Target Audience:
Jaguar Distributors, Dealers, service technicians, and knowledgeable owners or enthusiasts focused on the Mark VII, XK 120, and XK 140 models.
Manual Value Proposition:
Provides the same factory-level, detailed repair and maintenance information used by authorized dealerships, ensuring accuracy and completeness superior to generic repair guides.
Documentation Origin:
Compiled from official Jaguar publications including the Service Manual for Mark VII & XK 120, Jaguar and Lucas Wiring Diagrams, and the Service Manual Supplement for the XK 140 Model.
Organization:
Neatly indexed, searchable, categorized, and well-organized for efficient access to information.
Manual Scope:
Comprehensive service, repair, and workshop information for Jaguar Mark VII and XK 120 models, with a supplement covering variations and technical data for the XK 140 model.
Type:
Factory Service Manual / Repair Manual / Workshop Manual
File Format:
PDF (Download)
Software Requirements:
Adobe PDF Reader, WinZip (for decompression if applicable).
Delivery Method:
Instant Download
Engine:
Detailed engine service, including dismantling, reassembling, and component overhauls for Jaguar's XK inline-six engines.
Fuel System:
Carburetor and fuel system service, tuning, and troubleshooting.
Cooling System:
Radiator, water pump, thermostat, and cooling system maintenance and repair.
Transmission:
Clutch, flywheel, gearbox servicing, and propeller shaft maintenance.
Drivetrain:
Rear axle servicing and maintenance.
Steering:
Steering system diagnosis and repair.
Suspension:
Front and rear suspension systems, including components and adjustments.
Brakes:
Brake system servicing, maintenance, and repair procedures.
Chassis:
Chassis maintenance and repair.
Bodywork:
Coachwork (body) maintenance and repair guidelines.
Electrical:
Comprehensive electrical system diagnostics, including wiring diagrams and component identification.
Air Conditioning:
Information on air conditioning equipment, where applicable.
Maintenance:
Operating and maintenance procedures for routine servicing.
Dismantling Reassembling:
Step-by-step instructions for dismantling and reassembling major vehicle components and systems.
Troubleshooting:
Diagnostic procedures and common issue identification.
Engine Overhaul:
Includes detailed procedures for complete engine disassembly, inspection, repair, and reassembly of the Jaguar XK engine and its auxiliaries.
Wiring Diagrams:
Provides comprehensive Jaguar and Lucas wiring diagrams essential for diagnosing and repairing the electrical system.
Depth:
Factory-level technical details, including specifications, diagrams, illustrations, and wiring schematics for complete repair and diagnosis.
Torque Specifications:
Contains critical torque specifications for engine components, chassis fasteners, and suspension parts, essential for proper assembly and longevity.
Illustrations Diagrams:
Features step-by-step instructions accompanied by detailed illustrations and diagrams of components and systems.
Engine Type:
Jaguar XK Inline-6 Cylinder, Overhead Valve (OHV)
Displacement Mark Vii:
3442 cc (3.4 Liters)
Displacement Xk120 Xk140:
3442 cc (3.4 Liters) for standard XK120/XK140; later XK140 could have 3781 cc (3.8 Liters) options not explicitly detailed but implied by supplement coverage.
Horsepower Estimate:
Mark VII: ~160-190 bhp; XK 120/140: ~160-210 bhp, depending on tuning and specification (e.g., C-Type head on some XK 140s).
Carburetors:
Typically twin SU carburetors (e.g., H6 or HD6), specific models and sizes detailed within the manual.
Valve Adjustment Procedure:
Detailed procedure for valve clearance adjustment, typically performed when the engine is cold.
Ignition System:
Lucas ignition components, including distributor settings and spark plug specifications.
Gearbox Type Mark Vii:
Moss 4-speed manual gearbox.
Gearbox Type Xk120 Xk140:
Moss 4-speed manual gearbox (XK140 offered optional overdrive).
Overdrive Availability:
Optional Laycock de Normanville overdrive available on some XK 140 models.
Clutch Type:
Single dry plate clutch.
Gearbox Oil Specification:
Specification for gearbox oil (e.g., GL-4 gear oil or specific EP lubricant, exact grade provided in manual).
Body Styles:
Mark VII: 4-door saloon; XK 120: 2-door open two-seater (OTS), Fixed Head Coupe (FHC), Drophead Coupe (DHC); XK 140: similar to XK 120 but with minor dimensional changes and improvements.
Curb Weight Mark Vii:
Approximately 3,600 - 3,900 lbs (1630 - 1770 kg) depending on equipment.
Curb Weight Xk120 Xk140:
Approximately 2,900 - 3,300 lbs (1315 - 1500 kg) depending on body style and equipment.
Infotainment System:
Basic dashboard instrumentation of the period, focused on gauges for speed, RPM, oil pressure, water temperature, and fuel. Radio would be a separate component.
Driver Assistance Systems:
None in the modern sense. Focus was on responsive steering and braking for the driver's control.
Connectivity Features:
N/A
Oil Change Interval Estimate:
Typically every 3,000 miles or 6 months, though the manual will provide exact factory recommendations.
Tune Up Interval Estimate:
Regular tune-ups including spark plug replacement, ignition timing adjustment, and carburetor synchronization as needed, with specific intervals detailed in the manual.
Engine Oil Specification:
Specific viscosity grade (e.g., SAE 20W-50 or 20W-40 depending on climate and engine condition) and type (e.g., high-zinc for flat tappet engines) will be detailed.
Coolant Specification:
Recommendation for coolant mixture (e.g., ethylene glycol antifreeze with distilled water) and system capacity.
Brake Fluid Specification:
Specification for brake fluid (likely DOT 3 or DOT 4, depending on system material and original specification).
Common Issues:
The manual would address common wear items and potential issues of the era, such as carburetor tuning, ignition system reliability, brake system maintenance, and potential for oil leaks from engine seals. Specific details are within the manual's troubleshooting sections.
Jaguar Reputation:
Jaguar was renowned for producing high-performance luxury sports cars and saloons with elegant styling and powerful, smooth-running XK engines.
Mark Vii Evolution:
Successor to the Mark V, the Mark VII was Jaguar's first post-war large saloon, featuring the XK engine and a focus on performance and luxury.
Xk120 Evolution:
Iconic sports car that debuted in 1948, celebrated for its performance, handling, and beautiful design, initially with a 3.4L XK engine.
Xk140 Evolution:
An evolution of the XK120, introduced in 1954, offering improved handling, more powerful engine options (including the 3.8L in some variants), and minor styling tweaks.
Production Period:
Mark VII: 1951-1956; XK 120: 1948-1954; XK 140: 1954-1957.
