.

Language Benefit:

While in French, the technical diagrams and standardized terminology often bridge language barriers for experienced mechanics.

📋 Manual Details

Coverage Areas

Manual Coverage Scope:

Comprehensive technical data for AJS 350 and 500cc models of 1949.

Page Count

Page Count:

Manual Type

Manual Type:

Service / Repair Manual (Revue Technique)

Language

Language:

French

Format

Format:

PDF Scan

📖 Manual Coverage

Systems Covered

Engine Systems:

Engine overhaul, disassembly, assembly, tuning, and specific component adjustments.

Transmission Systems:

Gearbox internal mechanisms, maintenance, and repair procedures.

Suspension Systems:

Front fork (fourche) inspection, maintenance, and overhaul.

Lubrication Systems:

Lubrication plan and service intervals ('Plan de Graissage et Périodicité').

Electrical Systems:

Implicit coverage within general repair and assembly, though not explicitly detailed in the provided snippets.

Braking Systems:

Likely covered under general repair and maintenance sections.

Fuel Systems:

Likely covered under engine tuning and carburetor adjustment sections.

Procedures Included

Adjustment Procedures:

Reglages (Adjustments) covering engine settings and potentially carburetion.

Repair Procedures:

Pièces de Réparation (Repair Parts) and general repair guidance.

Assembly Procedures:

Remontage de Culasse (Cylinder Head Reassembly) is specifically mentioned, indicating detailed assembly steps.

Maintenance Procedures:

Includes lubrication schedules and general maintenance advice.

Technical Depth

Diagnostic Depth:

Focuses on practical repair and adjustment, suggesting a good level of detail for common issues and routine maintenance.

Rebuild Complexity:

Covers engine and gearbox rebuilds, including specific reassembly steps like the cylinder head.

📊 Manual Specifications

File Format

File Type:

Scanned Quality:

Scan quality can vary, but typically good for readability of text and diagrams.

Searchability:

Includes bookmarks and is likely text-searchable if OCR was applied during scanning.

Print Quality

Printability:

PDF format allows for printing of individual pages or the entire document.

Binding Type

Binding Type Physical:

N/A (Digital product)

Paper Type

Paper Type Physical:

N/A (Digital product)

⚙️ Engine Specifications

Primary Engine

Engine Type:

Overhead Valve (OHV) single-cylinder, four-stroke (typical for AJS 350/500cc of this era).

Displacement 350:

Approximately 348cc (e.g., Model 18S).

Displacement 500:

Approximately 498cc (e.g., Model 18CS, Model 7R).

Bore Stroke Approx 350:

e.g., 66.5mm x 99mm (typical).

Bore Stroke Approx 500:

e.g., 82.5mm x 93mm (typical).

Engine Layout:

Vertical twin or single-cylinder depending on specific model variant covered within the 350/500cc range.

Cooling System:

Air-cooled

Performance

Horsepower Approx 350:

Estimated 18-22 bhp at peak RPM.

Horsepower Approx 500:

Estimated 25-30 bhp at peak RPM.

Torque Characteristics:

Designed for strong low-to-mid-range torque, characteristic of British singles of the era.

Fuel System

Carburetor Type:

Typically Amal concentric or Monobloc carburetors, specific model dependent.

Fuel Type:

Leaded gasoline (petrol) of appropriate octane rating for the period.

🔧 Transmission

Standard

Transmission Type:

Constant mesh, foot-change (foot-shifted) gearbox.

Number Of Gears:

Typically 4-speed.

Clutch Type:

Multi-plate, wet clutch, operated by handlebar lever.

Features

Gearbox Design:

Burman-type or AJS proprietary designs were common.

Gear Shifting Mechanism:

Heel-and-toe lever operation for gear changes.

📐 Dimensions

Exterior

Wheelbase Approx:

Typically around 55-57 inches (1397-1448 mm), model dependent.

Seat Height Approx:

Varies by model, typically around 30-32 inches (762-813 mm).

Weights

Dry Weight Approx 350:

Around 350-370 lbs (159-168 kg).

Dry Weight Approx 500:

Around 380-410 lbs (172-186 kg).

🛡️ Safety Features

Ratings

Safety Standards Era:

Safety standards of 1949 were significantly different from modern standards; manual focuses on mechanical integrity and safe operation within its design parameters.

Active Features

Braking System:

Typically drum brakes (front and rear), often single-sided front hub.

Passive Features

Chassis Design:

Rigid frame or basic swinging arm rear suspension for some models.

💡 Technology Features

Infotainment

Infotainment Features:

N/A - No electronic infotainment systems present.

Driver Assistance

Driver Assistance Features:

N/A - No electronic driver assistance features.

Connectivity

Connectivity Features:

N/A - No electronic connectivity features.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Typically every 1,000-1,500 miles (1600-2400 km), or annually.

Decoke Interval:

Recommended every 6,000-10,000 miles (9600-16000 km) for carbon removal from combustion chamber.

Valve Clearance Check:

Regular checks (e.g., every 3,000 miles) as specified in the manual's 'Reglages' section.

Fluid Specifications

Engine Oil Type:

Historically, mineral oils of SAE 20W/50 or SAE 50 were common. Modern equivalents would be recommended, but manual may specify period-correct oils.

Gearbox Oil Type:

EP (Extreme Pressure) gear oil, viscosity grade as per manual (e.g., SAE 90).

Fork Oil Type:

Specific light-grade fork oil or SAE 10W.

Known Issues

Engine Wear Points:

Valve guides, piston rings, and main bearings are common wear areas.

Gearbox Reliability:

Gearbox can be susceptible to false neutrals or wear in selector mechanisms if not maintained.

Electrical System Challenges:

Wiring looms and dynamo charging systems can be primitive by modern standards and require careful maintenance.

Parts Availability

Spare Parts Context:

AJS parts can be scarce and often require specialist suppliers or fabrication for classic models.

📚 Vehicle History

Brand Heritage

Manufacturer Origin:

Associated Motorcycles (AMC) group, manufacturing AJS motorcycles in Plumstead, London, UK.

Ajs Legacy:

AJS was renowned for its sporting heritage, including success in the Isle of Man TT races.

Model Evolution

1949 Era Models:

The 1949 range included models like the 16MS (350cc), 18S/18CS (500cc), and racing variants like the 7R ('Boy Racer').

Production

Production Period:

Post-WWII period, with significant post-war model development.

🏆 Awards & Recognition

Recognitions

Racing Success:

AJS models, particularly the 7R, were highly successful in Grand Prix racing and club events during their era.

Model Popularity:

The 1949 era models are highly sought after by collectors for their build quality and classic British motorcycle character.