🏷️ Basic Information

Make:

Jeep

Model:

CJ-6

Year:

1975

Chassis Code:

CJ-6

👋 Introduction

Vehicle Market:

Compact, rugged off-road utility vehicle.

Historical Significance:

A long-wheelbase variant of the iconic CJ series, offering increased utility and passenger space for its era.

Competitors:

While few direct competitors offered the same blend of off-road prowess and open-air utility, vehicles like the Toyota Land Cruiser and International Scout were in a similar functional space.

Off Road Capability:

Renowned for its robust 4x4 system, solid axles, and high ground clearance.

Utility:

The longer wheelbase and CJ-6 body style provided greater cargo capacity and seating for more passengers compared to the standard CJ-5.

Value:

Essential for owners and mechanics needing to perform accurate and complete maintenance and repairs on a classic Jeep.

📋 Manual Details

Primary Coverage:

Complete Service and Repair

Secondary Coverage:

Maintenance, Diagnostics, Troubleshooting

Estimated Page Count:

800-1000 (typical for comprehensive workshop manuals of this era)

Type:

Workshop Manual / Service Manual

Language:

English

Format:

Digital (likely PDF, potentially scanned pages from original print)

📖 Manual Coverage

Engine Mechanical:

Detailed disassembly, inspection, repair, and reassembly of engine components (cylinder head, block, pistons, crankshaft, camshaft, valve train).

Engine Electrical:

Ignition system, starting system, charging system, fuel delivery system (carburetor diagnostics and adjustment), emissions control systems.

Transmission Manual:

Service and repair of the T-90 3-speed manual transmission (if applicable to the 1975 CJ-6 configuration).

Transmission Automatic:

Service and repair of the TH400 3-speed automatic transmission (if applicable to the 1975 CJ-6 configuration).

Drivetrain:

Front and rear axle service, differential repair, transfer case (Dana 20) disassembly and repair, driveshaft and U-joint maintenance.

Suspension:

Front and rear leaf spring service, shock absorber replacement, steering linkage (tie rods, drag link) inspection and adjustment.

Brakes:

Front and rear drum brake service (wheel cylinders, brake shoes, springs), brake pedal, master cylinder, and brake lines inspection and replacement.

Electrical System:

Wiring diagrams, lighting system (headlights, taillights, turn signals), instrument cluster repair, horn, wiper system, fuse box functionality.

Fuel System:

Carburetor (e.g., Motorcraft 2100 or equivalent) overhaul, fuel pump testing, fuel line inspection.

Cooling System:

Radiator service, water pump replacement, thermostat testing, coolant hose inspection, heater core service.

Exhaust System:

Exhaust manifold inspection, muffler and pipe replacement, catalytic converter (if equipped) service.

Body And Frame:

Frame inspection and repair, body panel alignment, door, hood, and tailgate adjustments, interior trim removal and installation.

Chassis:

Frame reinforcement, mounting points, universal joints, wheel bearings.

Routine Maintenance:

Oil changes, filter replacements, lubrication, spark plug replacement, belt adjustment, fluid level checks.

Troubleshooting:

Systematic diagnostic procedures for common and uncommon issues across all vehicle systems.

Repair Overhaul:

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

Specification Settings:

Torque specifications, adjustment procedures (e.g., carburetor idle speed, ignition timing, clutch free play).

Wiring Diagrams:

Comprehensive electrical schematics for all vehicle systems.

Special Tools:

Identification and usage instructions for specialized tools required for certain repairs.

Depth:

Comprehensive, covering everything from basic adjustments to complete engine and transmission rebuilds.

📊 Manual Specifications

Digital Format:

Likely PDF; clarity and searchability depend on original scan quality.

Print Quality Notes:

N/A for digital, but original print quality would be standard for OEM manuals of the era (clear diagrams, legible text).

Binding Type Notes:

N/A for digital, but original print manuals were typically perfect bound or spiral bound for lay-flat use.

Paper Type Notes:

N/A for digital, but original print manuals used durable, often coated paper for longevity in workshop environments.

⚙️ Engine Specifications

Engine Type:

Inline 6-Cylinder Overhead Valve (OHV)

Engine Code Or Name:

Jeep Hurricane I6 (232 cu in / 3.8 L) or Dauntless V6 (225 cu in / 3.7 L) depending on configuration.

Displacement:

232 cu in (3.8 L) or 225 cu in (3.7 L)

Bore X Stroke:

232: 3.75 in x 3.50 in (95.25 mm x 88.9 mm); 225 V6: 3.75 in x 3.4375 in (95.25 mm x 87.31 mm)

Horsepower:

Approx. 145-155 hp (V6) or 130-140 hp (I6) @ 4000-4400 RPM (Varies by specific engine and tuning).

Torque:

Approx. 200-220 lb-ft (V6) or 190-200 lb-ft (I6) @ 1600-2000 RPM (Varies by specific engine and tuning).

Fuel Delivery:

Single-barrel or two-barrel carburetor (e.g., Motorcraft 2100 or Rochester Quadrajet).

Fuel Type:

Unleaded gasoline

Ignition Type:

Distributor, points, and coil.

Oil Capacity:

5 US quarts (4.7 liters) with filter for 232/225 engines (check manual for exact spec).

Cooling Type:

Pressurized liquid cooling system.

🔧 Transmission

Transmission Type:

3-speed Manual Transmission (e.g., T-90)

Transmission Type:

3-speed Automatic Transmission (e.g., Turbo-Hydramatic TH400)

Transfer Case:

Dana 20 2-speed (4x4) transfer case with selectable 2WD/4WD engagement.

Manual Transmission Fluid:

API GL-4, SAE 80W or 90W gear oil (check manual for exact specification).

Automatic Transmission Fluid:

Dexron-III (or equivalent specification for TH400).

📐 Dimensions

Wheelbase:

104 inches (2642 mm)

Overall Length:

Approx. 153 inches (3886 mm)

Overall Width:

Approx. 69 inches (1753 mm)

Overall Height:

Approx. 65 inches (1651 mm) (to windshield top, without top)

Curb Weight:

Approx. 3000-3400 lbs (1360-1542 kg), depending on engine and equipment.

Gross Vehicle Weight Rating:

Approx. 4700-5000 lbs (2132-2268 kg).

Wheel Bolt Pattern:

5 on 5.5 inches (139.7 mm)

Standard Tire Size:

Typically 215/75R15 or 31x10.50R15 (depending on original equipment and trim).

🛡️ Safety Features

Crash Test Ratings:

No formal crash test ratings available for vehicles of this era in the modern sense.

Braking System:

Front and rear drum brakes.

Steering System:

Recirculating ball steering (manual, power steering optional).

Seat Belts:

Lap belts and/or shoulder belts (depending on configuration and regulations at time of sale).

Frame Construction:

Body-on-frame construction with a robust ladder frame for off-road durability.

💡 Technology Features

Infotainment System:

Basic AM radio (optional), no advanced infotainment features.

Driver Assistance Features:

None.

Connectivity Features:

None.

🔧 Maintenance

Oil Change Interval:

Every 3,000 miles or 6 months (typical for the era).

Transmission Fluid Change:

Every 24,000 miles or 24 months (typical).

Differential Fluid Change:

Every 24,000 miles or 24 months (typical).

Tune Up Interval:

Every 12,000-15,000 miles (includes spark plugs, points, condenser, timing adjustment).

Engine Oil Viscosity:

API SF or SG, SAE 10W-30 or 10W-40 recommended (check manual for specific OEM recommendation).

Coolant Type:

Ethylene glycol based antifreeze, 50/50 mix with water.

Brake Fluid Type:

DOT 3 or DOT 4.

Common Issues:

Rust (especially on floor pans, fenders, and body mounts), carburetor tuning problems, electrical gremlins, worn leaf springs and bushings, potential leaks from seals and gaskets.

Chassis Lubrication:

Regular lubrication of universal joints, kingpins, and steering components is critical for longevity.

📚 Vehicle History

Jeep Legacy:

Jeep has a long history dating back to WWII military vehicles, renowned for its go-anywhere capability and ruggedness.

Cj Lineage:

The CJ-6 is a derivative of the CJ-5, introduced in 1954 and produced until 1983. The CJ-6 featured a longer wheelbase (104 inches vs. 81 inches for CJ-5) and was available in two-door or four-door configurations, offering more utility.

Production Years:

CJ-6 was produced from 1955 to 1975.

Manufacturing Location:

USA (Toledo, Ohio)

🏆 Awards & Recognition

Off Road Awards:

The Jeep CJ series, including the CJ-6, is widely recognized for its enduring off-road capability and iconic status among enthusiasts.

Consumer Ratings:

Subjective ratings would vary, but it's highly regarded by off-road communities for its ruggedness and modifiability.

Safety Certifications:

None relevant to modern standards.