Jaguar XK120 1948-1954 Workshop Service Manual for Repair

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Type: Car

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Sku: 157312

Tags: 1948 1949 1950 1951 1952 1953 1954 Car Cars Jaguar Parts Catalogue XK120

Product variants

Description

The Jaguar XK120, produced from 1948 to 1954, stands as an iconic British sports car, celebrated for its pioneering performance and elegant, aerodynamic design. Available in Open Two-Seater Sports, Fixed Head Coupe (FHC), and Drop Head Coupe (DHC) body styles, this vehicle achieved speeds exceeding 120 mph in standard tune, setting new benchmarks for its era. Its powerful 3442 cc inline 6-cylinder DOHC engine, paired with a 4-speed manual transmission, delivered exhilarating performance that captivated enthusiasts and cemented its reputation as one of the most beautiful cars ever created, making it a highly collectible automotive legend. This comprehensive 457-page workshop service manual provides in-depth guidance for the Jaguar XK120, covering all essential maintenance, repair, and troubleshooting procedures. It details engine overhauls, transmission service, suspension and steering system maintenance, brake system repairs, and electrical system diagnostics, along with body and chassis work. The manual also includes critical technical specifications, fluid recommendations, and safety guidelines, offering invaluable support for owners, mechanics, and technicians to ensure the optimal performance and longevity of this classic vehicle.

🏷️ Basic Information

Identification

Make:

Jaguar

Model:

XK120

Model Designation:

XK120

Body Styles:

Open Two-Seater Sports, Fixed Head Coupe (FHC), Drop Head Coupe (DHC)

Generation

Generation Code:

XK120

Codes

Chassis Codes:

XK120, XK120 Fixed Head Coupe, XK120 Drop Head Coupe

👋 Introduction

Market Position

Positioning:

Iconic British sports car of the post-war era, renowned for its performance and style.

Competitive Analysis

Competitors:

Alfa Romeo 6C, Ferrari 166 Inter, Aston Martin DB2

Key Features

Design:

Aerodynamic and elegant styling, often considered one of the most beautiful cars ever made.

Performance:

Pioneering speeds for its time, achieving over 120 mph in standard tune.

Manual Utility:

Essential resource for owners and mechanics undertaking maintenance, repair, or restoration.

📋 Manual Details

Coverage Areas

Primary Coverage:

Jaguar XK120 (1948-1954)

Page Count

Total Pages:

Manual Type

Type:

Workshop Service Manual / Repair Manual

Language

Primary Language:

English

Format

File Format:

Download Method:

Instant Download

📖 Manual Coverage

Systems Covered

Engine:

Complete overhaul, tuning, lubrication, cooling system, fuel system, ignition system

Transmission:

Manual gearbox service, clutch assembly, driveshafts

Suspension:

Front and rear suspension, steering system, shock absorbers

Brakes:

Hydraulic brake system, front and rear brake drums, master cylinder, wheel cylinders, parking brake

Electrical:

Wiring diagrams, lighting system, starting and charging system, instruments, ignition system

Body And Chassis:

Frame inspection and repair, body panel removal and installation, doors, windows, convertible top

Procedures Included

Maintenance:

Regular servicing, lubrication schedules, fluid checks and changes

Troubleshooting:

Diagnostic procedures for common faults and issues

Repair:

Detailed step-by-step repair instructions for all major components

Disassembly Assembly:

Comprehensive guides for taking apart and reassembling vehicle systems

Adjustments:

Carburetor tuning, ignition timing, brake adjustments, suspension alignment

Technical Depth

Depth:

Comprehensive, from basic maintenance to detailed component rebuilds and diagnostics

📊 Manual Specifications

File Format

PDF Quality:

High resolution, printable

Print Quality

Printable:

Yes, all pages printable

Readability:

Clear text and images, zoomable

Binding Type

Binding:

N/A (Digital PDF)

Paper Type

Paper:

N/A (Digital PDF)

Compatibility

Operating Systems:

Windows, Mac, Linux OS

Required Software:

Adobe Reader

⚙️ Engine Specifications

Primary Engine

Engine Type:

Inline 6-Cylinder, DOHC (Double Overhead Camshaft)

Engine Displacement:

3442 cc (211.4 cu in)

Bore X Stroke:

83 mm x 106 mm (3.27 in x 4.17 in)

Performance

Horsepower Est:

160 bhp @ 5200 rpm (standard tune)

Torque Est:

200 lb-ft @ 3500 rpm (approximate)

Fuel System

Carburetion:

2 x SU H4 Carburetors

Fuel Type:

Premium Unleaded Gasoline (historically, leaded gasoline)

Lubrication

Oil Capacity With Filter:

7 US quarts (6.6 Liters)

Cooling System

Coolant Capacity:

Approximately 12 US quarts (11.3 Liters)

🔧 Transmission

Standard

Type:

4-Speed Manual Synchromesh

Optional

Options:

N/A for the standard XK120; later models might have had minor updates.

Features

Clutch:

Single Dry Plate

Fluid Specifications

Gearbox Oil Type:

GL-4 Hypoid Gear Oil (e.g., SAE 90)

📐 Dimensions

Exterior

Wheelbase:

2540 mm (100 inches)

Overall Length:

3962 mm (156 inches)

Overall Width:

1613 mm (63.5 inches)

Overall Height:

1232 mm (48.5 inches) (approx. for Roadster)

Weights

Curb Weight Est:

1180 - 1270 kg (2600 - 2800 lbs) depending on body style

Gross Vehicle Weight Rating:

N/A (Typically not specified for this era)

🛡️ Safety Features

Ratings

Crash Test Ratings:

Not applicable for this era of vehicle.

Active Features

Braking System:

Hydraulic drum brakes on all four wheels.

Steering:

Worm and roller steering system.

Passive Features

Seat Belts:

Not standard equipment; often added as an aftermarket modification.

Airbags:

Not available.

Manual Warnings

Cautionary Notes:

Numerous cautions and warnings for safe operation, tool usage, and component handling are highlighted throughout the manual.

💡 Technology Features

Infotainment

Audio System:

Original radios (if fitted) were typically AM band; most modern restorations feature period-correct or upgraded systems.

Driver Assistance

Features:

None by modern standards. Focus is on driver control and mechanical feedback.

Connectivity

Features:

Not applicable.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Recommended every 3,000 miles or 6 months (consult manual for exact schedule).

Grease Points:

Regular greasing of chassis lubrication points as per periodic maintenance chart.

Fluid Specifications

Engine Oil Type:

Multi-viscosity oil (e.g., SAE 20W-50 or 20W-60 for classic engines, verify current recommendations).

Coolant Type:

Water/Antifreeze mixture (e.g., 50/50) with corrosion inhibitors suitable for classic vehicles.

Brake Fluid Type:

DOT 3 or DOT 4 Hydraulic Brake Fluid (ensure compatibility with older seals).

Chassis Grease:

High-temperature chassis grease.

Known Issues

Common Wear Items:

Kingpins, bushings, brake components, clutch wear, radiator leaks.

Engine Reliability:

The XK engine is robust but requires diligent maintenance and correct oil viscosity.

Electrical Reliability:

Original wiring can degrade; maintenance of the charging system is crucial.

Manual Recommendations

Part Replacement:

Emphasis on using correct OEM fasteners and replacing sealing components during repairs.

Tool Usage:

Strict adherence to using correct special service tools and calibrated precision instruments.

📚 Vehicle History

Brand Heritage

Jaguar Legacy:

Jaguar Cars Limited, founded by Sir William Lyons, built a reputation for performance and luxury sports cars.

Model Evolution

Xk120 Introduction:

Unveiled at the 1948 London Motor Show as a concept car to showcase the new XK engine.

Xk120 Success:

Massive public demand led to production, becoming Jaguar's first post-war sports car.

Variants:

Initial 'Supersports' open two-seater, followed by the Fixed Head Coupe and Drop Head Coupe.

Competition Heritage:

Successful in racing, including Le Mans 24 Hours, Mille Miglia, and Carrera Panamericana.

Production

Production Years:

1948-1954

Production Numbers Total:

Approximately 12,055 units

Manufacturing Location:

Coventry, England

🏆 Awards & Recognition

Recognitions

Collectible Status:

Highly collectible and sought-after by classic car enthusiasts and collectors worldwide.

Ratings

Classic Car Value:

Consistently ranks as a desirable classic for its aesthetics, performance, and historical significance.

Certifications

Historic Vehicle Status:

Eligible for historic vehicle registration and events in many regions.