Model:
Mark X (also known as Mark 10)
Model Designation:
Series 1 (for the initial production run covered by this manual)
Chassis Codes:
420G (later iteration, but the core platform is relevant)
Production Years:
1961-1970
Covered Years:
1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970
Body Style:
4-door Saloon (Sedan)
Segment:
Full-size luxury grand tourer
Target Audience:
Affluent individuals, executives, and those seeking prestige and performance
Key Competitors:
Rolls-Royce Silver Cloud, Bentley S-Type, Mercedes-Benz 600 Grosser, Aston Martin Lagonda Rapide
Design Philosophy:
Elegant styling, powerful straight-six engine, advanced independent suspension for its time, and spacious luxury interior
Manual Value Proposition:
Enables owners to perform professional-level maintenance and repairs, saving costs and ensuring the longevity of a classic vehicle
Primary Focus:
Mechanical technicians and knowledgeable owners performing repair and overhaul
Scope:
Comprehensive repair and overhaul procedures for the Jaguar Mark 10
Estimated Page Count:
Likely substantial, typical for comprehensive workshop manuals of the era (exact count not provided, but implying a detailed resource)
Type:
Workshop Service Repair Manual
Engine:
Detailed coverage including tune-ups, removal/installation, disassembly/assembly, lubrication system
Fuel System:
Comprehensive instructions on components and repair
Ignition System:
Detailed procedures for ignition system maintenance and repair
Exhaust System:
Coverage for maintenance and repair
Electrical System:
Extensive coverage of wiring, components, and troubleshooting
Transmission:
Procedures for repair and overhaul, including disassembly/assembly
Bodywork:
Information on body maintenance and repair
Cooling System:
Implied coverage as part of general engine maintenance and repair
Suspension System:
Implied coverage within general repair and overhaul
Braking System:
Implied coverage within general repair and overhaul
Steering System:
Implied coverage within general repair and overhaul
Maintenance:
Routine maintenance and servicing procedures
Diagnostics:
Diagnostic procedures for troubleshooting issues
Repair:
Detailed repair procedures for all major systems
Overhaul:
Complete overhaul instructions for engine, transmission, and other major components
Assembly Disassembly:
Step-by-step instructions for component removal and installation
Troubleshooting:
Guidance for identifying and resolving common and complex problems
Proprietary Components:
Instructions for integrated proprietary components and references to respective manufacturer guidelines
Depth:
Advanced, suitable for professional technicians, but accessible for experienced DIY enthusiasts
Emphasis:
Highlights special aspects of the Jaguar Mark 10, alongside general automobile practices
Special Tools:
References and illustrations of required or recommended special Jaguar tools with part numbers
Safety Precautions:
Emphasis on safety equipment and procedures, including torque specifications
Delivery:
Electronic delivery via Email (Fast and Free)
Quality:
Assumed high quality for clear reproduction of diagrams and text, typical of professional manuals
Binding:
Not applicable (PDF format)
Paper Type:
Not applicable (PDF format)
Engine Type:
Inline-6 Cylinder, DOHC (Dual Overhead Camshaft)
Displacement:
3.8 Litre (3794 cc) for early models, later upgraded to 4.2 Litre (4235 cc)
Bore X Stroke:
3.8L: 87 mm x 106 mm; 4.2L: 92.1 mm x 106 mm (typical for Jaguar engines of this era)
Compression Ratio:
Typically around 8.0:1 to 8.5:1, depending on variant and market
Horsepower:
3.8L: Approx. 220-230 bhp; 4.2L: Approx. 245-265 bhp
Torque:
3.8L: Approx. 240-260 lb-ft; 4.2L: Approx. 283-310 lb-ft
Carburetion:
Twin Stromberg CD/CDSE or SU HD-6/HD-8 Carburetors (typically two)
Fuel Type:
Premium Unleaded Gasoline (Octane rating appropriate for the era, likely 91-98 RON/87-93 MON)
Ignition System:
Lucas Distributor with Ignition Coil, often with electronic ignition conversion options retrofitted
Oil Capacity:
Approx. 6-7 US Quarts (with filter change)
Recommended Oil Viscosity:
SAE 20W-50 or SAE 10W-30 (depending on climate, as per period specifications)
Type:
3-speed Automatic (BorgWarner DG150 or similar) or 4-speed Manual with Overdrive
Type:
4-speed Manual with Laycock Type J Overdrive
Gear Ratios:
Specific ratios vary by transmission type and overdrive, detailed in the manual
Transmission Fluid:
Dexron-III/Mercon or equivalent Automatic Transmission Fluid (ATF) for automatics; GL-4 Hypoid Gear Oil for manuals
Transmission Fluid Capacity
Automatic Capacity:
Approx. 5-6 US Quarts (for BorgWarner DG150)
Length:
Approx. 16 ft 6 in (5029 mm)
Width:
Approx. 6 ft 2 in (1880 mm)
Height:
Approx. 4 ft 6 in (1372 mm)
Wheelbase:
Approx. 10 ft (3048 mm)
Curb Weight:
Approx. 3,800 - 4,200 lbs (1725 - 1905 kg), depending on equipment and transmission
Crash Test Data:
No modern crash test ratings available due to era of manufacture; safety features were typical for the period.
Braking:
Four-wheel Dunlop hydraulic disc brakes (standard on all wheels)
Steering:
Power-assisted recirculating ball steering
Seat Belts:
Optional front seat belts, often fitted as an aftermarket or dealer option.
Construction:
Body-on-frame construction, known for its strength but lacking modern crumple zones.
Audio System:
Original fitment was typically a Blaupunkt or Motorola AM radio, with optional FM reception. Most surviving examples may have aftermarket or upgraded audio systems.
Dashboard:
Classic analogue gauges for speed, RPM, oil pressure, fuel, temperature, and battery voltage.
Features:
Power steering, power disc brakes, automatic transmission option, and optional air conditioning were the primary comfort and assistance features.
Features:
No modern connectivity features; communication was limited to basic in-car entertainment and occupant comfort.
Oil Change Interval:
Every 3,000 miles or 6 months, whichever comes first
Tune Up Interval:
Every 6,000-12,000 miles, or as needed based on performance
Transmission Fluid Change:
Every 24,000 miles or 24 months for automatics; manual gearbox oil inspection and periodic change.
Coolant:
Ethylene Glycol based antifreeze mixed with distilled water (50/50 ratio); capacity approx. 16-18 US Quarts.
Brake Fluid:
DOT 3 or DOT 4 Hydraulic Brake Fluid
Power Steering Fluid:
Likely a specific hydraulic fluid or ATF; consult manual for precise specification.
Common Problems:
Rust in wheel arches, sills, and around windows; potential for overheating; wear in steering and suspension components; electrical gremlins common in vehicles of this age; carburetor tuning sensitivity.
Preventative Maintenance:
Regular fluid checks and changes, diligent rust prevention, electrical system maintenance, and carburetor synchronization are crucial.
Jaguar Legacy:
Jaguar Cars has a long history of producing luxurious, powerful, and stylish performance vehicles.
Predecessors:
Mark IX (Mark 9)
Successors:
Jaguar XJ6 (Series I)
Development:
The Mark X represented Jaguar's flagship offering, designed to compete with the best luxury sedans globally. It featured independent rear suspension and advanced disc brakes for its time.
Manufacturing Location:
Coventry, England
Production Numbers:
Approximately 13,000 units produced across its lifespan (including Series 1 and the later 420G).
