Mercedes-Benz LP 333

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Mercedes Benz
LP 333
LP 333
LP 333
Manufacturer: Daimler Benz
Sales designation: LP 333
Production period: 1958-1961
Previous model: LP 326
L 315
Successor: LP 334
LPS 2020
Technical specifications
Designs: Forward control truck with flatbed,
tractor
Engines: Mercedes-Benz OM 326
Diesel, 10,809 cm³
Power: 147 kW
Length: 5925-8200 mm
Width: 2400-2500 mm
Height: 2750-2780 mm
Wheelbase: 1365 + 3835 mm
1400 + 2100 mm
Turning circle: ø 15.3–20.5 m
Payload: 8.9-10 t
Perm. Total weight: 16 t

The Mercedes-Benz LP 333 is a three-axle 16-ton truck from Daimler-Benz AG. The also called "centipede" forward control with double front came as a last resort due to the Seebohm'schen laws : For three-axle truck a total weight of 16 tonnes was allowed. In 1960 the permissible total weight for two-axle trucks was increased again from 12 to 16 t. Therefore, the LP 333 was only built from 1958 to 1961. The truck is called the LPS 333 . A total of 1833 vehicles were built, 354 of them in the last year of production.

Model variants

  • LP 333: basic model, with short or long cab
  • LPS 333: tractor, with short or long cab

technology

Chassis and power transmission

The LP 333 is a front-link truck with a ladder frame , two front axles and one rear axle. All axles are rigid axles and are sprung with two longitudinal leaf springs each; the rear axle also has progressive auxiliary springs, the first front axle hydraulic telescopic shock absorbers . The wheels are sheet steel disc wheels with tapered shoulder rims of size 7.5-20. Both front axles have single tires, the rear axle has twin tires . All tires are 10-20 eHD size. The Westinghouse brake system from Mercedes-Benz works with compressed air and acts on brake drums with a diameter of 440 mm on all wheels. Both front axles are steered with a Gemmer steering . The tie rods are not split; the LP 333 is only available as a left-hand drive.

The power is transmitted from the diesel engine via a single- disk dry clutch of the type Fichtel & Sachs G 70 KR to a horizontally installed, synchronized six-speed manual transmission of the type ZF S 6-70 . The transmission has a pneumatic shifting aid. The sixth gear is designed as an overdrive. The power is transmitted from the gearbox via a cardan shaft to a spiral bevel gearbox on the rear axle. The LP 333 was not available with all-wheel drive.

engine

The engine of the type Mercedes-Benz OM 326 .I is a six-cylinder - Series - antechamber - diesel engine with water cooling and four overhead valves . It is suspended on the frame in four rubber bearings. The split crankcase made of gray cast iron is cast together with the cylinder block. With a cylinder bore of 128 mm and a piston stroke of 140 mm, the engine has a total displacement of 10,809 cm³. The pistons are forged light alloy pistons from Mahle with four compression rings and two oil control rings ; a compression ring is chrome-plated . The force is transmitted to the forged crankshaft via connecting rods with a double-T cross-section , which is supported and hardened seven times in plain bearings. It has counterweights and vibration dampers.

The crankshaft drives the camshaft located in the crankcase via helical spur gears . It operates two inlet and two outlet valves per cylinder via tappets , push rods and rocker arms , which are suspended vertically in the cylinder head. The engine has six individual cylinder heads, which are sealed to the engine block with an asbestos-containing cylinder head gasket.

The fuel is cleaned by a two-stage fuel filter, the first stage of which is a felt tube filter and the second a micronic filter. It is then injected into the prechambers by a Bosch PES 6 A 90 B 410 RS 283/7 injection pump through a Bosch DNO SD 211 injection nozzle . The injection pump is controlled by a centrifugal governor. The sucked in air is cleaned by two paper filters and fed to the combustion chambers for all six cylinder heads via a common suction pipe made of light metal. The motor has pressure circulation lubrication with a temperature controller; a filter in the main flow and a fine filter clean the oil. A water cooling system with a finned tube cooler, which is regulated by a control thermostat, is used for cooling . A fan blows the waste heat away.

Technical data (1960)

LP 333 (platform) LPS 333 (tractor)
Execution of driver's cab short long short long
Dimensions, weights
Length (mm) 8200 7900 5925
width (mm) 2500 2400
Height (mm) 2750 2760 2760 2780
Wheelbase (mm) 1365 + 3835 1400 + 2100
Empty weight kg) 7,000 7,100 6,000 * 6,150 *
Maximum load (kg) 9,000 8,900 10,000 9,850
Maximum permissible total weight (kg) 16,000
Powertrain
coupling Fichtel & Sachs G70 KR
transmission ZF S 6-70, 2nd - 6th Quiet gear, synchronized
Gear ratios 1st gear: 7.35
2nd gear: 4.3
3rd gear: 2.69
4th gear: 1.65
5th gear: 1.0
6th gear: 0.678
R. gear: 6.27
Translation from the gearbox to the rear axle 7.35 or 8.38 or 6.50
Top speed 84 km / h with a ratio of 7.35
engine
Type In-line six-cylinder, four-stroke, four-valve pre-chamber diesel engine with OHV valve control
Engine designation Mercedes-Benz OM 326.I
Bore × stroke 128 × 140 mm
Displacement 10,809 cc
rated capacity 147 kW (200 hp) at 2200 min -1
maximum torque 686 Nm (70 kpm) at 1300 min -1
Compression ratio 20.5: 1
Firing order 1-5-3-6-2-4
Engine ground 805 kg
Glow plug Bosch KE / GA 1/20 or Beru 340 G (26 W)
Fuel consumption according to DIN 70030 23.2 l / 100 km at 63 km / h and a ratio of 7.35 depending on the trailer

* Without spare wheel and saddle

Individual evidence

  1. Daimler-Media: They called it the millipede: the LP 333 . April 8, 2008.

literature

Web links

Commons : Mercedes-Benz LP 333  - Collection of pictures, videos and audio files