Mazda RX 3 1975 Workshop Service Repair Manual

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🏷️ Basic Information Identification Make: Mazda Model: RX-3 Year: 1975 Chassis Code: Savy II (Japan) / Mizer (some export markets) Generation Generation: First Generation (First Facelift) 👋 Introduction Market Position...

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类型: Car

斯库: 83871

标签: 1975 Car Cars Mazda RX 3 RX Models

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Description

🏷️ Basic Information

Identification

Make:

Mazda

Model:

Year:

Chassis Code:

Savy II (Japan) / Mizer (some export markets)

Generation

Generation:

First Generation (First Facelift)

👋 Introduction

Market Position

Description:

The Mazda RX-3 was a significant model for Mazda, showcasing their pioneering rotary engine technology in a compact, sporty package. It competed in the affordable sports coupe/sedan segment.

Competitive Analysis

Competitors:

Competed with vehicles like the Toyota Corolla Levin/Sprinter Trueno, Datsun 1200/Sunny, and other compact sporty cars of the era.

Key Features

Rotary Engine:

Distinctive rotary (Wankel) engine provided a unique driving experience and compact power unit.

Styling:

Offered in coupe, sedan, and station wagon body styles, with a focus on sporty and stylish design.

Manual Value

User Suitability:

Aimed at technicians, mechanics, and owners who want to perform repairs, maintenance, or learn about the vehicle's intricacies.

📋 Manual Details

Coverage Areas

General Maintenance:

Troubleshooting:

Engine Service Repair:

Transmission Service Repair:

Brake System:

Wiring Diagram:

Electrical System:

Suspension:

Periodic Lubrication:

Steering:

Cooling System:

Fuel Injection:

Fuel System:

Emission System:

Heater Air Conditioning:

Engine Control System:

Chassis Body:

Restraint System:

Interior:

Differential Drive:

Axle:

Page Count

Estimated Page Count:

Hundreds to Thousands

Manual Type

Type:

Workshop Service Repair Manual

Language

Language:

English

Format

File Format:

File Compression:

May require WinZip for larger files

Compatibility

Operating Systems:

All Versions of Windows & Mac

Requirements

Software:

Adobe PDF Reader

📖 Manual Coverage

Systems Covered

Engine Systems:

Rotary engine (12A) overhaul, component replacement, tuning, lubrication, cooling, fuel delivery (carburetor and early fuel injection on some variants).

Transmission Systems:

Manual and automatic transmission service, gear changes, clutch assembly, driveline components, differential service.

Braking Systems:

Front disc and rear drum brake systems, hydraulic lines, master cylinder, wheel cylinders, parking brake.

Electrical Systems:

Complete wiring diagrams, starter, alternator, ignition system, lighting, gauges, switches, fuses, battery service.

Suspension Steering:

Front independent suspension (struts, control arms), rear leaf spring suspension, power steering (if equipped), steering column, steering linkage.

Body Chassis:

Body panel repair, chassis lubrication, door mechanisms, window regulators, structural components.

Heating Cooling Ac:

Heater core, blower motor, defroster, and air conditioning system service (if factory equipped).

Fuel And Emission Systems:

Carburetor service and adjustment, fuel tank, fuel lines, emission control devices (e.g., air injection).

Procedures Included

Maintenance Procedures:

Routine checks, fluid changes, filter replacements, spark plug replacement (for piston variants, though RX-3 is rotary), lubrication points.

Diagnostic Procedures:

Troubleshooting guides for common drivability issues, electrical faults, and mechanical problems.

Repair Procedures:

Step-by-step instructions for component removal, disassembly, inspection, repair, and reassembly.

Rebuild Procedures:

Detailed instructions for engine rebuild (apex seals, rotor housing inspection), transmission overhaul, brake caliper/wheel cylinder rebuilding.

Electrical Troubleshooting:

Diagnosis of wiring issues, component testing using multimeters, fault finding based on symptoms.

Alignment Specifications:

Wheel alignment angles (camber, caster, toe), steering alignment.

Technical Depth

Depth:

Comprehensive factory-level detail, suitable for professional technicians and dedicated DIY enthusiasts. Includes torque specifications, clearances, timing settings, and diagnostic charts.

📊 Manual Specifications

File Format

Format:

Print Quality

Quality:

Great Quality, Printable

Binding Type

Binding:

Digital Download (PDF)

Paper Type

Paper Type:

N/A (Digital)

⚙️ Engine Specifications

Primary Engine

Engine Type:

Rotary (Wankel)

Engine Code:

Displacement:

1146 cc (effective displacement)

Performance

Horsepower:

Approx. 90-110 hp (depending on market and specific variant)

Torque:

Approx. 95-105 lb-ft (depending on market and specific variant)

Fuel System

Fuel Delivery:

Primarily downdraft carburetor (e.g., Hitachi), with potential for early fuel injection systems on some later or export models.

Engine Management

Ignition System:

Distributor-based ignition system, dual ignition on some performance variants.

🔧 Transmission

Standard

Transmission Type:

4-speed manual transmission

Optional

Transmission Type:

3-speed automatic transmission

Features

Clutch:

Single dry plate clutch (manual transmission)

📐 Dimensions

Exterior

Body Styles:

2-door Coupe, 4-door Sedan, 2-door Van/Wagon (GLA/GLB Series)

Weights

Curb Weight:

Approx. 950-1050 kg (depending on body style and equipment)

🛡️ Safety Features

Ratings

Era Safety:

Safety features commensurate with 1970s standards; likely lacked modern airbags or advanced driver-assistance systems. Seatbelts would be standard.

Passive Features

Seat Belts:

Standard (likely lap belts in front, lap belts in rear).

Structure:

Unitized body construction.

💡 Technology Features

Infotainment

Audio:

Basic AM/FM radio, possibly with an 8-track player or cassette option on higher trims or later models. Manual will cover dashboard disassembly for access.

Gauges:

Standard suite of gauges including speedometer, tachometer (often with a lower redline for rotary engines), fuel level, oil pressure, and coolant temperature.

Driver Assistance

Features:

None in the modern sense. Relied on driver skill and basic vehicle dynamics.

🔧 Maintenance

Service Intervals

Oil Change:

Typically every 3,000-5,000 miles or 3-6 months (refer to manual for exact specifications).

Air Filter:

Inspect every 15,000 miles, replace as needed.

Spark Plugs:

N/A (Rotary engine uses a different ignition system, not spark plugs in the traditional sense for combustion initiation).

Fluid Specifications

Engine Oil:

API SE/SF service classification, SAE 10W-30 or 10W-40 typically recommended. Rotary engines require specific oil types and can consume oil as part of their operation; manual will specify.

Coolant:

Ethylene glycol based antifreeze, typically 50/50 mix with distilled water. Capacity around 5-6 liters. Manual will specify type and capacity.

Brake Fluid:

DOT 3 or DOT 4 recommended. Capacity typically less than 1 liter. Manual will specify type and capacity.

Transmission Fluid:

Manual: GL-4 gear oil (e.g., SAE 75W-90 or 80W-90). Automatic: Dexron II or equivalent. Capacities around 1.5-2 liters for manual, 4-5 liters for automatic. Manual will specify.

Differential Fluid:

GL-5 gear oil (e.g., SAE 80W-90). Capacity around 1.2-1.5 liters. Manual will specify.

Known Issues

Apex Seals:

Wear of apex seals is a common issue in rotary engines, leading to compression loss and poor performance. Requires engine rebuild.

Oil Consumption:

Rotary engines inherently consume oil for lubrication of the rotor housings and seals. Owners must monitor and top up oil regularly.

Carburetor Tuning:

Carburetors can require frequent adjustment and cleaning, especially with age and fuel variations.

📚 Vehicle History

Brand Heritage

Rotary Pioneering:

The RX-3 was a key model in establishing Mazda's reputation for rotary engine technology, following the RX-2 (Capella Rotary).

Model Evolution

Facelift:

The 1975 model represents a facelift of the original RX-3, with minor styling updates, potentially including revised grille, lights, and trim.

Production

Production Period:

1971-1978 (RX-3 model line)