The invention relates to a multi-link tracked vehicles, and particularly to a caterpillar tractor to tow a two-tier road-building complex "Polar elephant." A distinctive feature is the introduction of a known motor circuit YMZ-847.10, matching reducer (the cooling fan drive motor and the PTO), automatic hydromechanical transmission «Allisson» or «ZF», reducing gear (dvuhstupenchatoy transfer case), the transfer gearbox lockable differential ( one or dvuhstupenchatoy), front and rear tail and a bevel gear. The proposed utility model will ensure the implementation of the engine torque to the track mover towing road-building complex "Polar Elephant" at all times, on difficult terrain in off-road and underdeveloped road network (swamps, wetlands, virgin snow, dirt roads during the thaw and etc.); high cross on rough terrain (slopes, ditches); possibility of operating at an ambient temperature of minus 50 ° C to 40 ° C; overcoming water obstacles without any special training.
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