Original Market:
World War II Allied Military Vehicle
Current Market:
Collector Vehicle, Off-Road Enthusiast Vehicle, Military Vehicle Restoration
Competitor Models:
Willys MB, Bantam GP
Design Philosophy:
Robust, simple, reliable, highly mobile 4x4 utility vehicle
Durability:
Built for extreme conditions and extensive use
Iconic Status:
Recognized globally as a symbol of American wartime ingenuity and capability
Primary Coverage:
Mechanical, Electrical, Bodywork, and Maintenance
Secondary Coverage:
Troubleshooting, Specifications, Unit Repair
Estimated Page Count:
200+
Type:
Service Manual / Repair Manual
Engine:
Willys-Overland Go Devil (L-134) Engine
Transmission:
Warner T-90 3-speed manual transmission
Drivetrain:
Dana 25 front axle, Dana 44-7 (or similar) rear axle, Spicer 1350/1355 series driveshafts
Suspension:
Front and Rear Leaf Spring Suspension
Braking System:
Hydraulic Drum Brakes (Front and Rear)
Electrical System:
12-volt system, Lucas/Bosch electrical components, wiring diagrams
Fuel System:
Carburetor (likely Carter WDB-726), fuel pump, tank
Cooling System:
Radiator, fan, water pump, hoses
Bodywork:
Chassis, body panels, tub construction, fenders
Maintenance:
Lubrication, fluid changes, filter replacement, tune-up procedures
Repair:
Engine overhaul, transmission rebuild, brake system repair, electrical component replacement
Troubleshooting:
Diagnostic procedures for common and uncommon issues
Specifications:
Torque values, clearances, dimensions, fluid capacities
Assembly Disassembly:
Detailed steps for component removal and installation
Depth:
Comprehensive, covering basic maintenance to complete engine and transmission rebuilds
Detail Level:
Detailed exploded views and step-by-step instructions
Engine Type:
Inline-4 Cylinder, Overhead Valve (OHV)
Engine Code:
L-134 (Go Devil)
Displacement:
134.2 cubic inches (2.2 Liters)
Bore X Stroke:
3-1/8" x 4-3/8" (79.4mm x 111.1mm)
Compression Ratio:
6.5:1 (approx.)
Horsepower:
60 HP @ 4000 RPM (approx.)
Torque:
105 lb-ft @ 2000 RPM (approx.)
Carburetor Model:
Carter WDB-726 (or equivalent)
Fuel Type:
Gasoline (Octane rating to be specified by manual)
Fuel Pump Type:
Mechanical
Type:
Warner T-90 3-speed manual
Transfer Case:
2-speed, 4x4 engagement (e.g., Spicer 18)
Gear Ratios:
1st: 2.59:1, 2nd: 1.55:1, 3rd: 1.00:1, Reverse: 3.32:1 (approx.)
Clutch Type:
Single plate, dry friction disc
Wheelbase:
80 inches (2032 mm)
Length:
132.75 inches (3372 mm)
Width:
62.25 inches (1581 mm)
Height:
53.5 inches (1359 mm) (to top of windshield frame, without canvas)
Curb Weight:
2,350 lbs (1066 kg) (approx.)
Payload Capacity:
800 lbs (363 kg) (approx.)
Gross Vehicle Weight:
3,325 lbs (1508 kg) (approx.)
Ground Clearance:
8.7 inches (221 mm) (approx.)
Tire Size:
6.00 x 16 (standard)
Wheelbase Track Front:
56.5 inches (1435 mm)
Wheelbase Track Rear:
56.5 inches (1435 mm)
Crash Test Ratings:
Not applicable (military vehicle, pre-dates modern safety standards)
Active Safety:
None (basic utility vehicle)
Passive Safety:
Robust chassis, limited driver protection due to open-top design
Braking System Type:
Hydraulic drum, internal expanding
Oil Change Interval:
As specified in the manual, likely every 1,000-2,000 miles or 3-6 months
Grease Points:
Regular lubrication of chassis and suspension components (daily/weekly as per military doctrine)
Tune Up Interval:
As needed, typically based on ignition system condition
Engine Oil Grade:
SAE 10W or SAE 10W-30 (specific grade to be confirmed by manual)
Engine Oil Capacity:
5 Quarts (4.7 Liters) with filter
Transmission Fluid Type:
GL-1 gear lubricant (or equivalent)
Transmission Fluid Capacity:
Approximately 2.5 Pints (1.2 Liters)
Transfer Case Fluid Type:
GL-1 gear lubricant (or equivalent)
Transfer Case Fluid Capacity:
Approximately 2.5 Pints (1.2 Liters)
Axle Fluid Type:
GL-1 or GL-5 gear lubricant (differential specific, check manual)
Brake Fluid Type:
DOT 3 Hydraulic Brake Fluid (or original specification)
Coolant Type:
Water (during wartime) or water with rust inhibitor (modern use)
Common Wear Items:
Brake systems, clutch components, kingpins, universal joints, ignition points
Engine Reliability:
Generally reliable but requires regular maintenance; potential for carbon buildup and valve guide wear
Transmission Wear:
Synchros can wear, requiring careful shifting; input shaft seals are prone to leaks
Philosophy:
Preventative maintenance and field repairability are paramount
Parent Company:
Ford Motor Company
Ford Contribution:
Mass production of the standardized 4x4 utility vehicle design during WWII
Predecessors:
Bantam GP, Willys MB
Standardization:
Developed to meet US Army specifications for a standardized light reconnaissance vehicle
Production Period:
1941-1945
Ford Production Volume:
Over 270,000 units (shared with Willys MB production)
Manufacturing Locations:
Various Ford plants in the USA
