Mercedes-Benz L 321
Mercedes Benz | |
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Mercedes-Benz LA 321
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L 321 | |
Manufacturer: | Daimler Benz |
Sales designation: | L 321 |
Production period: | 06.1957-1959 |
Previous model: | none |
Successor: | none |
Technical specifications | |
Designs: | Tractor, flatbed, tipper |
Engines: | Mercedes-Benz OM 321 (diesel, 5103 cm³) |
Power: | 81 kW |
Length: | 5375-8360 mm |
Width: | 2280-2500 mm |
Height: | 2325-2520 mm |
Wheelbase: | 3200-4830 mm |
Turning circle: | 12.6-19.7 m |
Payload: | 4.95-6.55 t |
Perm. Total weight: | 9.45-10 t |
The Mercedes-Benz L 321 is a Mercedes-Benz truck that was built at the Mercedes-Benz plant in Mannheim from June 1957 , where the L 311 and L 312 trucks were also built. Compared to both, the L 321 is designed for a higher payload of initially 5.5 t. The L 321 was built as a flatbed truck, tipper truck and semitrailer tractor, both with a front-link cab and a hood -link design . The all-wheel drive models were only built as hood handlebars. Production ended in Mannheim in 1959.
Models
- L 321: basic model, hood handlebars, flatbed, rear-wheel drive
- LK 321: hood link, tipper, rear-wheel drive
- LP 321: front handlebar, flatbed or chassis
- LA 321: hood link, flatbed, all-wheel drive
- LAK 321: hood link, tipper all-wheel drive
- LS 321: hood link tractor, rear-wheel drive
- LAS 321: Canopy link tractor, all-wheel drive
- LP 321: front-link tractor, rear-wheel drive
technology
Chassis and power transmission
The L 321 is a truck with two axles and a modular ladder frame that was offered with wheelbases of 3200 mm, 3600 mm, 4200 mm and 4830 mm. Both the front and rear axles are rigid axles . They are suspended from semi-elliptical springs. The rear axle is also equipped with two progressive auxiliary springs, the front axle has telescopic shock absorbers as standard . The reinforced tires of size 8.25-20 eHD are mounted on split tapered shoulder rims of size 6.5-20. All-wheel drive vehicles have off-road tires the same size. The front axle has single tires, the rear axle has twin tires . All wheels have inner-shoe drum brakes that are hydraulically actuated with compressed air support (brake servo) . The vehicles, which were available in both right-hand and left-hand drive versions, have recirculating ball steering with an undivided tie rod from Mercedes-Benz.
The force is transferred from the engine, a single dry type Fichtel & Sachs H32 transmitted to the transmission. The gearbox, an in-house development by Mercedes-Benz , is interlocked with the engine and is a fully synchronized five-speed gearbox with ball shift. The drive power is transmitted from the gearbox to the bevel gear differential on the rear axle via a two-part cardan shaft; All-wheel drive vehicles also have a reduction gear. There was no differential lock for either the rear axle or the front axle.
engine
The engine is fitted to all vehicles of the Mercedes-Benz OM 321 , a standing series - six-cylinder - four stroke - diesel engine with two valves , indirect injection and water cooling . The cylinder block made of nickel-alloyed cast iron and the split crankcase are made from a single cast. With a cylinder bore of 95 mm and a piston stroke of 120 mm, the engine has a total displacement of 5103 cm³. The pistons are forged pistons made of light metal from Mahle , each with four compression rings and two oil control rings . The force is transmitted via diagonally split connecting rods with a double-T cross section to a forged crankshaft with seven bearings, hardened at the bearings. The connecting rod and crankshaft have lead bronze plain bearings with steel support shells. The crankshaft is equipped with counterweights and vibration dampers.
A camshaft with four bearings in plain bearings runs in the crankcase and is driven by the crankshaft via helical spur gears. It operates the vertically suspended valves via tappets , push rods and rocker arms . Each cylinder has an inlet and an outlet valve. The cast iron cylinder head, which covers all cylinders, is removable and has an asbestos-containing seal.
The pressure circulation lubrication works with a gear oil pump and an oil filter in the main flow. The oil is cooled by an oil cooler with a temperature controller. The fuel is cleaned through a felt tube filter and injected into the prechambers with a Bosch PES 6 A70 B 410 RS 64/7 injection pump through Bosch DNO SD 211 injection nozzles . The injection pump has a variable speed controller. The air is cleaned with a paper air filter. The engine is cooled with a tube cooler, the warm exhaust air of which is blown away by a fan.
Technical data 1958
L 321/36 | L 321/42 | L 321/48 | LK 321/32 | LK 321/36 | LP 321/32 | LP 321/36 | LP 321/42 | LP 321/48 | LA 321/36 | LA 321/42 | LAK 321/32 | LAK 321/36 | LAS 321/32 | LAS 321/36 | LS 321/32 | LS 321/36 | LPS 321/32 | LPS 321/36 | |
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Dimensions and weights | |||||||||||||||||||
Wheelbase (mm) | 3600 | 4200 | 4830 | 3200 | 3600 | 3200 | 3600 | 4200 | 4830 | 3600 | 4200 | 3200 | 3600 | 3200 | 3600 | 3200 | 3600 | 3200 | 3600 |
Front track (mm) | 1705 | 1940 | 1820 | 1705 | 1940 | ||||||||||||||
Rear track (mm) | 1725 | ||||||||||||||||||
Ground clearance (mm) | 225 | 235 | 255 | ||||||||||||||||
Length (mm) | 6660 | 7360 | 8360 | 5875 | 6315 | 6425 | 7425 | Depending on the structure | 6360 | 7360 | 5875 | 6315 | 5375 | 5775 | 5375 | 5775 | 5520 | 5920 | |
width (mm) | 2280 | 2310 | 2280 | 2500 | 2300 | 2310 | 2300 | 2230 | 2500 | ||||||||||
Height (mm) | 2325 | 2440 | 2520 | 2325 | 2440 | ||||||||||||||
Turning circle diameter (m) | 15.7 | 17.7 | 19.7 | 15.8 | 17.3 | 12.6 | 13.6 | 15.2 | 16.9 | 16.5 | 18.5 | 15.2 | 16.5 | 15.2 | 16.5 | 12.6 | 13.6 | ||
Empty weight kg) | 3475 | 3560 | 3755 | 3820 | 3900 | 3665 | 3830 | Depending on the structure | 3740 | 3850 | 4150 | 4200 | 3275 | 3295 | 2950 | 3005 | 3135 | 3190 | |
Payload (kg) | 5450 | 5740 | 5650 | 5045 | 5290 | 6335 | 5855 | 5710 | 5600 | 4950 | 5220 | 6175 | 6155 | 6300 | 6220 | 6550 | 6360 | ||
Permissible total weight (kg) | 9450 | 10,000 | 9450 | 10,000 | |||||||||||||||
engine | |||||||||||||||||||
Engine designation | Mercedes-Benz OM 321 | ||||||||||||||||||
Engine type | Series - six-cylinder - four stroke - Two valve - OHV - antechamber - diesel engine | ||||||||||||||||||
cooling | Water cooling | ||||||||||||||||||
Inlet valve opens | 22 ° before top dead center | ||||||||||||||||||
Inlet valve closes | 58 ° after bottom dead center | ||||||||||||||||||
Outlet valve opens | 56 ° before bottom dead center | ||||||||||||||||||
Outlet valve closes | 26 ° after top dead center | ||||||||||||||||||
Firing order | 1-5-3-6-2-4 | ||||||||||||||||||
Engine ground | 385 kg | ||||||||||||||||||
Injection pressure | 132.4 bar | ||||||||||||||||||
Starter | Thrust armature starter Bosch BNG 4/12 CR 201 | ||||||||||||||||||
Glow plug | Bosch KE / GA 1/8 Beru 214 Ge | ||||||||||||||||||
Bore × stroke | 95 × 120 mm | ||||||||||||||||||
Displacement | 5103 cc | ||||||||||||||||||
Nominal power at 3000 min −1 | 81 kW (110 DIN PS according to DIN 70020) | ||||||||||||||||||
Maximum torque at 1600 min -1 | 299 Nm (30.5 kpm according to DIN 70020) | ||||||||||||||||||
Power transmission | |||||||||||||||||||
Power transmission on | Rear wheels | All wheels | Rear wheels | ||||||||||||||||
coupling | Single-disc dry clutch Fichtel & Sachs H 32 | ||||||||||||||||||
transmission | Daimler-Benz five-speed gearbox, manual, mechanical, synchronized | ||||||||||||||||||
Gear ratios | 1st gear: 8.980 2nd gear: 4.785 3rd gear: 2.736 4th gear: 1.663 5th gear: 1,000 R. gear: 8.290 |
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Translation from gearbox to wheels | 6.857 | 6.83 | 6.857 | 6.83 | |||||||||||||||
Gear ratio additional gear | Not installed | 1.05 (road) 1.6 (terrain) |
Not installed | ||||||||||||||||
Transmission case oil capacity | 3.7 l | ||||||||||||||||||
Top speed | 77 km / h | 72 km / h | 77 km / h | ||||||||||||||||
Brake drum diameter | front: 400 mm rear: 408 mm |
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other data | |||||||||||||||||||
Fuel consumption according to DIN 70030 | 14.9 l / 100 km | 16.4 l / 100 km | depending on the trailer | ||||||||||||||||
Oil consumption | 250 ml / 100 km | ||||||||||||||||||
Capacity of the fuel tank | 100 l | ||||||||||||||||||
Capacity of the cooling system | 21 l | ||||||||||||||||||
Oil sump capacity | 7-9 l |
Individual evidence
- ↑ a b Daimler-Benz Media: Mercedes-Benz L 4500: Mid-range car with high payload capacity . February 25, 2008
- ↑ a b Mercedes-Benz: L 321 truck goes into production
literature
- Association of the Automotive Industry : Daimler-Benz AG. Mannheim plant: Type L 321 and LK 321 . Number 945. Group 14. Frankfurt am Main. October 1958.
- Association of the Automotive Industry : Daimler-Benz AG. Mannheim plant: Type LP 321 . Number 925b. Group 14. Frankfurt am Main. May 1958.
- Association of the Automotive Industry : Daimler-Benz AG. Mannheim plant: Type LA 321 and LAK 321 . Number 945a. Group 14. Frankfurt am Main. October 1958.
- Association of the Automotive Industry : Daimler-Benz AG. Mannheim plant: Type LAS 321 . Number 925a. Group 15. Frankfurt am Main. May 1958.
- Association of the Automotive Industry : Daimler-Benz AG. Mannheim plant: Type LS 321 . Number 925. Group 15. Frankfurt am Main. May 1958.
- Association of the Automotive Industry : Daimler-Benz AG. Mannheim plant: Type LPS 321 . Number 925b. Group 15. Frankfurt am Main. May 1958.
Web links
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