🏷️ Basic Information

Make:

Jeep

Model:

CJ, SJ, XJ, MJ, J10, J20

Year:

1981

Chassis Code Cj:

CJ-5, CJ-7

Chassis Code Sj:

SJ Wagoneer, SJ Grand Wagoneer, SJ J-Series Trucks (J10, J20)

Chassis Code Xj:

XJ Cherokee (early models)

Chassis Code Mj:

MJ Comanche (early models)

👋 Introduction

Target Audience:

Jeep owners, mechanics, restoration specialists, parts suppliers, and enthusiasts.

Value Proposition:

Provides essential part identification and ordering information, crucial for maintaining and restoring vintage Jeep vehicles, offering a cost-effective alternative to physical manuals or dealership inquiries.

Instant Access:

Instant download provides immediate access to critical parts information without shipping delays.

Ease Of Use:

Designed for ease of use with clear diagrams and manufacturer part numbers.

📋 Manual Details

Geographical Coverage:

Primarily North American market, with parts applicable globally due to Jeep's international presence.

Estimated Page Count:

Extensive (exact number not specified, but implied to be comprehensive for multiple models).

Type:

Parts Catalog / Parts List Manual

Language:

English

Digital Format:

PDF

📖 Manual Coverage

Powertrain:

Engine assembly, fuel system, cooling system, exhaust system, transmission, transfer case, drivetrain components (axles, driveshafts).

Chassis And Suspension:

Frame, front and rear suspension components (springs, shocks, control arms), steering system, brakes (front and rear drums/discs), wheels and tires.

Electrical System:

Wiring harnesses, lighting, ignition system, starting and charging system, gauges, switches, fuse box.

Body And Interior:

Body panels (fenders, doors, hood, tailgate), bumpers, glass, convertible tops, interior trim, seats, dashboard components, hardware.

Assembly Disassembly:

Exploded diagrams facilitate identification and understanding of assembly/disassembly sequences for all listed parts.

Part Identification:

Includes manufacturer part numbers, descriptions, and detailed diagrams for every part.

Diagram Utility:

High-resolution, enlargeable exploded views for precise identification of even small components.

📊 Manual Specifications

File Type:

PDF

Printability:

Printable on demand, allowing users to print specific pages as needed.

Binding:

N/A (Digital Download)

Paper Quality:

N/A (Digital Download - user's discretion for printing)

⚙️ Engine Specifications

Engine Options Cj:

AMC 151 I4 (2.5L), AMC 258 I6 (4.2L), AMC 304 V8 (5.0L)

Engine Options Sj J10 J20:

AMC 258 I6 (4.2L), AMC 360 V8 (5.9L), AMC 401 V8 (6.6L)

Engine Options Xj:

AMC 151 I4 (2.5L), AMC 258 I6 (4.2L)

Horsepower Torque Notes:

Specific horsepower and torque figures vary by engine and tuning; manual provides part numbers for all components affecting performance.

Carburetor Injection Notes:

Components for both carbureted (e.g., Carter, Motorcraft) and early electronic fuel injection (EFI) systems are likely covered, depending on specific model and year variants within the range.

🔧 Transmission

Manual Transmission Options:

T150, T176, T4/T5 (for lighter models)

Automatic Transmission Options:

TH400, TH350, TF999, TF727

Transfer Case Options:

Dana 20, Dana 300 (for CJ), Selec-Trac (for XJ/MJ), Quadra-Trac (for SJ).

📐 Dimensions

Wheelbase Variations:

CJ-5 (approx. 84-93 in), CJ-7 (approx. 103.5 in), SJ Wagoneer/Cherokee (approx. 108.7 in), J-Series Trucks (approx. 129-131 in for J10, 131.5 in for J20), MJ Comanche (approx. 119.4 in).

Gross Vehicle Weight Rating Notes:

GVWR varies significantly by model, from approx. 3,400 lbs (CJ) to over 6,000 lbs (J20), with detailed part sourcing for all weight-bearing components.

🛡️ Safety Features

Safety Features Notes:

Manual covers all original safety equipment including seat belts, roll bars (for CJ), brake components, and lighting systems.

Braking System Types:

Front disc, rear drum brakes standard on most models; some heavier duty trucks may have four-wheel disc options or more robust drum systems. Manual provides part numbers for all braking hardware.

💡 Technology Features

Audio System Options:

Covers original radio components, speakers, and wiring. Aftermarket upgrades would utilize similar mounting points and electrical connectors identifiable via the manual.

ABS Availability:

ABS was not standard or widely available on these models in 1981. Manual covers standard braking systems.

Wiring Harness Details:

Detailed diagrams of wiring harnesses are crucial for diagnosing electrical issues and planning any aftermarket integrations.

🔧 Maintenance

Maintenance Schedule Notes:

While the manual is a parts catalog, the detailed breakdown of components implies the parts needed for scheduled maintenance (e.g., filters, spark plugs, belts).

Engine Oil Type Notes:

Typically 10W-30 or 10W-40 for gasoline engines, with specific capacities and filter part numbers available for each engine variant.

Coolant Type Notes:

Conventional green ethylene glycol coolant. Manual provides part numbers for radiators, hoses, and caps.

Transmission Fluid Type Notes:

ATF+3/+4 for automatics, gear oil (e.g., 80W-90) for manual transmissions and transfer cases. Manual includes part numbers for seals, gaskets, and filters.

Common Wear Items:

Components commonly replaced include universal joints, brake pads/shoes, clutch components, exhaust systems, and ignition parts. Manual provides OE part numbers for all.

Body Rust Prone Areas:

Floor pans, rocker panels, and lower body sections are susceptible to rust; manual provides part numbers for body panels and hardware for replacement.

📚 Vehicle History

Jeep Legacy:

The manual covers models from a pivotal era for Jeep, bridging the gap between classic off-road utility and the emerging SUV segment.

Cj Series Evolution:

CJ-5 (continued evolution), CJ-7 (introduced 1976, more refined).

Sj Series Evolution:

Wagoneer and Cherokee (SJ) represent the luxury and upscale off-road vehicles of the era, while J-series trucks are robust utility vehicles.

Xj Mj Introduction:

The 1981 model year marks one of the earliest appearances of the XJ Cherokee (unibody construction introduced later for XJ) and MJ Comanche pickup truck, representing a significant shift for Jeep's product line.

Manufacturing Locations:

Primarily Toledo, Ohio, USA, under AMC ownership during this period.

🏆 Awards & Recognition

Model Recognition Notes:

While specific awards for the 1981 model year are not detailed in the product description, Jeep vehicles of this era are widely recognized for their off-road capability and durability, contributing to their enduring legacy and collectibility.