Willys M38

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Willys M38
File:Flickr - DVS1mn - 53 Willys Jeep (1).jpg
A restored Willys M38
Type Lua error in Module:Convert at line 452: attempt to index field 'titles' (a nil value).[lower-alpha 1] 4x4 Utility truck
Place of origin United States
Production history
Manufacturer Willys-Overland
Produced 1949–1952[1]
Number built more than 60,000 produced[1]
Specifications
Weight 2,625 lb (1,191 kg) Empty
Length 133 in (3.38 m)
Width 62 in (1.57 m)
Height 62 in (1.57 m)
Engine Willys MC[2]
51 hp (38 kW)
Transmission 3 spd. x 2 range trf. case
Suspension Beam axles on leaf springs
Fuel capacity 11 US gal (42 L)
Operational
range
 220 mi (354.1 km)
Speed 60 mph (97 km/h)

The Willys M38 United States Army Jeep, also known as the Willys MC,[1] replaced the World War II Willys MB and Ford GPW models. It was a 1/4 ton 4 × 4 utility truck manufactured between 1949 and 1952 with a total production of more than 60,000 units.[1] The M38 was military version of the then-current civilian Jeep CJ-3A.[1] The M38 differed from the CJ-3A in numerous ways, including a reinforced frame and suspension,[citation needed] waterproof 24-volt electrical system,[1] sealed vent system for the engine, transmission, transfer case, fuel system[1] and brake system.[citation needed] Some M38 jeeps were assigned to the Korean theater of operations, but the majority of vehicles used in that conflict were rebuilt WWII vintage. Approximately 2,300 M38 Jeeps were manufactured by Ford of Canada for Canadian Armed Forces in 1952, designated as the M38-CDN jeep.

The M38 windshield could be folded flat for firing and the body was equipped with a pintle hook for towing and lifting shackles front and rear. The headlights were no longer recessed as on previous models, but protruded with a guard wire in front. The "pioneer" tools (axe and shovel) which were carried on the MB's driver side were transferred to the passenger side of this vehicle.[3]

Dimensions

The M38 had an empty weight of 2,615 pounds (1,186 kg) and a gross vehicle weight of 3,825 pounds (1,735 kg) on road.[4] The wheelbase was 80 in (2,032 mm), ground clearance was Lua error in Module:Convert at line 452: attempt to index field 'titles' (a nil value). at the rear axle, maximum overall height was Lua error in Module:Convert at line 452: attempt to index field 'titles' (a nil value)., minimum width was 62 in (1,575 mm) and overall length was Lua error in Module:Convert at line 452: attempt to index field 'titles' (a nil value)..[5]

Engine

  • Bore/Stroke: Lua error in Module:Convert at line 452: attempt to index field 'titles' (a nil value).[2]
  • Compression Ratio: 6.48:1
  • Displacement: 134.2 cubic inches (2,199 cc)[2]
  • Power: 60 hp (45 kW) at 4000 rpm[2]
  • Torque: 105 lb⋅ft (142 N⋅m) at 2000 rpm[2]
  • Main Bearings: 3[citation needed]
  • Carburetor: Carter YS 637S, Lua error in Module:Convert at line 452: attempt to index field 'titles' (a nil value). downdraft[6]

Powertrain

The entire engine air intake and the axle system was fully vented to allow for operation while submerged under water. Its full-floating front axle (Dana 25) was supported by the wheel hub, rather than the axle itself, and provided greater load capacity. The rear axle (Dana 44) was semi-floating. Its drivetrain was the L-head 134.2 cu in (2.2 L) with a T-90 transmission and the Dana 18 transfer case.

A few M38 Jeeps were fitted with a transmission power take-off (PTO) driven winch. This feature was not used in regular production models due to increased weight on the front of the vehicle, as well as additional maintenance requirements.

Electrical system

The electrical system was upgraded to a 24 volt system which required dual 12 volt batteries connected in series. Its ignition and electrical systems were waterproof; a handy feature in rainy environments and where deep river fording was necessary.

See also

Notes

Footnotes

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Citations

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References

General

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Technical manuals

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External links


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  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Brown 1994, p. 64.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 TM-9-804–​1⁄4 4x4 Utility truck M38, p.89
  3. ↑ M38 Jeep Reference Guide, Miller 2009
  4. ↑ TM-9-804–​1⁄4 4x4 Utility truck M38, p.6
  5. ↑ TM-9-804–​1⁄4 4x4 Utility truck M38, p.3
  6. ↑ TM-9-804–​1⁄4 4x4 Utility truck M38, p.109
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