🏷️ Basic Information

Make:

Jeep

Model:

CJ-5

Year:

1966

Chassis Code:

CJ-5

👋 Introduction

Target Audience:

Enthusiasts, DIY mechanics, and professional repair shops working on vintage Jeep CJ-5 vehicles.

Historical Significance:

The CJ-5 is a legendary off-road vehicle, and this manual provides essential information for its upkeep and restoration.

Value Proposition:

Provides the critical technical data and procedures necessary for maintaining and repairing a classic Jeep, often unavailable through other means.

Comprehensiveness:

Covers virtually all aspects of vehicle servicing and repair, reflecting the era's comprehensive approach to documentation.

Reliability:

Based on factory service data, offering accurate and dependable repair information.

📋 Manual Details

Manual Type:

Service Repair Workshop Manual

Language:

English

Format:

Digital (Likely PDF)

Estimated Page Count:

Varies by specific publication, but comprehensive workshop manuals for this era typically range from 300-700 pages.

📖 Manual Coverage

Engine:

Detailed diagnosis, repair, overhaul, and specifications for inline-4 and inline-6 engines commonly found in 1966 CJ-5s.

Transmission:

Service and repair procedures for manual transmissions (e.g., T90, T14) including clutch, gearbox, and transfer case.

Drivetrain:

Axle servicing, differential repairs, driveshaft maintenance, and 4WD system operation and repair.

Brakes:

Drum brake system diagnosis, repair, and adjustment; master cylinder and wheel cylinder servicing.

Steering:

Steering gear adjustment, repair, and component replacement; power steering (if applicable).

Suspension:

Leaf spring service, shock absorber replacement, and chassis lubrication procedures.

Electrical System:

Wiring diagrams, ignition system diagnosis, starting and charging system repair, lighting, and accessory servicing.

Fuel System:

Carburetor adjustment and rebuild, fuel pump servicing, fuel tank and line maintenance.

Cooling System:

Radiator, water pump, thermostat, and fan servicing.

Exhaust System:

Component replacement and repair.

Body And Frame:

Body panel repair, frame inspection and straightening, door and hardware adjustments.

Maintenance:

Scheduled maintenance tasks, lubrication points, filter replacements, and fluid checks.

Troubleshooting:

Diagnostic charts and symptom-based troubleshooting for common mechanical and electrical issues.

Repair:

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

Overhaul:

Complete engine, transmission, and axle rebuild procedures with detailed specifications.

Adjustments:

Carburetor, ignition timing, brake, clutch, and steering adjustments.

Diagnostic Capabilities:

Advanced diagnostics for engine performance, electrical faults, and mechanical issues.

Rebuild Instructions:

Comprehensive, factory-level rebuild procedures for major mechanical components.

Specifications:

Torque values, clearances, timing settings, fluid capacities, and electrical resistance measurements.

Wiring Diagrams:

Detailed, often color-coded, wiring diagrams for the entire vehicle.

📊 Manual Specifications

File Type:

Likely PDF, optimized for digital viewing and printing.

Searchability:

Generally searchable text if created from scanned original documents with OCR.

Image Resolution:

High-resolution scans of original diagrams and photographs, ensuring clarity for technical illustrations.

Original Binding:

Typically bound with staples or spiral binding for ease of use in a workshop environment.

Original Paper:

Durable paper stock to withstand workshop conditions.

⚙️ Engine Specifications

Engine Options:

Likely includes the Hurricane F-Head Inline-4 (2.2L) and potentially the Dauntless V6 (3.7L).

Engine Code F Head:

F134 (Hurricane)

Engine Code V6:

V6-225 (Dauntless)

Horsepower F Head:

Approx. 75 hp @ 3600 rpm (F134 Hurricane)

Torque F Head:

Approx. 114 lb-ft @ 1800 rpm (F134 Hurricane)

Horsepower V6:

Approx. 155 hp @ 4200 rpm (V6-225 Dauntless)

Torque V6:

Approx. 220 lb-ft @ 2000 rpm (V6-225 Dauntless)

Carburetion F Head:

Single barrel downdraft carburetor (e.g., Willys M335, Carter YF).

Carburetion V6:

Two barrel downdraft carburetor (e.g., Rochester 2GC).

Ignition Type:

Distributor-based, points and condenser ignition system.

Coolant Type Specification:

Typically a 50/50 mix of permanent antifreeze and water, or specified commercial coolant.

🔧 Transmission

Transmission Options:

Manual transmission only.

Manual Transmission Models:

Commonly the Willys T90, or later the T14A (3-speed).

Transfer Case:

Dana 18 or Dana 20 (depending on drivetrain configuration) providing 2WD and 4WD options.

Transmission Fluid:

GL-4 gear oil, viscosity typically SAE 80W or 90W.

Transfer Case Fluid:

GL-4 gear oil, viscosity typically SAE 80W or 90W.

📐 Dimensions

Wheelbase:

Approximately 81 inches (2057 mm)

Length:

Approximately 130 inches (3302 mm) (without spare tire/bumper)

Width:

Approximately 60 inches (1524 mm) (body)

Height:

Approximately 50 inches (1270 mm) (to top of windshield frame, without top)

Curb Weight:

Approximately 2,500 - 3,000 lbs (1134 - 1361 kg)

Gross Vehicle Weight Rating:

Around 4,000 lbs (1814 kg)

Wheel Bolt Pattern:

5 x 5.5 inches (139.7 mm)

Typical Tire Size:

6.50-16, 7.00-16, or similar bias-ply off-road tires.

🛡️ Safety Features

Crash Test Ratings:

No formal crash test ratings (like NHTSA/IIHS) were performed on vehicles of this era and design.

Braking System:

Hydraulic drum brakes on all four wheels.

Seat Belts:

Optional or basic lap belts may have been available; 3-point belts were not standard.

Rollover Protection:

No integrated rollover protection; basic soft or hard tops offered minimal structural integrity.

💡 Technology Features

Audio System:

Basic AM radio, often optional. No advanced infotainment features.

Dashboard Features:

Analog gauges for speed, fuel, oil pressure, and temperature. Minimal dashboard electronics.

Assistance Systems:

None. This is a mechanically operated vehicle from an era predating modern driver-assistance technologies.

Connectivity Features:

None. Connectivity was limited to the vehicle's mechanical and electrical systems.

🔧 Maintenance

Oil Change Interval:

Typically every 3,000 miles or 6 months, depending on driving conditions. Manual will provide specific guidance.

Tune Up Interval:

Points, condenser, spark plugs usually every 10,000-12,000 miles. Carburetor and timing adjustments as needed.

Engine Oil Type:

API Service SG or similar, viscosity typically SAE 10W-30 or 10W-40, depending on climate. Manual will confirm SAE grade and API classification.

Engine Oil Capacity:

Approx. 5 quarts (4.7 liters) with filter for F134, and 5 quarts for V6-225.

Coolant Capacity:

Approximately 10-12 quarts (9.5-11.4 liters).

Brake Fluid Type:

DOT 3 hydraulic brake fluid.

Common Wear Items:

Clutch wear, brake system components (wheel cylinders, shoes), carburetor tuning, ignition points, exhaust system leaks, U-joint wear.

Rust Prone Areas:

Fender wells, floor pans, rocker panels, tailgate areas, and frame rails.

Chassis Grease Points:

Extensive use of grease fittings on suspension components, steering linkage, and driveshaft U-joints.

📚 Vehicle History

Jeep Legacy:

The Jeep CJ series is a direct descendant of the original World War II Willys MB 'Jeep', renowned for its off-road prowess and utility.

Cj Series Context:

The CJ-5 succeeded the CJ-3B and was produced for a remarkably long period (1954-1983). The 1966 model year represents a key phase in its development, often featuring the introduction of the Dauntless V6 engine option.

Manufacturer:

Willys Motors (later Kaiser Jeep Corporation, then American Motors Corporation - AMC).

Manufacturing Locations:

Primarily Toledo, Ohio, USA.

🏆 Awards & Recognition

Off Road Legacy:

The CJ-5 itself is widely recognized as an iconic and capable off-road vehicle, often earning accolades for its durability and versatility in enthusiast communities and off-road publications.

Consumer Ratings:

Contemporary reviews and owner satisfaction varied, with praise for its off-road performance and criticism often directed at ride comfort and on-road manners.