The Kirovets K-743M is a full-time four-wheel-drive articulated agricultural tractor manufactured by Saint Petersburg Tractor Plant OJSC — one of Russia's most storied heavy machinery producers, with manufacturing roots dating to 1801. Assigned to traction classes 6–8, the K-743M is the 430 hp variant within the K-7M Weichai series and is powered by a Weichai WP12 turbodiesel: an inline six-cylinder unit displacing 11.6 litres, producing a peak torque of 2,060 Nm and rated at a specific fuel consumption of 148 g/hp·h (202 g/kW·h).
Drive is delivered through the T7 automatic gearbox offering 16 forward and 8 reverse gears arranged across four and two ranges respectively; shifts within a range are power-shift — fully load-carrying with no clutch pedal and no interruption of traction. Front and rear T400 axles carry no-spin locking differentials and planetary final drives; the front axle is suspended on semi-elliptic leaf springs with hydraulic dampers while the rear is rigidly mounted.
Operating weight on single 710/70R38 tyres is 16,400 kg. The KOMFORT PLUS two-seat cabin sits on hydraulic anti-vibration mounts, delivers a maximum interior noise level of 75 dB, and is fitted with full HVAC and the fourth-generation КОМАНДПОСТ-4A console featuring an onboard computer with touchscreen display.
Standard КИРОВЕЦ-АГРОМОНИТОР telematics provides live remote monitoring of position, speed, fuel consumption, and fault codes. Annual rated productivity is 1,500–3,000 engine hours, with a single machine capable of preparing and seeding up to 5,000 ha per crop season.
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