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From Wikipedia, the free encyclopedia

Unimog 404
Unimog 404.1 based German fire engine TLF 8/8
Overview
TypeTruck
ManufacturerDaimler-Benz AG
Also called404.1: Unimog U82
404.0: Unimog U110
Production1955 – 1980
AssemblyMercedes-Benz-Werk Gaggenau
Powertrain
Engine
  • 2.2 L M180 I6 (petrol)
  • 2.8 L M130 I6 (petrol)
  • 2.2 L OM615 I4 (diesel)
Transmission6-speed manual with 2 additional reverse gears
Chronology
Predecessornone
SuccessorUnimog 435[1]

The Unimog 404, also called the Unimog S and Unimog 404 S, is a vehicle of the Unimog-series by Mercedes-Benz, produced in the Unimog plant in Gaggenau from 1955 to 1980. Marketed as Unimog U82, and later Unimog U110, 64,242 units of the two Unimog 404 types 404.0 and 404.1 were built, which makes the 404 the Unimog model with the highest production figure of all Unimogs.[2] Unlike the Unimog 401, the 404 is rather a small 1.5-tonne-offroad-truck than an agricultural vehicle. In Germany, it was a common[3] military vehicle and fire engine, 36,000[4] Unimog 404 were made for the Bundeswehr.[5]

The first Unimog 404 concept-vehicle was made in 1953 and was slightly smaller than the series production model, it had a track width of 1,600 mm (63 in) and a wheelbase of 2,670 mm (105 in). Two prototypes for the French army followed in 1954, the first 1,100 series production models were also purchased by the French army.[5] Since the French army did not want the spare wheel to occupy space for soldiers on the bed, the Daimler-Benz engineers decided to build the Unimog 404 with a downswept frame so the spare wheel could be mounted underneath the bed. This constructional feature also allowed more torsional flexing and, therefore, improved the offroad capabilities of the Unimog. Later, the downswept frame became a key constructional feature for the following Unimog types.[6]

At its introduction in 1955, the Unimog 404.1 was available as the 2,700 mm (106 in) wheelbase model with the Otto engine M 180 producing 60 kW (80 hp; 82 PS). In 1956, the 2,900 mm (114 in) wheelbase model of the 404.1 followed, available with the same engine. Both were sold as Unimog U82. The production of the U82 with the short wheelbase was stopped in 1971, while the long wheelbase model was built until 1980. Starting from 1971, the Unimog 404.0, sold as Unimog U110, was offered. It was fitted with the cab of the Unimog 406 and soon afterwards, with the model 404.012, it received the M 130 engine. However, only 1,791 404.0 were made. Also, 81 Unimog 404 were made with the diesel engine OM 615 (44 kW (59 hp; 60 PS)) for the Portuguese market.[2]

The Unimog 404.0 has the cab of the Unimog 406.

Technical description

Unimog 404 chassis.
Unimog 404.1 Cabrio. It lacks side windows.

The Unimog 404 is a small four-wheel offroad capable truck designed for a payload of 1,500 kg (3,307 lb). Like other Unimogs, it has a ladder frame, two portal axles with reduction gears and coil springs with hydraulic shock absorbers for the rear and front axle. All four wheels and tyres have the same size and are fitted with hydraulic ATE drum brakes. The 404 is a rear-wheel-drive vehicle with switchable all-wheel-drive and additional differential locks.[7]

A water-cooled straight-six Otto engine, type M 180 II-U, displacing 2,195 cc (134 cu in) powers the 404.1. It is fitted with a Zenith 32 NDIX offroad-carburettor and transmits the torque to a fully synchronised manual Daimler-Benz-six-speed-gearbox with two additional reverse gears. As clutch, the Fichtel & Sachs K 16 Z single-disc-dry-clutch is used.[7]

The 404 was available both with a standard closed two-door-cab and as a two-door-cabriolet with a convertible top. The 404.1 has a divided windscreen, while the 404.0 with the cab of the Unimog model 406 has a single windscreen. Only the standard cab models have side windows in the doors. Special purpose vehicles, such as fire engines, were also made with an extended four-door-cab.

Unimog 404.1 with an extended four-door-cab.

Overview of the 404-series

Types of the Unimog 404[8]
Type number 404-type Production period Cab Wheelbase (mm) Engine power (kW) Engine type Number manufactured Notes
404.010[9] 404.0 Cabrio 2900 81 M 130 113 Cab of the Unimog 416,[10] some units with M 180, 60 kW[11]
404.011[12] 404.0 Closed cab 2900 81 M 130 1151 Cab of the Unimog 406[10]
404.012[13] 404.0 Cabrio 2900 81 M 130 7 Cab of the 416[10]
404.013[14] 404.0 Closed cab 2900 81 M 130 520 Cab of the 406[10]
404.111[15] 404.1 1955–1956 Cabrio 2670 63 M 180 1210 Including 578 pre-series models,[16] some units with 59 or 60 kW.
404.112[17] 404.1 Cabrio and closed cab 2900 60 M 180 185
404.113[18] 404.1 Cabrio and closed cab 2900 60 M 180 8106 Some vehicles with 68 or 81 kW[19]
404.114[20] 404.1 1956–1980 Cabrio, chassis only and double cab 2900 60 M 180 50321 Some vehicles also with 68 kW
404.115[21] 404.1 Closed cab 2900 60 M 180 2548 Some vehicles also with 68 kW
404.117[22] 404.1 1969–1970[19] Cabrio 2900 44 OM 615 81 Model for the Protuguese market

Technical data

Type 404.1 404.0
Sold as U82 (short) U82 (long) U110
Years 1955–1971 1956–1980 1971–1980
Mass (approx.) 2900 kg 2970 kg 2970 kg
Length 4600 mm 4925 mm 5025 mm
Width 2130 mm 2140 mm 2130 mm
Height 2190 mm 2190 mm 2250 mm
Wheelbase 2700 mm 2900 mm
Track width 1630 mm
Ground clearance 400 mm[7]
Bed length 2700 mm 3000 mm
Bed width 2000 mm
Bed height 500 mm
Fuel tank capacity 2 × 60 l
Tyres 10–20 10.5–20
Engine model M 180/II U[7] M 130
Engine type Straight-six Otto, water-cooled
Fuel system Carburettor type Zenith 32 NDIX[7]
Displacement 2195 cc 2778 cc
Bore × stroke 80 mm × 72.8 mm 86.5 mm × 78.8 mm
Compression ratio 7:1[7]
Rated power (DIN 70020) 80–82 PS (59–60 kW)[7] at 4850 rpm 110 PS (81 kW) at 4800 rpm
Max. torque (DIN 70020) 16.1 kp⋅m (157.9 N⋅m) at 3200 rpm
Top speed 6th gear: 95 km/h 1st gear: 7 km/h
2nd gear: 13 km/h
3rd gear: 24 km/h
4th gear: 44 km/h
5th gear: 72 km/h
6th gear: 95 km/h
1st reverse gear: 6 km/h
2nd reverse gear: 10 km/h[7]
6th gear: 100 km/h
Climbing capability 1st gear: 70%
2nd gear: 45%
3rd gear: 23%
4th gear: 11.5%
5th gear: 6.5%
6th gear: 3.5%[7]
Source [4]

Bibliography

  • Carl-Heinz Vogler: Typenatlas Unimog. Alle Unimog-Klassiker seit 1946 bis 1993. GeraMond, München 2015, ISBN 978-3-86245-026-8, S. 41 ff.

References

  1. ^ Daimler: Unimog History 1974. Retrieved May 18, 2017
  2. ^ a b Unimog-Community: Unimog U 404 S [1955 bis 1980]. Retrieved May 17, 2017 (in German)
  3. ^ Colin Peck: Mercedes-Benz Trucks. Veloce. ISBN 978-1-845846-43-5. Page 52.
  4. ^ a b Peter Kautz: Mercedes-Benz Unimog S / 404 / 404S. Retrieved May 17, 2017 (in German)
  5. ^ a b Andreas F. Schulze: 55 Jahre Unimog 404 S. May 10th 2010, retrieved May 17th, 2017 (in German)
  6. ^ Carl-Heinz Vogler: ″UNIMOG 406 – Typengeschichte und Technik. Geramond. München. 2016. ISBN 978-3-86245-576-8. Page 45. (In German)
  7. ^ a b c d e f g h i Unimog 404 Gebruikershandleiding. P. 3–5. October 1966. Retrieved May 17, 2017 (in Dutch)
  8. ^ Vogler, S. 43
  9. ^ Daimler AG: Baumuster 404.010
  10. ^ a b c d Vogler, S. 46
  11. ^ Vogler, S. 54
  12. ^ Daimler AG: Baumuster 404.011
  13. ^ Daimler AG: Baumuster 404.012
  14. ^ Daimler AG: Baumuster 404.013
  15. ^ Daimler AG: Baumuster 404.111
  16. ^ Vogler, S. 42
  17. ^ Daimler AG: Baumuster 404.112
  18. ^ Daimler AG: Baumuster 404.113
  19. ^ a b Vogler, S. 48
  20. ^ Daimler AG: Baumuster 404.114
  21. ^ Daimler AG: Baumuster 404.115
  22. ^ Daimler AG: Baumuster 404.117
This page was last edited on 15 March 2024, at 22:11
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