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United States' 1/4 Ton, 4x4, Truck, "Jeep"

Photos

Willy's Overland Quad GPW Prototype, 1940:
United States' Willy's Overland Quad GPW Prototype, 1940

1/4 Ton, 4x4, Truck, "Jeep":
United States' 1/4 Ton, 4x4, Truck, Jeep
Daimler Chrysler Historical Collection

1/4 ton, 4x4, Truck, "Jeep", 1941:
United States' 1/4 ton Truck, "Jeep", 1941

1/4 Ton, 4x4, Truck, "Jeep", going for a swim in Italy:
United States' 1/4 Ton, 4x4, Truck, Jeep, going for a swim in Italy

1/4 ton, 4x4, Truck, "Jeep", 1941:
United States' 1/4 ton Truck, "Jeep", 1941
US Army Signal Corps

1/4 ton, 4x4, Truck, "Jeep":
United States' 1/4 ton Truck, "Jeep"

1/4 ton, 4x4, Truck, "Jeep""
United States' 1/4 ton Truck, "Jeep"

1/4 ton, 4x4, Truck, "Jeep":
United States' 1/4 ton Truck, "Jeep"

1/4 ton, 4x4, Truck, "Jeep":
United States' 1/4 ton Truck, "Jeep"

1/4 ton, 4x4, Truck, "Jeep":
United States' 1/4 ton Truck, "Jeep"

1/4 ton, 4x4, Truck, "Jeep":
United States' 1/4 ton Truck, "Jeep"

1/4 Ton, 4x4, Truck, "Jeep", on D-day with a Horsa glider in the background:
United States' 1/4 Ton, 4x4, Truck, Jeep, on D-day with a Horsa glider in the background:
1/4 ton, 4x4, Truck, "Jeep":
United States' 1/4 ton Truck, "Jeep"

1/4 ton, 4x4, Truck, "Jeep", Ford version:
United States' 1/4 ton Truck, "Jeep", Ford version

Design

The Jeep was initially developed for the Quartermaster Corps as a vehicle that could "go anywhere."1,2 In August 1942 these were then turned over to the responsibility of the Ordnance Department.1

The windshield on the Jeep could be folded forward over the hood.1 There was a canvas top that was available.1

Towing

The Jeep could tow a 37 mm gun or a two wheeled cargo carrier.1

Production

  • 1/4 Ton, 4x4, Truck: ~650,0002
    • Manufacturer: Ford Motor Co.1, Willys-Overland Motors, Inc.1

Usage

The Jeeps were used for many roles, some of which being:

  • Ambulance2
  • Liaison2
  • Railroad, modified to travel on rails2
  • Reconnaissance2
  • Rocket Launcher2
  • Telephone line layer2

British SAS

The Jeep was modified to be used for long range desert patrols by the British SAS (Special Air Service).2

Specifications

  1/4 Ton, 4x4, Truck, "Jeep"
Crew 21,2
Radio  
Physical Characteristics  
Weight 2,743 lb2, 3,253 lb1
1,247 kg2
Payload 800 lb
Towing load 1,000 lb1
Length 11' 0.25"1,2
3.33 m2
Height 3' 9"2, 5' 9.75"1
1.14 m2
Width 5' 2"1,2
1.57 m2
Ground clearance 8.75"1
Ground pressure 20.8 psi1
Wheelbase 80"1
Armament  
Main 1: 0.30 cal machine gun1
OR 1: 0.50 cal machine gun1
Quantity  
Main  
Armor Thickness (mm)  
Engine (Make / Model) 1: Willys 4412
OR 1: Willy 442 "Go Devil"2
Bore / stroke 3 1/8" x 4 3/8"1
Cooling  
Cylinders 41,2
Capacity 134.2 cu. ins.1
Net HP 54@4,000 rpm1, 602
Power to weight ratio  
Compression ratio 6.48:11
Radiator (Type) Fin and tube1
Capacity 11 quarts1
Transmission (Type) Syncromesh1
6 forward, 2 reverse1
Steering  
Steering ratio 14, 12, 14:11
Starter  
Electrical system 6-12 volt1
Ignition Battery1
Gear ratios - 1st speed 2.67:11
- 2nd speed 1.56:11
- 3rd speed 1.00:11
- Reverse 3.55:11
Fuel (Type) Gasoline1,2
Octane 681
Quantity 15 gallons1
Road consumption  
Cross country consumption  
Performance  
Speed - Road 55 mph2, 65 mph1
88.5 kph2
Max speed towing 20 mph1
Speed - Cross Country  
Range - Road 225 miles2, 300 miles1
363 km2
Road radius towing 260 miles1
Range - Cross Country  
Turning radius 17' 6"1
Elevation limits  
Fording depth 1' 6"1, 1' 7"2
0.5 m2
Trench crossing  
Vertical obstacle  
Climbing ability 60%1
Climbing ability towing 45%1
Suspension (Type) Semi-elliptic1
Wheels each side  
Wheels (Type) 6.00x16, 6 ply mud and snow
Width  
Diameter  
Tire tread  
Track centers/tread  

Sources:

  1. The American Arsenal, 1996
  2. Armored Fighting Vehicles, 300 of the World's Greatest Military Vehicles, Philip Trewhitt, 1999
20th Century American Military History Crucial Site

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