During the war, about 80% of MAN’s factory buildings were destroyed, but production equipment and spare parts stock were stored in the countryside. A few trucks were built in Nuremberg as early as 1945. Before the war, MAN’s tractor production had focused on large models, but now there was demand rather for smaller tractors. As early as 1941, MAN had introduced a prototype of a 25-horsepower tractor, which was now taken into further development. Familiar solutions ended up on the drawing board, such as a frameless design where the engine is a load-bearing part. Production began in 1948, which was early compared to many competing German brands. The AS 325 H had a 2.7-liter water-cooled, direct-injection four-cylinder diesel engine and a ZF 5-speed transmission. The tractor was well-equipped: it included, among other things, a differential lock, steering brakes, a leaf-sprung front axle, 12-volt electrical system, and a speedometer. The marketing name chosen was Ackerdiesel (=field diesel). The tractor’s color was more turquoise-tinged than the previous green.

At the very beginning, a four-wheel-drive model, the AS 325 A, was also introduced, which was one of the first German four-wheel-drive tractors. Power for the front wheels was taken from the side of the transmission. The front wheels were only slightly larger than on the rear-wheel-drive model.

In 1950, the AS 330 was introduced alongside, with the engine capacity increased to 2.9 liters and power to 30 horsepower. The majority of production was four-wheel-drive models. The AS 330 A is probably the first four-wheel-drive tractor imported to Finland. Cheaper competing brands flooded the market, and MAN did not achieve a very high market share with rear-wheel-drive tractors.

In 1952, the AS 430 was introduced, featuring a 6-speed transmission and more powerful brakes, as well as the AS 440, where the engine speed was increased from 1500 to 2000 rpm. Power rose to 40 horsepower. An optional lowering crawler gear was available, which also allowed the power take-off speed to be reduced from 735 to 550. The same engine, enhanced by another 2 horsepower, was installed in larger frames in the AS 542 model. It also had a sturdier transmission and rear axle.

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Tractors

MAN AS 325 – AS 542

In the years 1956 and 1957, MAN renewed the tractor model designations. The letters in alphabetical order F/K/L/N/R/S/T indicated the size class. At the front was a 2 or 4 depending on the number of driving wheels. At the end was a running number starting from 1 for the model version. In 1956, the engines were the same M-engines as in the previous models, but in 1957 the displacement increased. The external dimensions of the new models were significantly larger in every direction. A dual clutch was available as an optional extra. The gearboxes and range gears were from ZF, the lifting devices and electrical equipment were produced by Bosch.

In the S-models, power rose to the 50 hp class (the same tractor had already been introduced at the end of the previous model series under the name A 50 A). The largest MAN tractor was the 60-horsepower 4 T 1, but only 9 units of those were produced. With the new models, the annual production volume of MAN tractors rose from around 3,000 units to a peak year of 1959 with a total of 6,887 tractors.

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MAN N1 – T1

By the 1960s, MAN made decisions to improve the profitability of its tractor production. Small models were gradually phased out, and focus was placed on three power categories: 28, 35, and 45 hp. New models introduced at the end of 1960 were the 3-cylinder, 35-horsepower P-models. The appearance was modernized to a more streamlined look, and the design returned to a lower and shorter concept, which was now based on a medium-length chassis. The engine was 1.9 liters, whereas the previous P-model had a 3.9-liter engine. Correspondingly, the torque figures were significantly weaker than before. The gearbox chosen was the latest ZF 8+4-speed. The lifting capacity was reduced to 1.2 tons. Prices were still 10 to 20% above those of competitors.

In 1961, 4-cylinder R-models were introduced, retaining a 2000 kg lifting device, as well as 2-cylinder N-models (28 hp). All four-wheel drive models came standard with a dual clutch. In Finland, this MAN model range was sold by OTK. The SAE power ratings for the P- and R-models were listed here as 39 and 50 hp. Approximately 400 MAN tractors were sold in Finland, of which nearly all were four-wheel drive.

Unlike tractor production, MAN’s truck production grew strongly in the early 1960s. In the summer of 1962, a decision was made to sell the tractor production to the Mannesmann Group, which had already acquired Porsche-Diesel. Mannesmann planned for MAN, focused on heavier tractors, to complement the Porsche range. However, the end result was that the last MAN tractor was produced in February 1963.

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MAN N1 – R3

In 1957, when MAN tractor production moved to Munich, the rear-wheel-drive model of the B 18 was replaced by the 2 K 1 model. The four-wheel-drive model followed only in 1959. During this period, the range of small tractors was expanded in both directions. Still in 1957, the 24-horsepower 2 L 1 was introduced. At the beginning of 1958, the 13-horsepower 2 F 1 came out, whose engine was, unlike the others, air-cooled. The 2 F 1 was also the first model to feature a redesigned hood shape curved in all directions. All small models had an engine based on the Güldner design, but with MAN’s M-injection method. The transmission was a 6-speed ZF, which was also used in, among others, Güldner and Fahr tractors. The main focus for the small models was now, for the first time, on rear-wheel-drive versions, and sales were significantly increased.

MAN also invested in road tractors aimed at towing full trailers. Therefore, on the small tractors, the lifting device was still an optional extra and had a modest lifting capacity (350 kg) compared to the bigger models' 2-ton lifting capacity. The weight transfer system was not present in the small MAN tractors. In 1960, the 4 L 2 model introduced a 600-kilogram lifting capacity. Earlier versions generally had a longer wheelbase, and short-wheelbase versions, such as the 2 K 3 and 2 L 3, were initially introduced as export models. The long-wheelbase model 2 L 5 also had a 235 kg hydraulic system between the axles. The era of small MAN tractors came to an end in 1962. These models accounted for over half of production, but competition was too strong to make production profitable.

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MAN 2 F 1 – 2 L 5

In the autumn of 1955, MAN's truck, bus, and tractor production moved to Munich, into the former BMW aircraft engine factory. Only engine production remained in Nuremberg. At the same time, a renewed tractor lineup was introduced, featuring M engines. In these engines, fuel was injected onto the walls of the spherical combustion chamber. The intake air was swirled, mixing with the fuel on the combustion chamber walls. The main advantage of this method was the engine's quietness. MAN's tractor range still focused on fairly large and well-equipped four-wheel drive tractors. The power classes in the new lineup remained the same as before. Also, in the four-wheel drive models, the front axle was suspended and front fenders were standard equipment. At this stage, tractor-patterned front tires also started to appear. The A 45 was an intermediate model produced for only half a year and still had the old engine.

In 1956, the stroke length of the engines was increased. The maximum power remained unchanged but was achieved at a lower engine speed. Also in 1956, the 2-cylinder four-wheel drive tractor A 25 A was introduced. It featured ZF's continuous engagement 5+1 gearbox.

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MAN A 25 – B 45

At the beginning of 1955, the MAN AS 718 was replaced by the B 18. The engine was still a 2-cylinder Güldner. One smaller gear was added to the ZF transmission, and due to the new gearbox, the wheelbase increased by 5 centimeters.

In the autumn of 1955, despite its Güldner engine, the smallest model in the lineup also received the M engine introduced in other MAN tractors, where fuel was injected onto the walls of the combustion chamber. The engine was quieter than before and, at least according to advertisements, also more economical.

In 1956, a rear-wheel-drive model, the D 18 H, also entered production.

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MAN B 18

The market share of MAN tractors in Germany fell to a couple of percent, as there were plenty of competitors and the highest sales volumes were concentrated in the smallest class of tractors in a country with 5 million farms. MAN wanted to bring its four-wheel drive expertise to this size category as well. The engine was obtained from Güldner, with whom it already had a collaboration. The 2-cylinder pre-chamber diesel engine had a power output of 18 hp. The transmission was a 5-speed ZF.

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MAN AS 718

More from this manufacturer

At the beginning of 1955, the MAN AS 718 was replaced by the B 18. The engine was still a 2-cylinder Güldner. One smaller gear was added to the ZF transmission, and due to the new gearbox, the wheelbase increased by 5 centimeters.
In the autumn of 1955, despite its Güldner engine, the smallest model in the lineup also received the M engine introduced in other MAN tractors, where fuel was injected onto the walls of the combustion chamber. The engine was quieter than before and, at least according to advertisements, also more economical.
In 1956, a rear-wheel-drive model, the D 18 H, also entered production.
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MAN B 18 A/O

Malli

Hinta (sis. alv)

Series specifier

Manufacturer name

Model specifier

Imported to Finland

Years

First year sold

Last year sold

Engine model

Cyl/Turbo/Intercooler

Displacement

Bore x stroke

Power

Power speed

Rated power hp/rpm DIN

Rated power

Rated speed

Max power hp/rpm DIN

Max power

Max speed

Rated power hp/rpm ISO

Max power hp/rpm ISO

Max power hp/rpm

Rated power hp/rpm ECE

Max power	hp/rpm ECE

Rated power hp/rpm SAE

Rated power hp/rpm PTO

Rated power hp/rpm engine pulley

Rated power hp/rpm

Torque Nm/rpm

Torque Nm/rpm ECE

Torque Nm/rpm ISO

Torque Nm/rpm SAE

Torque Nm/rpm DIN

Gears

Creeper speeds

Synchronized gears

Powershift gears

Reverser

Speeds in km/h

Max. speed 

Hydr. flow l/min

Hydraulic pressure

Lift controls

Lift capacity

PTO speeds

Brakes

Steering

Turning circle m 2WD

Turning circle m 4WD

Front tyres 2WD

Front tyres 4WD

Rear tyres 2WD

Rear tyres 4WD

Weight 2WD

Weight 4WD

Height with cab

Length (2WD/4WD)

Wheelbase (2WD/4WD)

Fuel tank

Cab noise level

Solid cab

Diff. lock

Autom. differential locks

Air suspension seat

Air conditioning

Trip computer

Creeper gear

Sylinterien lukumäärä

Iskutilavuus

Iskusuhde

Suurin vääntömomentti, Nm

Suurin vääntömomentti, r/min

Vääntömomentin nousu

Polttonesteen kulutus suurimman tehon pisteessä

Kytkimen tyyppi

Ajovoimanotto

Nopeus eteenpäin moottorin nimellisnopeudella, pienin

Nopeus eteenpäin moottorin nimellisnopeudella, suurin

Jarrut

Hydrauliikan suurin paine

Hydrauliikan suurin tuotto

Nostolaitehydrauliikan hallinta

Ulkopuolinen hydrauliikka, venttiililohkoja

1-toimisia

2-toimisia

Nostovoima (kN=100 kg)

Hydrauliikan tyyppi

Kääntöympyrän halkaisija ilman ohjausjarrua

Eturenkaat

Takarenkaat

Kokonaismassa säiliöt täynnä vakiovarustein

Etuakselipaino

Taka-akselipaino

Suurin korkeus (ohjaamon ylimpään kohtaan)

MAN B 18 A/ D 18 H

Etusivu

Ajoneuvot ja ympäristö

Huolto ja tekniikka

Lukijan idea

Maarakennus

Maatalous

Osastot

Metsä

Pääkirjoitus

Uutiset

Weteraani

Yritykset ja tapahtumat

Lukijan kuvat

Koneviesti

Lehdet

Konedata

Palvelut

Tilaa Koneviesti

Asiakaspalvelu

Jätä ilmoitus

Tilaa uutiskirje

Lähetä uutisvinkki

Lähetä palautetta

Lähetä oikaisupyyntö

Toimituksen yhteystiedot

Mediamyynnin yhteystiedot

Ota yhteyttä

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Model	MAN B 18 A/O	MAN B 18 A/ D 18 H
Options
Manufacturer name	MAN	MAN
Imported to Finland	No	No
Years	1955-55	1955-58
First year sold	1955	1955
Last year sold	1955	1958
Engine model	2 DN	D 8515 M
Cyl/Turbo/Intercooler	2	2
Displacement	1304 cm³	1304 cm³
Bore x stroke	85×115 mm	85×115 mm
Rated power hp/rpm DIN	18/1800	18/1800
Rated power	18	18
Rated speed	1800	1800
Torque Nm/rpm DIN	74/1400	74/1400
Gears	6+1	6+1
Speeds in km/h	1,9-20,0	1,9-20,0
PTO speeds	540	540
Brakes	drum brakes	drum brakes
Steering	mech.	mech.
Turning circle m 4WD	6.5	6.5
Front tyres 2WD	-	5.00-16
Front tyres 4WD	6.00-20	6.00-20
Rear tyres 2WD	-	8-32
Rear tyres 4WD	8-32	8-32
Weight 2WD	-	(1450) kg
Weight 4WD	(1600) kg	(1600) kg
Height with cab	(168) cm	(168) cm
Length (2WD/4WD)	280 cm	280 cm
Wheelbase (2WD/4WD)	175 cm	175 cm
Fuel tank	30 l	30 l