Mazda RX4 Workshop Engine Service Repair Manual

Prix habituel: $16.99
Prix soldé: $16.99
Prix habituel
Prix unitaire: par

26 people are viewing this right now

Taper: Car

Distributeur:

UGS: 83784

Mots clés: Car Cars Mazda Misc RX4

Variantes de produits

Description

The Mazda RX4, produced from 1972 to 1977, represents a significant chapter in automotive history, showcasing Mazda's pioneering spirit with its rotary (Wankel) engine technology. Available in sedan, coupe, and wagon body styles, with chassis codes S124A and LA2VS respectively, the RX4 was engineered to deliver a unique driving experience powered by the compact yet potent 12A rotary engine. This engine, displacing 654 cc per rotor, offered an equivalent displacement of 1308 cc and produced between 100-135 horsepower, providing smooth power delivery and a distinct engine note. Its innovative design and performance capabilities helped establish Mazda's reputation for engineering excellence and cemented the rotary engine's place in the automotive landscape. This comprehensive workshop service repair manual provides in-depth technical information essential for the maintenance, diagnosis, and repair of your Mazda RX4. It covers critical systems including the rotary engine (12A), fuel system, ignition, cooling, and lubrication. Detailed procedures for routine maintenance, troubleshooting common issues such as apex seal wear and carburetor problems, and complete engine rebuilds are included. Furthermore, the manual offers vital specifications, torque values, and tolerances, making it an indispensable resource for owners and mechanics alike to ensure the optimal performance and longevity of this iconic rotary-powered vehicle.

🏷️ Basic Information

Identification

Make:

Mazda

Model:

Model Codename:

S124A (Sedan/Coupe), LA2VS (Wagon)

Codes

Chassis Codes:

S124A, LA2VS

👋 Introduction

Market Position

Target Audience:

Owners and mechanics of Mazda RX4 vehicles seeking in-depth repair and maintenance knowledge.

Competitive Analysis

Manual Value:

Provides essential technical data often unavailable in owner's manuals, crucial for maintaining rotary engines.

Key Features

Comprehensiveness:

Focuses specifically on the engine service and repair, offering detailed procedures for the unique rotary powerplant.

📋 Manual Details

Coverage Areas

Engine:

Rotary (12A)

Fuel System:

Carburetor and Injection (depending on market/variant)

Ignition System:

Electronic

Cooling System:

Water-cooled

Lubrication System:

Wet sump

Page Count

Estimated Pages:

300-500 (typical for comprehensive workshop manuals)

Manual Type

Type:

Workshop Service Repair Manual

Language

Language:

English

Format

Format:

PDF Download

📖 Manual Coverage

Systems Covered

Engine Mechanical:

Disassembly, inspection, assembly, timing, seals, gaskets, rotor housings, apex seals, eccentric shaft, oil pump, water pump, intake manifold, exhaust manifold.

Fuel And Emission Control:

Carburetor adjustment and overhaul (e.g., Hitachi, Mikuni), fuel pump, fuel filter, emissions control systems (e.g., EGR, thermal reactor).

Ignition System:

Distributor, ignition coils, spark plugs, wiring, timing adjustments, electronic control unit (ECU) if applicable.

Cooling System:

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

Lubrication System:

Engine oil, oil filter, oil pan, oil pump, oil cooler, oil specifications.

Procedures Included

Routine Maintenance:

Oil changes, filter replacements, spark plug checks, coolant flushes, lubrication points.

Troubleshooting:

Diagnosis of common engine problems, electrical issues, starting problems, performance issues, diagnostic charts.

Repair And Overhaul:

Detailed step-by-step instructions for engine rebuilds, component replacement (e.g., seals, bearings, ignition components), carburetor overhauls.

Specifications And Tolerances:

Torque values, clearances, measurements, rebuild specifications for critical engine components.

Technical Depth

Depth:

Comprehensive engine rebuild and diagnostic procedures, including internal component specifications and tolerances. Suitable for professional mechanics and experienced DIY enthusiasts.

📊 Manual Specifications

File Format

Quality:

High-resolution, searchable PDF with clear diagrams and text.

Print Quality

Scalability:

Optimized for printing, with sharp lines and legible text for diagrams.

Binding Type

Digital Format Advantage:

Instant download, easily accessible on multiple devices, printable pages.

Paper Type

Digital Equivalent:

No physical paper; delivered as a digital file.

⚙️ Engine Specifications

Primary Engine

Engine Type:

Mazda 13B Rotary (Wankel)

Engine Code:

Rotor Displacement:

654 cc per rotor (total 1308 cc equivalent displacement)

Rotor Housing Material:

Cast iron or similar durable alloy

Apex Seal Material:

Historically, carbon or phenolic resin, later variations used metal composites.

Performance

Horsepower Range:

Approximately 100-135 hp (depending on market and emission controls)

Torque Range:

Approximately 110-130 lb-ft

Fuel System

Carburetion:

Twin-choke downdraft carburetors (e.g., Hitachi SH20, Mikuni PHH)

Fuel Type:

Unleaded gasoline (91 RON or higher recommended)

Ignition System

Ignition Timing:

Typically specified in degrees Before Top Dead Center (BTDC), adjustable via distributor.

Cooling System

Coolant Type:

Ethylene glycol based antifreeze/coolant mixture (50/50 recommended).

Lubrication System

Oil Capacity:

Approximately 5.5-6.0 quarts (5.2-5.7 liters) with filter change.

Oil Viscosity Recommendation:

API SG or higher, SAE 10W-30 or 10W-40 commonly recommended for varying temperatures.

Other

Emissions Control Systems:

Thermal reactor, EGR (Exhaust Gas Recirculation), air injection (depending on market and year).

🔧 Transmission

Standard

Transmission Type:

4-speed Manual

Optional

Transmission Type:

3-speed Automatic (TorqueFlite based or Mazda's own design)

Features

Gear Ratios Manual:

Specific ratios for 1st, 2nd, 3rd, 4th, and Reverse gears would be detailed in the manual.

Automatic Transmission Fluid Type:

Dexron II or equivalent automatic transmission fluid (ATF).

📐 Dimensions

Exterior

Length:

Sedan/Coupe: ~4250 mm (167.3 in)

Width:

Sedan/Coupe: ~1600 mm (63.0 in)

Height:

Sedan/Coupe: ~1375 mm (54.1 in)

Weights

Curb Weight:

Approximately 1150-1250 kg (2535-2755 lbs)

🛡️ Safety Features

Ratings

Crash Test Data:

Limited comprehensive modern crash test data available due to era of production.

Active Features

Brakes:

Front disc brakes, rear drum brakes. Power assist typically standard.

Passive Features

Seatbelts:

Front lap and shoulder belts. Rear lap belts.

💡 Technology Features

Infotainment

Entertainment System:

Basic AM/FM radio, optional cassette player.

Driver Assistance

Features:

No electronic driver assistance features typical of modern vehicles.

Connectivity

Features:

No integrated connectivity features.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Typically every 3,000-5,000 miles (4,800-8,000 km) or 3-6 months, whichever comes first.

Spark Plug Inspection Replacement:

Inspect every 15,000 miles (24,000 km), replace as needed. Rotary spark plugs are critical.

Air Filter Replacement:

Inspect every 7,500 miles (12,000 km), replace as needed or annually.

Coolant Flush Interval:

Every 2 years or 30,000 miles (48,000 km).

Fluid Specifications

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid.

Manual Transmission Fluid:

API GL-4 gear oil, SAE 75W-90 or 80W-90 (capacity approx. 1.8-2.0 liters).

Known Issues

Apex Seal Wear:

Common issue with high-mileage rotary engines, leading to loss of compression, poor starting, and rough running. Requires engine rebuild.

Carburetor Issues:

Deterioration of rubber components, vacuum leaks, and tuning challenges common with older carburetors.

Oil Consumption:

Rotary engines inherently consume some oil for lubrication; the manual will detail normal consumption rates and how to monitor.

Cooling System Leaks:

Aging hoses, seals, and potential corrosion in the cooling system. Overheating can be detrimental to rotary engines.

📚 Vehicle History

Brand Heritage

Mazda Rotary Pioneering:

Mazda's commitment to rotary engine technology, pioneered by Felix Wankel and developed extensively by Mazda.

Model Evolution

Development Context:

Introduced as Mazda's entry into the global market, showcasing the performance and unique characteristics of the rotary engine.

Production

Production Years:

1972-1977

Manufacturing Location:

Japan

🏆 Awards & Recognition

Recognitions

Rotary Engine Prowess:

The RX4 itself was a significant model that helped establish Mazda's reputation for performance and innovation with the rotary engine.

Ratings

Performance Reviews:

Praised for its smooth power delivery and unique engine characteristics by period automotive journalists.