Mazda RX 4 Service Repair Workshop Manual 1975-1977

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🏷️ Basic Information Identification Make: Mazda Model: RX-4 Generation Generation Identifier: First Generation (SA22C chassis for RX-7, but RX-4 refers to previous model) Codes Model Codes: Mazda Grand Familia (Japan),...

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类型: Car

斯库: 290234

标签: 1975 1976 1977 Car Cars Mazda Misc RX 4

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Description

🏷️ Basic Information

Identification

Make:

Mazda

Model:

Generation

Generation Identifier:

First Generation (SA22C chassis for RX-7, but RX-4 refers to previous model)

Codes

Model Codes:

Mazda Grand Familia (Japan), Mazda RX-4 (export)

👋 Introduction

Market Position

Market Segment:

Compact/Subcompact sports sedan/coupe/wagon, positioned as an affordable and performance-oriented alternative

Competitive Analysis

Key Competitors:

Datsun 240Z/260Z, Toyota Celica, Ford Capri, various European compact sports cars

Key Features

Unique Selling Proposition:

Mazda's signature rotary engine technology, offering a unique driving experience and smooth power delivery

Body Styles:

Offered in Coupe, Sedan, and Wagon variants, appealing to a wider audience

Design Philosophy:

Sporty yet practical design with a focus on driver engagement

📋 Manual Details

Coverage Areas

Covered Years:

1975, 1976, 1977

Covered Models:

All RX-4 models and variants

Page Count

Estimated Page Count:

Comprehensive (typically 500-800+ pages for full factory manuals)

Manual Type

Manual Type:

Factory Service Repair Workshop Manual

Language

Language:

English

Format

Format:

Print (typically bound paperback or hardcover)

📖 Manual Coverage

Systems Covered

Engine Mechanical:

Rotary engine (12A) disassembly, inspection, assembly, tuning, lubrication, cooling system

Fuel System:

Carburetion (e.g., Hitachi), fuel pump, fuel lines, fuel tank, emissions control

Ignition System:

Distributor, ignition coils, spark plugs, timing adjustment

Transmission Manual:

Manual gearbox (e.g., 4-speed, 5-speed) overhaul, clutch system

Transmission Automatic:

Automatic transmission overhaul (if applicable), fluid specifications

Drivetrain:

Propeller shaft, rear axle, differentials, half-shafts

Suspension:

Front suspension (e.g., MacPherson strut), rear suspension (e.g., leaf springs), shock absorbers, springs, bushings

Steering:

Steering gear, steering column, power steering (if equipped)

Brakes:

Front disc brakes, rear drum brakes, brake hydraulics, parking brake, master cylinder, wheel cylinders

Electrical System:

Wiring diagrams, lighting, charging system (alternator, battery), starting system (starter motor), fuses, relays, instrumentation

Body And Chassis:

Body panel removal/installation, interior trim, glass, doors, seats, chassis lubrication

Heating And Ventilation:

HVAC system components, heater core, blower motor

Procedures Included

Maintenance:

Oil changes, filter replacements, tune-ups, fluid checks, belt adjustments, lubrication points

Troubleshooting:

Diagnostic charts, symptom-based problem solving for all major systems

Repair:

Step-by-step repair instructions for all major components and systems

Overhaul:

Complete disassembly and reassembly procedures for engine, transmission, and other major components

Diagnostics:

Engine timing specifications, ignition timing procedures, carburetor adjustment procedures, electrical system diagnostics

Specifications:

Torque values, clearances, adjustments, fluid capacities, wear limits

Technical Depth

Depth Of Coverage:

Comprehensive workshop level, suitable for professional technicians and advanced DIY enthusiasts

Diagnostic Tools:

Mentions of required diagnostic tools and equipment specific to the era

Special Tools:

Identification and use of specialized tools for rotary engine servicing and other specific repairs

📊 Manual Specifications

File Format

Digital File Format:

N/A (originally printed, may be available as PDF scan)

Print Quality

Print Quality:

Original factory quality (expect clear diagrams, text, and illustrations)

Binding Type

Binding Type:

Original factory binding (stapled, perfect bound, or hardbound depending on original issue)

Paper Type

Paper Type:

Original factory paper stock (typically durable, coated paper for diagrams)

Completeness

Completeness:

Complete A-Z coverage for specified model years

⚙️ Engine Specifications

Primary Engine

Engine Type:

Rotary (Wankel)

Engine Code:

Displacement Rotary Equivalent:

1.16 L (67.2 cu in) - 2 rotors, 586 cc per rotor (nominal) / 1172 cc total equivalent displacement

Performance

Horsepower Gross:

Approx. 90-110 hp (varies by market and emissions controls)

Torque Gross:

Approx. 100-115 lb-ft (varies by market and emissions controls)

Fuel System

Carburetion:

Single or Twin Hitachi downdraft carburetors (e.g., Hitachi DCZ 340)

Fuel Type:

Unleaded gasoline (as regulations changed during the period)

Lubrication

Oil Type Recommendation:

API SF or SG classification, SAE 10W-30 or 10W-40 (check manual for specifics)

Oil Capacity:

Approx. 5.0-5.5 US quarts (4.7-5.2 L) with filter

Cooling System

Coolant Type:

Ethylene glycol based coolant (50/50 mix with distilled water recommended)

Coolant Capacity:

Approx. 7.0-8.0 US quarts (6.6-7.6 L)

🔧 Transmission

Standard

Standard Transmission:

4-speed manual

Optional

Optional Transmission:

5-speed manual, 3-speed automatic (e.g., Chrysler Aisin Warner AS700 series based)

Features

Clutch Type:

Single dry plate, hydraulically actuated

Transmission Fluid Manual:

API GL-4 SAE 75W-90 or 80W-90 gear oil (check manual for specifics)

Transmission Fluid Automatic:

Dexron II or equivalent ATF (check manual for specifics)

📐 Dimensions

Exterior

Wheelbase:

Approx. 98.2 inches (2494 mm)

Overall Length:

Approx. 166.3 inches (4224 mm)

Overall Width:

Approx. 64.0 inches (1626 mm)

Overall Height:

Approx. 52.0 inches (1321 mm) for coupe

Weights

Curb Weight:

Approx. 2300-2600 lbs (1043-1179 kg) depending on body style and equipment

Gross Vehicle Weight Rating:

Varies by model, typically around 3200-3400 lbs (1450-1542 kg)

Front Track:

Approx. 53.1 inches (1350 mm)

Rear Track:

Approx. 53.3 inches (1354 mm)

🛡️ Safety Features

Ratings

Crash Test Ratings:

No formal NHTSA/IIHS ratings from this era; safety based on contemporary standards.

Active Features

Braking System:

Front disc, rear drum. Power assist optional.

Parking Brake:

Mechanical, rear drum brake actuation

Passive Features

Seatbelts:

Standard 3-point front seatbelts (lap belts may be standard in some markets/early models)

Body Construction:

Unitized body construction

Lighting:

Halogen headlamps (likely sealed beam units)

💡 Technology Features

Infotainment

Audio System:

Factory AM/FM radio, potentially with 8-track player or cassette as an option. Analog tuning.

Driver Assistance

Braking Assistance:

Power brake booster optional; no ABS or advanced electronic aids.

Connectivity

Connectivity Features:

N/A. Vehicle electronics are basic by modern standards.

🔧 Maintenance

Service Intervals

Engine Oil Change:

Every 3,000 miles (4,800 km) or 3 months, whichever comes first (typical for the era, check manual)

Oil Filter Replacement:

With every oil change

Spark Plug Replacement:

Every 12,000-15,000 miles (19,000-24,000 km) (rotary specific plugs)

Fuel Filter Replacement:

Every 15,000-20,000 miles (24,000-32,000 km)

Transmission Fluid Change:

Every 24,000-30,000 miles (38,000-48,000 km) for manual, consult manual for automatic

Coolant Flush:

Every 24,000-30,000 miles (38,000-48,000 km) or 2 years

Fluid Specifications

Brake Fluid:

DOT 3 or DOT 4 glycol-based brake fluid

Power Steering Fluid:

ATF Dexron II (if equipped with power steering)

Known Issues

Apex Seals:

Wear of apex seals in the rotary engine is a common issue, leading to loss of compression and performance. Regular oil changes and correct oil type are crucial.

Carburetor Tuning:

Hitachi carburetors can be finicky and require precise adjustment. Vacuum leaks are also a common cause of running issues.

Rotary Oil Consumption:

Rotary engines naturally consume a small amount of oil, which is injected to lubricate apex seals. Excessive consumption indicates a problem.

Cooling System:

Overheating can be an issue if the cooling system is not maintained; proper flushing and thermostat checks are important.

Rust And Corrosion:

Typical for vehicles of this era, body panels, sills, and frame rails can be susceptible to rust.

📚 Vehicle History

Brand Heritage

Manufacturer Origin:

Mazda Motor Corporation, Japan

Rotary Pioneering:

Mazda's long history and commitment to rotary engine development, beginning with the Cosmo and R100, leading into the RX-3 and RX-4.

Model Evolution

Predecessor:

Mazda RX-3 (S102/S124 chassis)

Successor:

Mazda RX-7 (SA22C chassis) - RX-4 was the last model to use the 'Grand Familia' platform before the dedicated RX-7.

Production

Production Years:

1972-1977 (RX-4 name primarily for export, Japan models often called Grand Familia Rotary)

Manufacturing Location:

Japan

Market Introduction:

Introduced in 1972 in Japan as the Grand Familia Rotary, rebranded as RX-4 for export markets, including North America and Europe.

🏆 Awards & Recognition

Recognitions

Rotary Engine Recognition:

Mazda's rotary engine technology itself received recognition for innovation and performance during this period.

Ratings

Contemporary Reviews:

Generally well-received for its performance and unique rotary engine. Praised for handling and sporty character compared to contemporary sedans and coupes.

Certifications

Emissions Standards:

Designed to meet emissions standards of the mid-1970s, which were becoming increasingly stringent, especially in the US.