Positioning:
Iconic 4x4 vehicle, renowned for its off-road capability and durability.
Competitors:
Jeep Wrangler, Toyota Land Cruiser, Mitsubishi Pajero (during its production era).
Design Philosophy:
Rugged, utilitarian, go-anywhere capability, body-on-frame construction.
Target Audience:
Off-road enthusiasts, utility users, adventurers, and those valuing robustness over luxury.
Engine Systems:
Tdi Engine, Fuel System, Cooling System, Manifold and Exhaust System
Drivetrain Systems:
Clutch, Manual Gearbox, Transfer Gearbox, Propeller Shafts, Front Axle & Final Drive, Rear Axle & Final Drive
Chassis Suspension Steering:
Steering, Front Suspension, Rear Suspension, Brakes, Wheels & Tyres, Chassis and Body
Comfort Convenience:
Heating and Ventilation, Air Conditioning, Wipers and Washers
Electrical Systems:
Electrical Systems, Instruments
Maintenance Procedures:
Scheduled Maintenance, Fluid Changes, Filter Replacements, General Fitting Reminders
Repair Procedures:
Engine Overhaul, Gearbox Repair, Suspension Overhaul, Brake Servicing, Electrical Diagnostics, Bodywork Repairs
Troubleshooting:
Diagnostic routines, fault finding, common issue resolution
Depth:
Detailed diagnostics, component testing, overhaul procedures, torque specifications, wiring diagrams
Engine Type:
Inline 4-cylinder turbocharged diesel
Displacement:
2.5 Liters (2495 cc)
Bore X Stroke:
90.5 mm x 90.0 mm
Compression Ratio:
19.5:1
Horsepower Output:
Approx. 113 hp (83.5 kW) @ 4000 rpm
Torque Output:
Approx. 265 Nm (195 lb-ft) @ 1800 rpm
Fuel Injection:
Direct Injection, Rotary Injection Pump (Bosch VE)
Idle Speed:
Refer to manual for specific specifications (typically around 750-850 RPM)
Injection Timing:
Critical for performance and emissions; detailed procedures in manual.
Type:
5-speed Manual Transmission
Gear Ratios:
Specific ratios vary by Defender model; manual provides detailed gearbox ratios.
Type:
Automatic Transmission (less common on 300Tdi models, but available on some variants).
Transfer Case:
2-speed transfer gearbox with permanent four-wheel drive, centre differential lock (manual engagement).
Clutch:
Single dry plate, hydraulic operation.
Wheelbase:
Varies (e.g., 90" / 2286 mm, 110" / 2794 mm, 127" / 3226 mm for specific Defender variants).
Ground Clearance:
Typically 12 inches (300 mm) or more, depending on tire size.
Curb Weight:
Varies significantly by body style (e.g., 1600-2000 kg).
Crash Safety:
Older vehicle design, pre-modern safety standards. Focus on structural integrity.
Braking System:
Hydraulically operated, often with front discs and rear drums (later models may have 4-wheel discs). ABS not standard on all 300Tdi models.
Seatbelts:
Standard three-point seatbelts in the front; lap belts may be present in the rear depending on configuration.
Oil Change Interval:
Typically 5,000-6,000 miles (8,000-10,000 km) or 12 months, whichever comes first. Manual will confirm exact intervals.
Air Filter Replacement:
Refer to manual; typically every 12,000-24,000 miles (20,000-40,000 km) or as needed in dusty conditions.
Engine Oil Type:
API CG-4 or CH-4 SAE 15W-40 or 10W-30 diesel engine oil. Manual will specify exact Land Rover approval.
Coolant Type:
Ethylene glycol based antifreeze/coolant, typically a 50/50 mix with distilled water. Manual will list specific LRO specifications.
Transmission Fluid Type:
Manual Gearbox: API GL-4 SAE 75W-90 or 80W-90. Transfer Box: API GL-4 SAE 75W-90 or 80W-90. Diff. Oil: API GL-5 SAE 80W-90 or 85W-140. Manual is essential for exact specifications.
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid.
Common Wear Items:
Glow plugs, injector seals, turbocharger seals, clutch wear, suspension bushings, rear crossmember rust, gearbox synchromesh wear.
Cooling System Potential:
Hoses, radiator, thermostat, water pump are common maintenance items. Overheating can occur if neglected.
Fuel System Potential:
Lift pump diaphragm failures, injector pump wear, injector nozzle clogging.
Legacy:
Built on the legendary Land Rover Series legacy, synonymous with ruggedness and off-road prowess.
Defender Era:
Part of the Defender generation that evolved from the Series vehicles, with modernizations introduced over time.
Production Years:
The 300Tdi engine was prominent in the Defender from circa 1994-1998.
Manufacturing Locations:
Primarily Solihull, England.
