Mercedes-Benz » MK / SK 1 серия
A new MK / SK range for normal and heavy-duty road conditions actually was a modernized NG range. A new design included a new grille and side windows, which now had a bigger area and a sloping bottom border. The range consisted of models from "1417" to "2244", received inline or V-type diesel engines with an output from 170 to 435 hp with turbochargers and three types of cabins. In 1989, a power of the base 14.6-liter diesel engine OM442 V8 has been increased to 492 hp. The most powerful in Europe at that time truck tractor "SK1748LS" with this engine has received the award "Truck of the Year 1990". Heavy 3- and 4-axle chassis 2435/3535 with the GVW of 40 tons were produced on the Weert plant. The special trucks 2653LZ (6x4/6x6) and 3850S (8x4) with a GCVW up to 410 tons were equipped with a diesel OM424A V12 engine with an output of 500-525 hp. There were also made several copies of a 5-axle dump truck 5035 (10x4). The heavy versions were equipped 6-16 speed gearboxes and an electro-pneumatic control system, ABS and traction control ASR. Since 1992, the truck tractors SK1844 / 1944LS began to equipped with a more spacious and comfortable Eurocab with an internal height of 2110 mm. Thus, the MK / SK range included 55 basic models with a GVW of 14-35 tons, power of 165-530 hp and the wheel configurations from 4x2 to 8x8. In addition, there are 14 variants with a different length of the wheelbase, 24 variants of gear ratios and 6 types of cabs: "S", "M", "L", "GR", "L-Eurocab" and "GR-Eurocab". All the cabins are different by the equipment and an internal height (from 1545 to 2090 mm). The MK /SK range opens with light "1417" and "1424" models, which as an exception attributed to a heavy class. The GVW of these models is even lower than GVW of similar models "1517" and "1524" light class models. But there are some difference between the LK and MK / SK ranges. If we compare the "1417" (MK / SK range) and "1517" (LK range), we will see that using the same engine, gearbox and chassis, the "1417" model is about 720 kg heavier than "1517". Also the chassis and suspension of the "1417" model is much stronger. The difference between the "1424" and "1524" model is even more evident, because the first one has a larger volume engine designed for heavy road conditions. There were versions with a pneumatic rear suspension (L model), truck tractors (S model), truck tractors with a pneumatic suspension (LS model), dump trucks (K model), all-wheel drive dump trucks (AK model). The braking system is a pneumatic dual circuit with drum brakes, automatic adjustment of the gap, intarder and ABS as an option.