Target Audience:
Restoration specialists, vintage Jeep owners, farm and utility users, military vehicle collectors
Use Case:
Maintenance, overhaul and repair of wartime and early civilian Willys Jeeps
Advantage:
Manufacturer-derived technical details, wiring diagrams and step-by-step procedures in one document, instantly downloadable
vs Printed Books:
Immediate access, printable sections, no shipping cost
Content:
Complete maintenance, diagnostics, disassembly and assembly procedures with pictures and diagrams
Scope:
Mechanical and technical specifications, equipment, body work and painting
Coverage Areas:
Engine, driveline, chassis, suspension, brakes, electrical, body and painting
Manual Type:
Maintenance, technical service and repair manual
Page Count:
N/A - varies by section, fully printable
Delivery Method:
Instant digital download
Engine:
Complete mechanical specifications, disassembly, cleaning and rebuild
Fuel System:
Carburetor service, fuel pump, lines and filters
Cooling System:
Radiator, water pump, thermostat and fan service
Ignition System:
Distributor, coil, spark plugs and timing procedures
Clutch:
Adjustment, inspection and replacement
Transmission:
Removal, disassembly, overhaul and reassembly
Transfer Case:
Four-wheel-drive unit service and repair
Axles and Differentials:
Front and rear axle service, gear setup and seals
Driveline:
Universal joints and driveshaft procedures
Suspension:
Leaf springs, shackles, shock absorbers and steering linkage
Brakes:
Hydraulic brake service, drums, shoes and adjustment
Wheels and Hubs:
Bearing service and hub removal
Electrical System:
Wiring diagrams, starting, charging and lighting circuits
Body:
Panels, fittings, seats, windshield and canvas top
Painting:
Surface preparation and refinishing procedures
Procedures Included:
Step-by-step maintenance, diagnostics, assembly and disassembly
Visual Aids:
Pictures, diagrams and exploded views
Equipment:
Equipment elevation (lifting and jacking) procedures
Collisions:
Collision damage repair information
Products and Supplies:
Recommended products, lubricants and supplies
Parts Data:
Description of various parts of the vehicle
Specifications Source:
Technical details taken directly from the manufacturer
Torque Data:
Fastener tightening specifications where applicable
File Format:
PDF (searchable, bookmarked, zoomable)
Compatibility:
Windows, macOS, Linux, iOS, and Android — any device with a PDF reader
Requirements:
A PDF reader application (e.g. Adobe Acrobat Reader, free)
Searchability:
Fully text searchable for fast lookup of any topic
Print Quality:
High-resolution digital pages, printable at full clarity
Binding Type:
N/A — digital download, no physical binding
Paper Type:
N/A — digital download, no physical paper
Primary Engine:
Willys 'Go Devil' 2.2 L (134 cu in) flathead inline 4-cylinder, side-valve
Engine Options:
Single engine family across MB and early CJ-2A; later L-head and F-head (Hurricane) variants covered
Bore and Stroke:
Approximately 3.125 in bore x 4.375 in stroke
Power Output:
Approximately 60 hp at 4,000 rpm
Torque:
Approximately 105 lb-ft
Compression Ratio:
Approximately 6.5:1 (low-octane era design)
Fuel System Type:
Carbureted, mechanical fuel pump
Carburetor:
Single downdraft carburetor (Carter type)
Standard Transmission:
3-speed manual column or floor shift (Borg-Warner T-84 type)
Optional Transmission:
N/A - single manual gearbox fitted to this era
Transfer Case:
2-speed 4-wheel-drive transfer case (Dana 18 type)
Drivetrain Layout:
Part-time 4WD, live solid axles front and rear
Features:
Low-range gearing for off-road and utility use; shift-on-the-fly front axle engagement at hubs
Crash Test Ratings:
N/A - no modern crash testing existed for this era vehicle
Brakes:
Hydraulic drum brakes on all four wheels (later versions; early MB used mechanical linkage brakes)
Lighting:
Sealed-beam headlamps with blackout driving features on military models
Seatbelts:
N/A - not fitted at the factory; retrofits common in restorations
Structure:
Rigid ladder frame with body-on-steel-tub construction
Audio System:
N/A - no factory radio fitted to military MB; early civilian radios were dealer accessories
Driver Assistance:
N/A - purely mechanical vehicle, no electronic systems
Instrumentation:
Speedometer, fuel gauge, oil pressure and ammeter gauges
Controls:
Manual choke, manual ignition advance, mechanical windshield wipers (vacuum on some models)
Engine Oil:
Change every 1,000-2,000 miles; check level at every fuel stop per era practice
Chassis Lubrication:
Grease fittings (springs, kingpins, U-joints) at regular intervals, roughly every 1,000 miles
Valve Clearance:
Check and adjust tappet clearance periodically
Ignition Service:
Point, plug and timing checks at routine intervals
Engine Oil:
SAE 30 (era-correct non-detergent specified; modern equivalents acceptable)
Gear Oil:
SAE 90 EP gear oil for transmission, transfer case and axles
Coolant:
Water with corrosion inhibitor or appropriate antifreeze mix
Grease:
Chassis grease for all Alemite fittings
Common Wear Items:
Leaf spring bushings, kingpins, wheel bearings and brake shoes
Oil Leaks:
Flathead rear main seal and valve cover gasket seepage
Electrical:
6-volt wiring and grounding connections require regular inspection
Corrosion:
Floor pan and body tub rust on high-mileage examples
Manufacturer:
Willys-Overland Motors, Toledo, Ohio
Origin:
Developed from the WWII 1/4-ton reconnaissance truck program
MA:
1941 pre-production military model
MB:
1941-1945 standard wartime military Jeep, approx. 360,000 built
CJ-2A:
1945-1949 first civilian Jeep, with tailgate and side-mounted spare
M38:
1950-1952 military evolution based on CJ-3A with 24-volt electrics
Production Location:
Toledo, Ohio, USA (some wartime units also built by Ford under license)