Mercedes-Benz L 325

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Mercedes Benz
L 325
L 325
L 325
Manufacturer: Daimler Benz
Sales designation: L 325
Production period: 06.1954-1957
Previous model: L 5500
Successor: L 329
Technical specifications
Designs: Hood handlebar truck with a flatbed or as a tractor
Engines: OM 325 (diesel, 7274 cm³)
Power: 92 kW
Length: 6070-8160 mm
Width: 2500 mm
Height: 2450 mm
Wheelbase: 3600-4600 mm
Turning circle: ø 13.5–17.4 m
Payload: 5.9-6.8 t
Perm. Total weight: 11.3-12 t

The Mercedes-Benz L 325 is a truck that Daimler-Benz produced at the Gaggenau plant from June 1954 to 1957 . It replaced the L 5500 type. The L 325 was only built as a long-nosed truck with a flatbed, as a tipper and as a tractor with rear-wheel drive.

Models

  • L 325: basic model, flatbed, rear-wheel drive
  • LK 325: tipper, rear-wheel drive
  • LS 325: tractor: rear-wheel drive

technology

Chassis and power transmission

The L 325 is a two-axle truck with a U-profile ladder frame , the cross members of which are riveted to the side members. The two rigid axles are suspended from two leaf springs at the front and rear . The rear axle also has progressive auxiliary springs. For the front axle, shock absorbers were available ex works on request . The size 10–20 eHD tires are mounted on tapered shoulder rims of size 7.5–20, with twin tires at the rear. Reinforced tires of the same size were available on request. The Teves brake system works hydraulically with compressed air support on all four brake drums . It is steered with a worm steering system with an undivided tie rod ; the L 325 is only available as a left-hand drive.

The driving force is from the engine via a single dry type Fichtel & Sachs LA 50 to a five-speed mechanical claw transmission of the type AK 5-33 of ZF transmitted, which is interlocked with the engine, and from there via a cardan shaft to the bevel gear differential gear to the rear axle. There is no all-wheel drive for the L 325. Tipper trucks have a drive for the tipper oil pump, which is driven by the gearbox.

engine

The L 325 is powered by the Mercedes-Benz OM 325 diesel engine introduced in 1954 . The OM 325 is a six-cylinder in - line engine with pre-chamber injection and water cooling . The engine block, consisting of the cylinder block and crankcase, is made of nickel-alloyed cast iron. The cylinder bore is 105 mm, the piston stroke 140 mm. The engine has a displacement of 7274 cm³ and makes 125 hp. The pistons from Mahle are cast from light metal. They have four piston rings , one of which is chrome-plated , and two oil control rings . The power is transmitted via connecting rods with a double T-shaft cross-section to a forged crankshaft with counterweights and vibration dampers, which is hardened at all bearing points and has seven bearings .

The crankshaft drives the camshaft with seven bearings in the crankcase via spur gears, which actuate the vertically hanging valves via tappets , push rods and rocker arms . Each cylinder has an inlet and an outlet valve. The two three cylinders spanning cylinder heads are removable and have an asbestos cylinder head gasket .

The sucked in air is cleaned by two oil bath air filters with suction silencers and reaches the cylinders via a suction pipe that is led through the cylinder head cover . The fuel is cleaned with a Filzvorfilter and a centrifugal speed governor-controlled fuel injection pump of the type 6A 80 410 B RS 64/7 Bosch PES through an injection nozzle of the type Bosch DNO SD 211 in the atria injected. The engine is lubricated with a pressure circulation lubrication ; the oil delivered by a gear oil pump is cleaned by a filter in the main flow. The engine oil pan under the crankcase is made of light metal. The engine is cooled with a water pipe cooler, whose warm exhaust air is blown away by a fan.

Technical data 1956

Parameters L 325 LK 325 LS 325
Dimensions and weights
Wheelbase (mm) 4600 4200 3600 4200
Length (mm) 8160 7240 6070 6670
width (mm) 2500
Height (mm) 2450
Front track (mm) 1865
Rear track (mm) 1726
Ground clearance (mm) 355
Turning circle diameter (m) 17.4 16.25 13.5 15.2
Empty weight kg) 5280 [5300] 5680 [5700] 4480 [4500] 4500 [4520]
Payload (kg) 6020 [6700] 5970 [6300] 6280 [7500] 6800 [7480]
Maximum permissible total weight (kg) 11300 [12000] 11650 [12000] 11300 [12000]
Powertrain
coupling Single-disc dry clutch
Fichtel & Sachs LA 50
transmission ZF all-claw transmission ZF AK 5-33 ,
not synchronized, 2 - 5th gear, low-noise
Gear ratios 1st gear: 5.56
2nd gear: 2.93
3rd gear: 1.66
4th gear: 1.00
5th gear: 0.64
R. gear: 5.12
Translation from the gearbox to the rear axle 9.20
Top speed 70 km / h
Top speed at maximum torque 5 km / h in 1st gear at 1300 min -1
Effective total braking area 1560 cm² (front)
2180 cm² (rear)
engine
Type Six-cylinder, four-stroke in-line diesel engine,
two valves per cylinder, pre-chamber injection
Engine designation Mercedes-Benz OM 325
cooling Water cooling
Bore × stroke 105 × 140 mm
Displacement 7274 cc
rated capacity 125  DIN-PS (92 kW) according to DIN 70020 at 2200 min -1
maximum torque 44  kpm (431.5 Nm) at 1300 min -1
Medium work pressure 7.62  kg / cm² (7.47 bar)
Injection pressure 135  kp / cm² (132.4 bar)
Medium piston speed 10.3 m / s
Compression ratio 19: 1
Firing order 1-5-3-6-2-4
Inlet valve opens 9.5 ° before top dead center
Inlet valve closes 44.5 ° after bottom dead center
Outlet valve opens 54.5 ° before bottom dead center
Outlet valve closes 18, 3 ° after top dead center
Engine ground 780 kg
Glow plug Bosch KE / GA 1/8 or
Beru 214 Ge (50 - 70 W)
Fuel consumption according to DIN 70030 16.9 l [17.3] l / 100 km no information
Oil consumption 300 ml / 100 km
Filling quantities
Capacity of the fuel tank 100 l
Oil sump capacity 9-12 l
Capacity of the cooling system 47 l
Capacity of the gearbox housing 4 l
Electrical system
Starter Thrust armature starter Bosch BNG 4/24 CR 204 , 24 V
alternator Bosch LI / GK 300 / 12-1400 R 18 , 12 V, 300 W Charging begins
at a crankshaft speed of 668 min −1 , drive via two V-belts
battery 2 × 12 V lead acid accumulator 105 Ah,
under the driver's seat

[] Weights in square brackets: With reinforced tires

Individual evidence

  1. a b c Mercedes-Benz archive: New type designations for trucks and buses

literature