They were given the name of tracked truck, those that have three axles, with traction on the two rear ones, this more specifically is the most common and called 6x4, but there are also those with two axles that provide traction, the 4x4, 4 axles with traction on the two rear ones, the 8x4, and even with 3 axles, all with traction, the 6x6, generally for military operations, among others. Almost all brands that settled in Brazil would offer tracked trucks from the 60s onwards, however, the AGL series from MB had greater notoriety, in this series, several models made history, prepared mainly for the agroforestry, dump truck and concrete mixer sectors. In 1970, Mercedes, when renewing its truck line with the new direct injection engine, OM-352, launched, for example, the 1113, and also its first factory-made 6x2, the 2013. Even so, before its first layout, the largest manufacturer of land military equipment in Brazil, the now defunct Engesa, participated in the truck market offering all-wheel drive systems, 4x4, 6x4 and 6x6, equipping, for example, Chevrolets, Fords, Dodges, and creating, based on the Mercedes Benz L-1113, the LG-1213 military truck with 6x6 traction. For the 1971 line, Mercedes Benz launched the first in a sequence of layouts in which the numbering began with 22, it was the L-2213, with the same mechanics as the 1113, a 6-cylinder, 5.7-liter OM-352 engine and 130 hp, 5-speed synchronized gearbox, with a GVW of 21,650 kg, the suspension was the same as the 2013, tandem type, a suspension type to favor weight distribution between the two axles and work better on uneven terrain, the versions of the Mercedes tracks would be divided into 3, L/LK and LB. In 72, a new engine debuted in the line, the OM-355, with 5 cylinders, 9.7 liters and 192 horsepower, with this engine the 1519 were launched, starting a new line of mechanical horses, with a sleeper cab and six-speed gearbox, the new engine would be used on tracks a little further ahead. In the 1975 model year, the OM-352 engine debuted in a turbocharged version with 156 hp, which would give rise to the 1516 and 1316 trucks, as well as the L-2216, LK-2216 and LB-2216 models. Meanwhile, two trucks were built based on the 1519, which were made military-grade by the partnership between Bernardini and ENGESA: the LG-1519 & LG-1819, which received 6x6 boomerang-type traction, intermediate reduction gear, differential lock on all three axles, spoked wheels, armored military tires and a tow hook, meeting the demand of the EB. Finally in 1976 for the 77 line, Mercedes launched the 2219, which used the OM-355 five-cylinder, 9.7-liter naturally aspirated engine with 192 hp, also in the three versions L, LK and LB, the total gross weight was 22 tons and GVW of 32 tons, widely used in the Romeo and Juliet version, the most powerful 6x4 Mercedes to date, which dominated the medium-duty truck market. In response to the now classic 2213, Ford launched its second layout on the market in 1982, the F-22000, and Chevrolet the D-70 6x4, while Volkswagen bought Chrysler do Brasil and launched some trucks, the Dodge E-21 alcohol-powered, and later the 22-160. 1980 was the decade of alcohol, in 1984 Mercedes also presented some models of routes for the sugarcane sector, the L-2215 and the L-2219, both 6x4, the one that would stand out the most would be the 2215, this used the M-352 engine converted to alcohol. In 1986, the 156hp OM-352 A engine that gave rise to the 2216 was modified to generate 170hp, and in the 1987 line they gave way to the 2217. In the mechanical horses, the 192hp OM 355 engine gained a turbo, increasing power to 238hp and giving rise to the LS-1524. The turbo engine would also pass to its sibling, the 2219 model. However, before that, an interesting fact happened: in 1987 for the 1988 line, Mercedes-Benz decided to rename the models, with an extra number, from the 2213 which became 1114, to the 2217 which became 2218, and the 2219 which became 2220. With that, the LS-1524 mentioned above, with a 355 turbo engine, became known as the 1525, and the model 2219 when receiving the turbo engine was renamed 2225, it was the strongest brother of the family, had a load capacity of up to 38 tons of gross combined weight (PBTC) and 51 tons of maximum traction capacity (CMT), the OM-355/5 A engine, turbocharged, generated 238hp and 98kgf.m of torque. (238hp NBR of power at 2100 rpm and 98 mkgf of torque at 1200 rpm), it was a high torque at low revs. The gearbox was synchronized from ZF, (model 4S-120 GP), with eight gears. During this period, it was the end of the AGL series, which was already 25 years old, the arrival of the Volkswagen in 1981, and the Ford Cargo in 1985 intensified the competition, Mercedes was already testing the new OM366 engine, and in July 1989 the new models of the HPN series began to be launched, which would also replace the tracks. Channel CONTACT: [email protected] FACEBOOK: / qravolantao