Unimog 425
Mercedes Benz | |
---|---|
Model 425.121
|
|
Unimog 425 | |
Manufacturer: | Daimler Benz |
Sales designation: |
U 1300 U 1500 |
Production period: | 1975-1988 |
Previous model: | none |
Successor: | Unimog 427 |
Technical specifications | |
Engines: | OM 352 |
Power: | 88-110 kW |
Wheelbase: | 2810 mm |
The Unimog 425 is the first series of heavy Unimogs from Mercedes-Benz . It was presented at the DLG exhibition in September 1974 in Frankfurt as the Unimog U 120 . It was manufactured by Daimler-Benz between 1975 and 1988 at the Mercedes-Benz plant in Gaggenau . There were 3135 vehicles in three types, which were marketed as Unimog U 1300 and U 1500 . The 435 series , which was introduced at the same time, was built in significantly larger numbers, but has the same angular cab type and can be distinguished from the 425 series at first glance by its longer wheelbase . The design of the vehicle has been retained in the Unimog to this day. The 425 was replaced by the Unimog 427.
Model overview
Model | Sales description | execution | Wheelbase (mm) | Motorization (kW) | Quantities |
---|---|---|---|---|---|
425.121 | U 1300 | closed cab | 2810 | 88/92 | 1063 |
425.131 | U 1500 T | closed driver's cab (power end) | 110 | 282 | |
425.141 | U 1500 | closed cab | 1790 |
technology
The Unimog 425 is a two-axle truck with a cranked ladder frame and rear-wheel drive with switchable front-wheel drive. Like all other Unimogs, it has four wheels of the same size and rigid portal axles with oil pressure shock absorbers and coil springs that are guided on push tubes and a Panhard rod . The brake system is a compressed air-operated hydraulic dual-circuit brake system that acts on disc brakes on all wheels; A trailer braking system was also available on request. For attachments , PTO shafts are available for front, rear and center output, which can be switched in two stages (540 min −1 and 1000 min −1 ). There is also power steering and control hydraulics. The vehicle is powered by the six-cylinder Mercedes-Benz OM 352 diesel engine with exhaust gas turbocharging and an output of 92 or 110 kW (125 or 150 hp).
Innovation as compared to the previous series is the pneumatic transmission of the type UG 3 / 40-8 . It has four gears that can be shifted into two groups with a flange-mounted planetary gear. There is only one shift lever that is used to shift according to the eight-speed H shift pattern. When shifting from 4th to 5th gear, the transmission is shifted back to 1st gear while at the same time shifting from the first to the second group. The transmission has no reverse gear, instead there is an intermediate gear between the drive shaft and the countershaft; the direction of travel is switched with a separate lever. In the reverse position, the planetary gear is only slightly geared down (1: 1.03), so that you can drive backwards almost as fast as forwards. The second group of the transmission can therefore be blocked.
An agricultural gearbox was also available for agricultural customers. This is an additional three-stage planetary gear which, in addition to the normal gear stage, also has the two stages of working gear and creeping gear . This results in 24 forward and just as many reverse gears instead of 8. In connection with the agricultural gearbox, a pneumatic double clutch is installed instead of the standard single- disk dry clutch .
Technical specifications
Parameters | U 1500 |
---|---|
Years of construction | 1975-1988 |
Dimensions | 5940 kg |
length | 4870 mm |
width | 2300 mm |
height | 2685 mm |
wheelbase | 2810 mm |
Gauge | 1840 mm |
Ground clearance | 500 mm |
Turning circle diameter | 13 m |
tires | 16–70 / 24 ″ |
Engine model | OM 352.xxx A |
Engine type | Water-cooled in-line six-cylinder diesel engine with turbocharger |
Mixture preparation | Direct injection |
Displacement | 5675 cc |
Bore × stroke | 97 mm × 128 mm |
Compression ratio | 16: 1 |
Nominal power (DIN 70020) | 110 kW (150 hp) at 2550 min -1 |
Max. Torque (DIN 70020) | 461 N · m at 1600 min -1 |
Top speed | 85 km / h |
Source: Oldtimer-Traktor , issue 11–12 / 2012
Web links
Remarks
- ↑ a b According to Daimler, series production began in 1975, but Lutz Nellinger writes in 1976, cf. Lutz Nellinger: The Unimog: workhorse and cult mobile. Komet, Cologne 2016, ISBN 978-3-86941-581-9 , p. 21 and Daimler AG (ed.): Mercedes-Benz Public Archive - Series 425
Individual evidence
- ^ Lutz Nellinger: The Unimog: workhorse and cult mobile. Komet, Cologne 2016, ISBN 978-3-86941-581-9 . P. 21
- ↑ Daimler AG (Ed.): Mercedes-Benz Public Archive - 425 series . Retrieved February 2, 2018
- ↑ Daimler AG (Ed.): Mercedes-Benz Public Archive - Model 425.121 . Retrieved February 2, 2018
- ↑ Daimler AG (Ed.): Mercedes-Benz Public Archive - Model 425.131 . Retrieved February 2, 2018
- ↑ Daimler AG (Ed.): Mercedes-Benz Public Archive - Model 425.141 . Retrieved February 2, 2018
- ↑ a b c Oldtimer Traktor issue 11-12 / 2012
Vehicle class | 1920s | 1930s | 1940s | ||||||||||||||||
6th | 7th | 8th | 9 | 0 | 1 | 2 | 3 | 4th | 5 | 6th | 7th | 8th | 9 | 0 | 1 | 2 | 3 | 4th | |
Compact class | W 15 (type 170) | ||||||||||||||||||
W 23 (type 130) | |||||||||||||||||||
W 30 (type 150) | |||||||||||||||||||
W 28 (type 170 H) | |||||||||||||||||||
Middle class | W 02 (type Stuttgart 200) | W 136 / W 149 (types 170 V / 200 V) | |||||||||||||||||
W 11 (type Stuttgart 260) | W 143 (type 230 n) | ||||||||||||||||||
W 21 (type 200/230) | W 153 (type 230) | ||||||||||||||||||
W 138 (type 260 D) | |||||||||||||||||||
upper middle class | W 03 / W 04 / W 05 (types 300/320/350) | W 18 (type 290) | |||||||||||||||||
W 10 / W 19 (types 350/370/380) | W 142 (type 320) | ||||||||||||||||||
W 22 | |||||||||||||||||||
Upper class | Type 400 & Type 630 | W 24 / W 29 / W 129 (types 500 K / 540 K / 580 K) | |||||||||||||||||
W 08 (type Nürburg 460/460 K / 500 / type 500 N) | |||||||||||||||||||
W 07 / W 150 (types 770/770 K) | |||||||||||||||||||
Sports car | Model K | ||||||||||||||||||
W 06 (type S / SS / SSK / SSKL) | W 24 / W 29 / W 129 | ||||||||||||||||||
Off-road vehicle | W 103 (type G1) | W 31 (type G4) | |||||||||||||||||
W 133 III (type 170 VG) / W 139 (type 170 VL) / W 152 (type G5) | |||||||||||||||||||
Vans | L 3/4 | L 1000 Express | L 301 | ||||||||||||||||
L 300 |