🏷️ Basic Information

Make:

Land Rover

Model:

Defender 90

Year:

1990

Chassis Code:

LD

👋 Introduction

Target Audience:

Land Rover Defender 90 owners and mechanics

Value Proposition:

Provides official dealer-level repair information for DIY enthusiasts and professional mechanics

Manual Type Advantage:

Comprehensive, official factory documentation versus generic aftermarket guides

Ease Of Use:

Designed to be simple to use, with clear instructions and diagrams

Completeness:

Covers every part of the vehicle, from basic maintenance to in-depth repairs

📋 Manual Details

Primary Coverage:

Complete factory service and repair for Land Rover Defender 90

Scope:

All mechanical, electrical, and body systems

Estimated Page Count:

Estimated 500-700 pages (typical for comprehensive factory manuals of this era)

Type:

Factory Service Repair Manual

Distinction:

Distinguishes from an owner's manual by providing detailed repair procedures and specifications

Language:

English

Format:

PDF

Accessibility:

Zoom In/Out functionality

Software Requirement:

Requires Adobe PDF Reader

Operating Systems:

Compatible with all versions of Windows and Mac

📖 Manual Coverage

Engine:

Comprehensive engine overhaul, diagnostics, tuning, and component replacement

Fuel System:

Fuel injection system diagnosis, repair, pump, injectors, fuel lines, and filters

Cooling System:

Radiator, water pump, thermostat, hoses, fan, and coolant specifications

Clutch:

Clutch assembly, hydraulic system, master and slave cylinders, and adjustment

Transmission:

Manual gearbox and transfer box disassembly, reassembly, maintenance, and fluid specifications

Drivetrain:

Propeller shafts, universal joints, differential, and axle components

Steering:

Power steering system, steering box, linkages, and alignment specifications

Suspension:

Front and rear suspension, springs, shock absorbers, bushings, and control arms

Brakes:

Front disc brakes, rear drum brakes, hydraulic system, ABS (if equipped), and bleeding procedures

Electrical:

Complete wiring diagrams, lighting system, ignition, starting system, charging system, and accessory circuits

Body And Chassis:

Includes body panel removal, frame maintenance, doors, windows, and interior trim procedures

Routine Maintenance:

Oil changes, filter replacements, spark plug replacement, fluid checks and top-ups

Diagnostics:

Troubleshooting guides for various systems and common issues

Repair Overhaul:

Detailed step-by-step instructions for component disassembly, repair, and reassembly

Specifications:

Torque wrench settings, fluid capacities, engine tuning data, and general fitting instructions

Troubleshooting:

Specific troubleshooting trees and symptom-based diagnostic steps

Depth:

Comprehensive, covering all workshop procedures performed by official dealers

Diagrams:

Step-by-step diagrams for all workshop procedures

📊 Manual Specifications

File Type:

PDF

Compression:

Requires WinZip or compatible extraction software

Searchability:

Likely searchable text content within the PDF, allowing for quick access to information

Printability:

Printable pages (implied by PDF format)

Binding:

N/A (Digital format)

Paper Quality:

N/A (Digital format)

⚙️ Engine Specifications

Engine Options 1990 Defender:

Likely 2.5L Naturally Aspirated Diesel (12J/13J), 2.5L Turbo-Diesel (200Tdi from later 1990 models), or 2.5L Petrol (13H)

Engine Tuning Data:

Includes specific data for ignition timing, idle speed, fuel mixture (carbureted petrol), and injection timing (diesel)

Horsepower Range:

Typically 60-85 hp for diesel, 90-110 hp for petrol variants of this era

Torque Range:

Torque figures vary significantly by engine, with diesels prioritizing low-end torque

Injection Type:

Mechanical fuel injection (various types depending on diesel engine, e.g., Lucas CAV, Bosch VE) or Carburetor for petrol engines

Diesel Engines:

Examples: 12J (2.5L NA Diesel), 13J (2.5L NA Diesel), 200Tdi (2.5L Turbo-Diesel - introduced late 1990)

Petrol Engines:

Example: 13H (2.5L Petrol)

🔧 Transmission

Gearbox Type:

LT77 or R380 5-speed manual transmission

Transfer Box:

2-speed LT230 transfer box with permanent four-wheel drive and center differential lock

Automatic Transmission:

Uncommon for 1990 Defender 90, manual transmission was standard

Gear Ratios:

Detailed gear ratios for both main gearbox and transfer box provided

📐 Dimensions

Wheelbase:

90 inches (2286 mm)

Body Styles:

Hardtop, Soft-top, Station Wagon

Curb Weight Range:

Approximately 1600-1800 kg (3527-3968 lbs) depending on configuration

💡 Technology Features

Audio System:

Basic AM/FM radio and cassette player were common options; often aftermarket units were installed

ABS:

Anti-lock Braking System (ABS) was available as an option on some models, particularly later in the year or on higher trims.

Connectivity Features:

Minimal by modern standards; primarily focused on vehicle function rather than connectivity.

🔧 Maintenance

Engine Oil Change:

Typically every 3,000-6,000 miles (5,000-10,000 km) or 6-12 months, depending on usage and oil type

Transmission Oil Change:

Every 30,000 miles (50,000 km) or as specified for gearbox and transfer box

Other Intervals:

Includes intervals for fuel filters, air filters, coolant, brake fluid, and diff oil changes

Engine Oil:

API CD/CE or higher diesel engine oil, SAE 15W-40 or 10W-40 depending on climate. Petrol engines may use API SG or higher, SAE 10W-40.

Transmission Fluid:

Manual Gearbox: Typically GL-4 80W/90 gear oil. Transfer Box: GL-4 or GL-5 80W/90 gear oil.

Coolant:

Ethylene glycol-based antifreeze mixed with distilled water (typically 50/50 ratio) providing freeze protection

Brake Fluid:

DOT 3 or DOT 4 brake fluid

Power Steering Fluid:

Specific hydraulic fluid or ATF (Automatic Transmission Fluid) as per manual

Common Wear Items:

Clutch wear, suspension bushings, exhaust system corrosion, oil leaks from engine/gearbox, starter motor issues

Diesel Engine Specifics:

Early diesel engines (e.g., 12J) can be prone to overheating if cooling system is not meticulously maintained. 200Tdi is more robust.

Electrical System Quirks:

Corrosion on connections, aging wiring harnesses, and sometimes issues with the ignition switch or warning lights.

Engine Oil Capacity:

Approx. 5.7 liters (6 US quarts) for diesel engines, check manual for specific engine

Transmission Oil Capacity:

Approx. 2.5 liters for gearbox, 2.3 liters for transfer box (check manual for precise capacities)

📚 Vehicle History

Land Rover Legacy:

Defender is a direct descendant of the original Land Rover Series vehicles, renowned for off-road capability and ruggedness

Defender Generation 1990:

This model represents the transition period, with the introduction of the 200Tdi engine becoming more prevalent later in the year. It continued the 'Defender' designation introduced in 1983 over the Series chassis.

Manufacturing Location:

Solihull, England

🏆 Awards & Recognition

Off Road Acclaim:

The Land Rover Defender series consistently receives accolades for its legendary off-road prowess and durability, making it a favourite for expeditions and utility work.