This manual covers the HQ, HJ, HX, and HZ series, produced approximately between 1971 and 1980. These vehicles are celebrated Australian automotive icons, reflecting the design and engineering prowess of their era. The range encompasses various body styles, including sedans, coupes, wagons, utes, and panel vans, each equipped with a selection of Six-Cylinder and V8 engines, as well as manual and automatic transmissions. This comprehensive documentation aims to provide detailed insights into the mechanical and electrical systems that define these popular models, offering a valuable resource for enthusiasts and owners alike. The purpose of this factory service repair manual is to provide extensive guidance for the service, maintenance, and repair of your vehicle. It details procedures for all major systems, including the powertrain, chassis, suspension, brakes, steering, electrical systems, cooling, fuel, and emissions. You will find information on general maintenance, periodic lubrication, troubleshooting common problems, and advanced diagnostics, complete with technical data, schematics, and wiring diagrams. This manual is an indispensable tool for technicians, mechanics, and DIY enthusiasts seeking to maintain and restore these classic vehicles to their optimal condition. 🏷️ Basic Information Identification Make: Holden Model: HQ, HJ, HX, HZ Model Years: 1971-1980 (approximate range) Codes Chassis Codes: HQ, HJ, HX, HZ 👋 Introduction Market Position Target Audience: Technicians, Mechanics, DIY Enthusiasts, Car Repair Learners Competitive Analysis Value Proposition: Low Price, Great Quality, Instant Access, Comprehensive Coverage Key Features Data Accuracy: Maintained like original manufacturer book Content Scope: Complete information for vehicle repair and maintenance Accessibility: Instant download, no need to search physical bookstores 📋 Manual Details Coverage Areas Primary Coverage: Service and Repair Secondary Coverage: General Maintenance, Troubleshooting, Diagnostics Page Count Estimated Pages: Hundreds to Thousands (printable) Manual Type Type: Factory Service Repair Manual Language Language: English Format File Format: PDF Delivery Method: Instant Download 📖 Manual Coverage Systems Covered Powertrain: Engine, Transmission, Differential/Drive, Axle Chassis And Suspension: Brake System, Suspension, Steering Electrical And Cooling: Electrical System, Wiring Diagrams, Cooling System, Engine Control System Fuel And Emissions: Fuel System, Fuel Injection, Emission System Body And Interior: Chassis/Body, Restraint System, Interior, Heater/Air Conditioner Procedures Included Maintenance Procedures: General Maintenance, Periodic Lubrication, Maintenance Check List, Maintenance Chart, Service Instruction Repair Procedures: Engine Service/Repair, Transmission Service/Repair, Brake System Repair, Suspension Repair, Steering Repair, Cooling System Repair, Fuel Injection Repair, Fuel System Repair, Emission System Repair, HVAC Repair, Engine Control System Repair, Differential/Drive Repair, Axle Repair, Chassis/Body Repair, Restraint System Repair, Interior Component Repair Diagnostic Procedures: Troubleshooting, Diagnostic Procedures for all major systems Technical Depth Diagnostic Level: Advanced Diagnostics, Circuit Diagrams, Technical Data Repair Level: Complete Factory Level Repair and Overhaul Procedures Information Type: Technical Data, Schematics, Diagrams, Datasheets 📊 Manual Specifications File Format PDF Quality: High Quality, Printable Searchability: Assumed searchable text content within PDF Print Quality Printability: High Quality Printable Pages Binding Type Binding: Digital Download (No physical binding) Paper Type Paper Type: N/A (Digital) Requirements Software Requirements: Adobe PDF Reader, WinZip (for larger files) Operating System Compatibility: All Versions of Windows & Mac ⚙️ Engine Specifications Primary Engine Engine Types Covered: Holden Six-Cylinder (e.g., 202, 245, 253) and V8 (e.g., 308, 350) variants. Specific details would be in the manual. Performance Horsepower Torque Data: Manual will contain specific HP/Torque figures for each engine variant and model year. Fuel System Fuel System Types: Carbureted and early Fuel Injection systems (as applicable to the era and models). Fuel Type: Petrol (Gasoline) Engine Rebuild Rebuild Procedures: Detailed procedures for engine disassembly, overhaul, and reassembly. 🔧 Transmission Standard Standard Transmission Types: Manual Transmissions (e.g., 3-speed, 4-speed) and Automatic Transmissions (e.g., Trimatic, Turbo-Hydramatic). Optional Optional Transmission Types: Covered by availability for different engine and model configurations. Features Transmission Service: Service, repair, and overhaul procedures for all transmission types. Fluid Requirements Transmission Fluid Specifications: Manual will detail correct fluid types and capacities for each transmission. 📐 Dimensions Exterior Body Styles Covered: Sedan, Coupe, Wagon, Ute, Panel Van (depending on specific HQ-HZ model variants). Wheelbase Track: Specifications for wheelbase and track dimensions provided in the manual. Weights Curb Weight: Manual will include curb weight specifications for various configurations. Gross Vehicle Weight: GVW ratings will be included. 🛡️ Safety Features Ratings Crash Test Results: Likely not directly covered as crash test reporting standards were different, but structural integrity information relevant to safety will be present. Active Features Active Safety Systems: Brake system components, steering system components, chassis integrity. Passive Features Passive Safety Features: Restraint System (seat belts), body structure, dashboard padding. 💡 Technology Features Infotainment Infotainment Systems: Covers original radio systems, speakers, and related electrical components. Driver Assistance Driver Assistance Features: Limited to basic features of the era; manual will cover the operation and maintenance of those systems (e.g., wipers, lights). Connectivity Connectivity Features: N/A for modern connectivity; focuses on basic vehicle electrical systems. Electrical Diagnostics Wiring Diagram Detail: Comprehensive wiring diagrams are a key feature of...