Positioning:
The Jaguar S-Type (Series 1) was positioned as a luxurious and sporty sedan, offering a blend of performance and comfort, often competing with models from Mercedes-Benz and BMW of the era. It represented Jaguar's commitment to refined engineering and classic styling.
Competitors:
Primarily competed with Mercedes-Benz W111/W112 S-Class, BMW Neue Klasse sedans, and similar high-end offerings from marques like Rover and Jensen.
Distinctive Elements:
Elegant styling, powerful 3.8L XK engine, independent rear suspension (IRS), luxurious interior appointments, and exceptional ride quality.
Intended Users:
Enthusiasts, classic car owners, mechanics, and DIY individuals seeking detailed information for maintenance and repair of the Jaguar S-Type 3.8 Series.
Engine Systems:
Engine disassembly, assembly, tuning, fuel delivery, lubrication, cooling, ignition.
Transmission Driveline:
Manual and automatic transmission overhaul, differential, driveshafts, rear axle.
Suspension Steering:
Front and rear suspension, steering box, power steering system, wheel alignment.
Brakes:
Hydraulic system, disc brakes (front and rear), parking brake, brake fluid specifications.
Electrical Systems:
Wiring diagrams, lighting, ignition, charging system, starter motor, instrument cluster, accessories.
Body Chassis:
Body construction, frame, bumpers, doors, windows, interior trim, heating and ventilation.
Fuel Exhaust:
Fuel tank, fuel lines, carburetors (SU HD6 or similar), exhaust manifold and system.
Ignition Control:
Ignition timing, spark plugs, distributor, coil, wiring.
Instrument Cluster:
Speedometer, tachometer, fuel gauge, oil pressure gauge, coolant temperature gauge, warning lights, and their associated circuits.
Lamps:
Headlights, taillights, brake lights, turn signals, interior lighting, wiring, bulb types.
Wipers Washers:
Wiper motor, linkage, blades, washer pump (if equipped), fluid reservoir.
Exhaust System:
Exhaust manifolds, pipes, mufflers, hangers, and gaskets.
Fuel System:
Fuel tank, fuel lines, fuel pump, fuel filters, carburetors.
Steering:
Steering column, steering box, idler arm, tie rod ends, power steering system (if equipped).
Tires Wheels:
Tire pressures, wheel types, lug nut torque specifications.
Body:
Door mechanisms, window regulators, hood and trunk latches, exterior trim, panel alignment.
Heating Air Conditioning:
Heater core, blower motor, ducting, controls. Air conditioning was a rare dealer/dealer fitted option and may not be extensively covered.
Emissions Control:
Very limited emissions control systems for this era. May cover basic crankcase ventilation (PCV) if fitted.
Maintenance:
Scheduled maintenance, lubrication points, fluid changes, filter replacements, tune-up procedures.
Repair Overhaul:
Complete engine rebuild, transmission overhaul, brake system repairs, suspension component replacement, electrical system diagnostics and repair.
Troubleshooting:
Diagnostic charts and procedures for common problems across all major systems.
Technical Specifications:
Torque values, clearances, tolerances, fluid capacities, electrical specifications.
Disassembly Assembly:
Detailed instructions for the complete disassembly and reassembly of major components and systems.
Wiring Diagrams:
Comprehensive wiring schematics for electrical troubleshooting and repairs.
Torque Specifications:
Specific torque values for critical fasteners throughout the vehicle.
Depth:
Comprehensive; covers full vehicle disassembly and reassembly, including detailed component-level repair.
Oil Change:
Recommended every 3,000 miles or 6 months, whichever comes first.
Grease Points:
Regular lubrication of suspension, steering, and driveshaft U-joints is crucial (typically every 1,000-2,000 miles).
Engine Oil:
API SF/CD rated oil, SAE 20W-50 or 10W-40 depending on climate. (Original specification was likely thicker grade mineral oil.)
Coolant:
Ethylene Glycol based antifreeze mixture with distilled water (50/50 ratio). Refer to manual for specific type.
Brake Fluid:
DOT 3 or DOT 4 Hydraulic Brake Fluid (ensure it's compatible with Girling systems).
Transmission Oil Manual:
GL-4 or GL-5 gear oil, typically SAE 90.
Transmission Oil Automatic:
Dexron II or equivalent automatic transmission fluid (ATF).
Differential Oil:
API GL-5 Hypoid Gear Oil, SAE 90.
Common Problems:
Rust in sills, wheel arches, and boot floor; weakening of rear springs; carburetor tuning issues; potential gearbox synchromesh wear; oil leaks from engine and drivetrain components; aging electrical wiring.
