🏷️ Basic Information

Make:

Jeep

Model:

CJ-6

Generation Name:

CJ Series (CJ-5, CJ-6, CJ-7)

Generation Years:

1955-1975 (for CJ-6)

Chassis Code:

CJ-6

👋 Introduction

Segment:

Compact, utilitarian off-road utility vehicle.

Target Audience:

Military, agricultural, recreational off-roaders, and general utility users seeking ruggedness and simplicity.

Competitors:

Willys CJ-series, International Harvester Scout, early Ford Bronco.

Body Style:

Long-wheelbase convertible utility vehicle with removable doors and top.

Drivetrain:

Four-wheel drive (4WD) system standard, often with a two-speed transfer case for enhanced off-road capability.

Chassis Design:

Body-on-frame construction, known for durability and off-road resilience.

📋 Manual Details

Covered Years:

1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975

Estimated Page Count:

Detailed estimation based on typical workshop manuals of the era and scope. Likely between 800-1500 pages.

Manual Type:

Workshop Service Repair Manual

Language:

English

Format:

PDF

📖 Manual Coverage

Engine:

Detailed diagnosis, repair, and overhaul of all engine options available for the CJ-6 during this period (e.g., Hurricane F-Head I4, Dauntless V6, and potentially other industrial or truck engines adapted).

Fuel System:

Carburetor (e.g., Carter WCD, Rochester) repair, adjustment, and troubleshooting; fuel pump, fuel lines, fuel tank servicing.

Ignition System:

Distributor, spark plugs, ignition coil, wiring harness, timing adjustments.

Cooling System:

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

Exhaust System:

Muffler, exhaust pipes, catalytic converter (if applicable late models), gasket replacement.

Transmission:

Service, repair, and overhaul of manual transmissions (e.g., T90, T86, T14A, T15A) and any associated transfer cases (e.g., Dana 18, Dana 20).

Clutch:

Clutch assembly, pressure plate, clutch disc, release bearing, hydraulic or mechanical clutch linkage repair.

Drivetrain:

Front and rear differentials, driveshafts, U-joints, axle shafts, wheel bearings.

Suspension:

Leaf spring systems (front and rear), shock absorbers, bushings, greasing points, chassis lubrication.

Steering:

Steering box (e.g., Ross cam and lever), tie rods, drag links, steering linkage components, power steering (if equipped).

Brakes:

Hydraulic brake system diagnosis, repair, and overhaul for drum brakes (front and rear); master cylinder, wheel cylinders, brake lines, brake fluid specifications.

Electrical System:

12-volt electrical system, battery, alternator/generator, starter motor, wiring diagrams, lighting system, ignition switch, gauges.

Body And Frame:

Frame inspection and repair, body panel removal and installation, doors, windshield frame, convertible top assembly, interior trim.

Heating And Ventilation:

Heater core, blower motor, ducting, defrost system (if equipped).

Maintenance:

Oil changes, filter replacements, lubrication schedules, tune-up procedures, fluid checks and top-offs.

Troubleshooting:

Systematic diagnostic guides for common and uncommon problems across all major vehicle systems.

Repair:

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

Overhaul:

Complete rebuild procedures for engines, transmissions, differentials, and other major mechanical components.

Specifications:

Torque specifications for critical fasteners, engine timing settings, valve clearances, fluid capacities, and component clearances.

Depth:

Comprehensive, covering everything from routine maintenance to full engine rebuilds and electrical system diagnostics. Designed for professional mechanics and experienced DIY enthusiasts.

📊 Manual Specifications

File Type:

PDF (Portable Document Format)

Searchable Text:

Typically high-quality PDFs allow for text searching, improving usability for finding specific information quickly.

Printability:

Designed to be printable, allowing users to create physical copies of relevant sections for workshop use.

Binding Format:

N/A (Digital PDF)

Paper Quality:

N/A (Digital PDF)

⚙️ Engine Specifications

Engine Code 1:

F-Head Hurricane (Standard for many early models)

Engine Type 1:

Inline 4-cylinder, overhead valve (OHV)

Displacement 1:

134 cu in (2.2 L)

Horsepower 1:

Approx. 75 HP @ 4000 RPM

Torque 1:

Approx. 114 lb-ft @ 1750 RPM

Engine Code 2:

Dauntless V6 (Optional from mid-1960s)

Engine Type 2:

V6, overhead valve (OHV)

Displacement 2:

225 cu in (3.7 L)

Horsepower 2:

Approx. 155 HP @ 4200 RPM

Torque 2:

Approx. 230 lb-ft @ 2200 RPM

Carburetor:

Single barrel carburetor (e.g., Carter WCD 733s for Hurricane, Rochester for V6)

Fuel Type:

Unleaded gasoline (likely leaded for earlier models, manual will specify octane rating)

🔧 Transmission

Transmission Type:

3-speed manual transmission (e.g., T90, T14A)

Transmission Type Optional:

4-speed manual transmission (e.g., T15A)

Transfer Case:

Two-speed transfer case (e.g., Dana 18, Dana 20) with selectable 4WD and neutral.

Transmission Fluid:

GL-4 Gear Oil (e.g., SAE 80W or 90W, manual will confirm specific viscosity based on temperature ranges).

Transfer Case Fluid:

GL-4 Gear Oil (e.g., SAE 80W or 90W, manual will confirm).

📐 Dimensions

Wheelbase:

104 inches (2642 mm)

Length:

Approx. 157 inches (3988 mm) (varies slightly by year and body style variations)

Width:

Approx. 62 inches (1575 mm)

Height:

Approx. 65-70 inches (1651-1778 mm) (with top and without load)

Cargo Volume:

Significant, with the longer CJ-6 body offering more rear cargo space than a CJ-5, suitable for gear or passengers.

Curb Weight:

Approx. 2700-3200 lbs (1225-1451 kg) (varies with engine and equipment)

Gross Vehicle Weight Rating Gvwr:

Approx. 4100-4700 lbs (1860-2132 kg) (varies by model and configuration)

🛡️ Safety Features

Crash Test Data:

No modern crash test ratings available due to the era of manufacture. Vehicle design prioritizes utility and off-road capability over passive safety features.

Braking System:

Hydraulic drum brakes on all four wheels. No ABS or power assist typically standard.

Seat Belts:

Optional or basic lap belts were common for the period. The manual will detail any factory-installed safety restraints.

Roll Over Protection:

No integrated roll cage; relies on sturdy windshield frame. Aftermarket roll bars are common for enhanced safety.

💡 Technology Features

Radio:

Basic AM radio was optional or standard on some trims. Manual covers basic radio system components.

ABS:

Not available on CJ-6 models from this era.

Bluetooth:

Not available on CJ-6 models from this era.

🔧 Maintenance

Oil Change Interval:

Typically every 3,000-5,000 miles or 6 months, whichever comes first, depending on driving conditions. Manual will provide specific guidance.

Grease Points:

Regular chassis lubrication at specified intervals (e.g., every oil change or 1,000 miles) for suspension and steering components.

Tune Up Interval:

Spark plug replacement, ignition timing adjustment, and carburetor check typically recommended every 12,000-20,000 miles.

Engine Oil Type:

API Service Classification SC, SD, or SE. Viscosity likely 10W-30 or 10W-40 depending on climate. Manual will specify.

Coolant Type:

Ethylene Glycol based antifreeze. Manual will specify mixture ratio (e.g., 50/50).

Brake Fluid Type:

DOT 3 hydraulic brake fluid.

Carburetor Wear:

Wear in accelerator pump and choke components leading to rough idle or poor performance.

Suspension Bushings:

Degradation of rubber bushings in leaf springs and shackles leading to clunking or poor ride quality.

Electrical Corrosion:

Corrosion in wiring harnesses and connectors due to age and environmental exposure.

Frame Rust:

Corrosion of the frame, especially in areas exposed to road salt and moisture.

Drum Brake Adjustment:

Tendency for drum brakes to require frequent adjustment due to wear.

📚 Vehicle History

Jeep Legacy:

Direct descendant of the WWII Willys Jeep, known for unparalleled off-road capability and ruggedness.

Cj Series Context:

The CJ-6 was a longer-wheelbase variant of the CJ-5, introduced to appeal to a broader market needing more cargo or passenger capacity, often associated with military or export models.

Production Years Cj6:

1955-1975

Manufacturing Location:

Toledo, Ohio, USA.

🏆 Awards & Recognition

Offroad Capability Acclaim:

The CJ-6, like its CJ siblings, is widely recognized for its exceptional off-road prowess and iconic status among enthusiasts.

Reliability Perception:

Generally perceived as reliable due to its simple mechanical design, though prone to wear and requiring diligent maintenance.

Military Variants:

The CJ platform served as the basis for various military vehicles, underscoring its robust design and adaptability.