Primary Coverage:
Comprehensive repair and maintenance for Mazda RX-2 and RX-3 Capella models.
Additional Sections:
General information, service data, body, and more.
Type:
Factory Workshop Manual / Repair Manual
Language:
English (based on typical factory manual translations)
Engine:
Rotary engine (12A, possibly 13B variants) overhaul, tuning, and diagnostics.
Transmission:
Manual and automatic transmission repair, overhaul, and clutch service.
Suspension:
Front and rear suspension components, alignment, shock absorber and spring replacement.
Steering:
Steering gearbox, linkages, and power steering system (if applicable) repair.
Brakes:
Disc and drum brake system overhaul, hydraulic system components, parking brake.
Body:
Body panel repair, rust prevention, interior trim removal/installation, glass replacement.
Air Conditioner:
Air conditioning system service, refrigerant handling, component replacement.
Electrical:
Comprehensive electrical system diagnostics, component testing, starter, alternator, lighting.
Wiring Diagrams:
Detailed wiring schematics for all major electrical systems.
Maintenance Procedures:
Routine service, fluid changes, filter replacements, tune-ups, lubrication.
Repair Procedures:
Step-by-step instructions for component removal, repair, and reinstallation.
Troubleshooting:
Diagnostic charts and procedures for identifying and resolving common faults.
Engine Rebuild Procedures:
Detailed steps for rotor housing inspection, apex seal installation, bearing replacement, and assembly.
Suspension Alignment Specs:
Specifications for front and rear wheel alignment (caster, camber, toe).
Electrical Troubleshooting Guides:
Flowcharts and symptom-based troubleshooting for electrical issues.
Torque Specifications:
Critical torque values for engine components, chassis fasteners, and suspension parts.
Depth:
Factory-level technical detail, suitable for professional mechanics and dedicated enthusiasts.
Diagnostic Tools:
While not specific to electronic scanners (not prevalent for the era), it details mechanical diagnostic methods and special tool requirements.
Engine Type:
Rotary (Wankel)
Common Engine Codes:
12A (573cc per rotor, 1146cc total displacement) for RX-2 and early RX-3; potential for early 13B (654cc per rotor, 1308cc total displacement) in later RX-3 models.
Typical Horsepower 12A:
Approximately 110-130 hp (varies by market and emissions controls).
Typical Torque 12A:
Approximately 110-120 lb-ft (varies by market and emissions controls).
Carburetion:
Typically twin downdraft carburetors (e.g., Hitachi/SU/Weber conversions).
Fuel Type:
Unleaded gasoline (octane rating dependent on engine tuning and era).
Oil Type:
Specific rotary engine oil (e.g., Castrol API-SG or equivalent with appropriate SAPS levels for apex seals).
Oil Capacity:
Approximately 5.0 - 5.5 liters (including oil cooler).
Coolant Type:
Ethylene glycol-based coolant mixed with distilled water (50/50).
Thermostat Rating:
Typically 82°C (180°F).
Type:
4-speed or 5-speed manual transmission.
Type:
3-speed automatic transmission.
Clutch Type:
Dry, single-plate diaphragm spring clutch.
Transmission Fluid:
GL-4 gear oil (e.g., SAE 75W-90 or 80W-90).
Body Styles:
Coupe, Sedan, Hardtop Coupe, Station Wagon (Capella).
Wheelbase:
Approx. 2475 mm (RX-2), Approx. 2460-2500 mm (RX-3, varies by body style).
Curb Weight:
Approximately 950 - 1100 kg (depending on body style and configuration).
Gross Vehicle Weight Rating:
Not explicitly stated but derived from curb weight and payload.
Oil Change Interval:
Typically every 5,000 km or 6 months, whichever comes first (critical for rotary engines).
Spark Plug Replacement:
As per manual, often at 20,000-40,000 km intervals, using specific dual-spark plugs.
Transmission Fluid Change:
Recommended every 40,000-60,000 km or as per manual.
Differential Oil Change:
Recommended every 40,000-60,000 km or as per manual.
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid.
Coolant Capacity:
Approximately 6.0 - 7.0 liters.
Washer Fluid:
Water or dedicated washer fluid.
Apex Seals:
Wear and failure of apex seals, leading to loss of compression and poor performance. Regular oil changes and proper engine warm-up are crucial.
Carburetor Issues:
Carburetor wear, vacuum leaks, and tuning difficulties due to age.
Rust:
Prone to rust, especially in wheel arches, sills, and floor pans, due to age and environmental exposure.
Cooling System:
Radiator leaks, hose degradation, and potential for overheating if not maintained.
Rotary Pioneering:
Mazda's commitment to the rotary engine, starting with the Cosmo and continuing through these models, cemented its reputation for automotive innovation.
Rx2 Introduction:
Introduced in 1970, the RX-2 was one of Mazda's early rotary-powered cars, building on the Cosmo's success.
Rx3 Capella Introduction:
The Capella (marketed as RX-3 in many export markets) debuted in 1971, offering a more mainstream design with rotary power, becoming a significant seller.
Series Updates:
Both models saw design refreshes and mechanical updates throughout their production runs.
Production Period:
RX-2: 1970-1978; RX-3: 1971-1978.
Manufacturing Location:
Japan.
