Positioning:
High-end luxury sedan of its era, offering a blend of performance and refinement. Targeted at discerning buyers seeking a premium driving experience.
Competitors:
Competed with other luxury saloons like Mercedes-Benz S-Class, Rolls-Royce Silver Shadow, and Aston Martin Lagonda.
Distinguishing Features:
Independent rear suspension (IRS), powerful inline-six engines, luxurious interior appointments, distinctive styling.
Styling Designer:
Styling generally attributed to Malcolm Sayer, who also designed the E-Type, known for aerodynamic efficiency and elegant lines.
Primary Coverage:
All aspects of repair and maintenance for Jaguar Mark X models from 1960 to 1970.
Styles Covered:
ALL STYLES COVERED (implying all body styles or trim levels within the Mark X range for the specified years).
Estimated Pages:
Hundreds of pages (specific count not provided, but implied to be comprehensive).
Type:
Factory Service Repair Manual
Engine:
Engine Service/Repair, Engine Control System, Fuel Injection/Fuel System, Cooling System, Emission System
Drivetrain:
Transmission Service/Repair, Differential/Drive, Axle
Chassis And Body:
Chassis/Body, Suspension, Steering, Brake System, Heater/Air Conditioning
Electrical:
Electrical System, Wiring Diagram
Interior And Safety:
Restraint System, Interior
Steering:
Power steering system service and repair.
Suspension:
Front and rear suspension components, including the independent rear suspension (IRS).
Bodywork:
Chassis and body repair, trim, glass, and structural components.
Maintenance:
General Maintenance, Periodic Lubrication
Diagnostics:
Troubleshooting, Advanced Troubleshooting Guide
Repair:
Step-by-step repair procedures for all covered systems, including rebuilds.
Tuning:
Includes information on tuning engine and carburettor settings for optimal performance.
Depth:
Complete factory-level detail, suitable for professional technicians and knowledgeable owners. Covers fundamentals to advanced diagnostics and repairs.
Compatibility:
Compatible with all PC-based Windows operating systems and Mac.
Digital Storage:
Can be saved to hard-drive and burned to CD-ROM.
Printability:
Printable without any restriction; individual pages or the entire manual can be printed.
Binding:
Digital (Downloadable PDF).
Paper Type:
Not applicable (digital format).
Features:
Searchable PDF for quick information retrieval.
Engine Options:
Primarily powered by Jaguar's renowned XK inline-six engines. Early models likely used the 3.8-litre variant, with later models (especially post-1964) featuring the 4.2-litre engine.
Engine Code Examples:
XK3.8, XK4.2.
Horsepower Range:
Estimated 220-265 bhp depending on engine displacement and tuning (3.8L and 4.2L).
Torque Range:
Significant torque output suitable for effortless cruising and strong acceleration for its class.
Fuel Delivery:
Typically equipped with twin SU or Zenith-Stromberg carburetors. Later models may have featured fuel injection in some markets or specific variants, though carburetion was more common.
Transmission Type Standard:
Often equipped with a 4-speed manual transmission with optional overdrive.
Transmission Type Optional:
3-speed Borg-Warner automatic transmission was a popular option.
Overdrive:
Factory overdrive unit on manual transmissions for improved fuel economy and reduced engine speed at cruising velocities.
Wheelbase:
Approximately 115 inches (2921 mm).
Length:
Approximately 197 inches (5004 mm).
Width:
Approximately 70 inches (1778 mm).
Height:
Approximately 52 inches (1321 mm).
Curb Weight:
Around 3,700-4,000 lbs (1678-1814 kg), depending on specification.
Crash Safety:
Safety standards of the era were less stringent. Key features included a robust chassis and the use of safety glass.
Braking System:
Four-wheel Dunlop disc brakes, a significant safety and performance feature for its time.
Seatbelts:
Seatbelts were optional or standard depending on the specific year and market.
Steering Column:
Collapsible steering column for improved occupant protection in frontal impacts.
Oil Change Interval:
Typically every 3,000 miles (4,800 km) or 6 months, whichever came first, depending on usage and oil quality.
Tune Up Interval:
Recommended tune-ups, including spark plug replacement and carburetor adjustment, every 6,000-12,000 miles (9,600-19,200 km).
Engine Oil Specification:
API SF/CD or equivalent, viscosity typically 20W-50 or 10W-30 depending on ambient temperature. Early models might specify straight-weight oils.
Coolant Specification:
Ethylene glycol-based antifreeze, typically a 50/50 mix with distilled water. Specific Jaguar recommendations may exist.
Transmission Fluid Manual:
GL-4 or GL-5 gear oil, viscosity dependent on climate (e.g., 80W-90).
Transmission Fluid Automatic:
DEXRON-II or equivalent automatic transmission fluid.
Brake Fluid Specification:
DOT 3 or DOT 4 brake fluid.
Differential Fluid Specification:
Hypoid gear oil, viscosity dependent on climate (e.g., 90W).
Common Problems:
Rust (particularly in sills, wheel arches, and boot floor), SU carburetor tuning issues, potential rear suspension (IRS) bush wear, cooling system leaks, electrical gremlins (common in older British cars).
Recommended Upgrades:
Electronic ignition conversion, modern brake servo upgrades, improved cooling fan systems are common for enhanced reliability.
Jaguar Philosophy:
Jaguar has a long-standing reputation for producing elegant, high-performance luxury cars with a focus on advanced engineering and stylish design.
Mark X Development:
The Mark X (later designated 420G) was Jaguar's flagship luxury saloon, designed to compete at the highest end of the market. It succeeded the Mark IX and was a precursor to the XJ series.
Production Period:
1961-1970 (as Mark X and later 420G).
Manufacturing Location:
Coventry, England.
