Target Audience:
Do-it-yourself enthusiasts and professional mechanics working on Jaguar XK120 models
Historical Significance:
The XK120 was Jaguar's flagship sports car of the era, renowned for its performance, style, and engineering, setting new benchmarks for sports cars.
Advantage Over Paper:
Less expensive, more convenient, easily searchable, easily printable, no damage/ripping from workshop use
Download Speed:
Speed Download
Accessibility:
Compatible with all Windows and Mac operating systems, accessible via web browser on any computer or mobile device
Licensing:
No extra fees, no expiry dates
Powertrain:
Engine Service/Repair, Transmission Service/Repair, Differential/Drive, Axle
Chassis And Suspension:
Suspension, Steering, Chassis/Body
Braking System:
Brake System
Electrical System:
Wiring Diagram, Electrical System, Engine Control System
Fuel And Cooling Systems:
Cooling System, Fuel System, Fuel Injection
HVAC And Emissions:
Emission System, Heater/Air Conditioning
Interior And Safety:
Interior, Restraint System
Fuel System Specifics:
Fuel tank removal and installation, fuel lines, fuel pump, carburetor overhaul and adjustment (e.g., SU H6).
Cooling System Specifics:
Radiator maintenance, water pump, thermostat, hoses, fan operation.
Electrical System Specifics:
Generator charging system, starter motor, ignition system (distributor, coil, spark plugs), lighting systems, dashboard instrumentation.
Maintenance And Repair:
General Maintenance, Troubleshooting, Step-by-step repair instructions based on complete disassembly
Engine Overhaul:
Cylinder head removal and reconditioning, piston and connecting rod service, crankshaft and bearing inspection, valve train adjustment.
Transmission Repair:
Gearbox disassembly and assembly, synchromesh inspection, clutch replacement, driveshaft and universal joint service.
Brake System Repair:
Brake shoe replacement, drum servicing, master cylinder and wheel cylinder overhaul, brake line inspection and replacement.
Suspension And Steering:
Front end geometry, kingpin and bushing replacement, shock absorber servicing, steering box adjustment and repair.
Chassis And Body:
Frame inspection, body panel alignment, door and window mechanism repair, trim fitting.
Depth Of Coverage:
Comprehensive, suitable for DIYers and experienced mechanics, includes hundreds of photos and illustrations
Diagnostic Methods:
Includes troubleshooting guides for common drivability issues, electrical faults, and mechanical problems specific to the XK120.
Engine Type:
Inline 6-cylinder, DOHC (Dual Overhead Camshaft)
Displacement:
3.4 Liters (approx. 3442 cc)
Horsepower:
Approximately 160-180 bhp (depending on specific tune and year)
Torque:
Approximately 193 lb-ft @ 4,000 rpm (estimate, varies with tune)
Carburetion:
Typically dual SU carburetors (e.g., SU H6)
Fuel Type:
Leaded gasoline (historically), modern unleaded with appropriate octane rating is typically used now.
Oil Change Interval Recommendation:
Typically every 2,000-3,000 miles or at least annually, depending on usage. Specific interval depends on oil quality and driving conditions.
Engine Oil:
SAE 20W-50 or SAE 30 (depending on climate and manufacturer recommendation for the era; consult specific manual for precise weight and API service rating).
Coolant:
Water mixed with a suitable anti-freeze/anti-corrosion additive (e.g., ethylene glycol based, typically 50/50 mix). Distilled water is recommended.
Brake Fluid:
DOT 3 or DOT 4 (ensure compatibility with original brake system materials; consult manual for exact specification).
Transmission Fluid:
GL-4 Hypoid Gear Oil (e.g., SAE 90, or specific Jaguar recommended viscosity)
Differential Fluid:
GL-5 Hypoid Gear Oil (e.g., SAE 90, or specific Jaguar recommended viscosity for the period).
Common Concerns:
Oil leaks (especially from the rear crankshaft seal), carburetor tuning issues, potential wear in suspension bushings and kingpins, cooling system maintenance critical for preventing overheating, clutch wear.
Electrical Reliability:
Wiring harness condition and insulation integrity can degrade over time, leading to electrical gremlins.
