KIROVETS K-744R1, K-744R2, K-744R3, K-744R4 tractors
16
ЯМЗ-238НД5
–
on K-744R1St tractor;
8481.10
–
on K-744R2St tractor;
8481.10-02 and 8481.10-04
–
on K-744R3St, K-744R4St tractors.
Cummins engines are installed on K-744R1Pr tractors andOM457LA (Mercedes) engines
are installed on K-744R2Pr, K-744R3Pr and K-744R3Pr tractors.
The engine start-up is performed by an electrical starter. In order to facilitate start-up at low
temperatures, the tractors are equipped with a pre-starting heating system.
The
air cleaning system
isdry, double-stage, combined, with dust suction into the exhaust
pipe. The air cleaner manufactured by Donaldson is used on the tractors.
The engine
cooling system
is closed, with compensating circuit, with forced circulation of the
cooling fluid. In order to maintain the optimum heat conditions, the engines are provided with an
automatic fan control system.
ATTENTION!
In order to avoid radiator destruction,
IT IS PROHIBITED
to increase the
engine speed over 1,200 RPM at the oil temperature in the hydraulic system below
30°С.
The system warm-up shall be performed by making tractor turns from one extreme
position to the other, with holding at the stop during 3...5 seconds each time or by
forced lowering of the mounted implement.
ATTENTION!
IT IS PROHIBITED
to fill the engine cooling system and heating system
with water.
The
fuel system
consists of a fuel tank, hand fuel boost pump (located under the cabin in the
direction of tractor travel in the vertical hinge pivot area), fuel coarse and fine mesh filters, high-
pressure fuel pump with variable speed regulator, automatic coupling of fuel injection advance,
low-pressure and high-pressure fuel pipelines and nozzles.
The
gas discharge system
is with one silencer and connecting branch pipes.
The tractor
transmission
includes a semi-rigid coupling and a pump drive reducer, a gearbox,
a cardan drive, an intermediate support and driving axles.
The
semi-rigid coupling and the pump drive reduce
r
serve for transmission of torque from
the engine to the gearbox. The reducer also performs driving to the pumps of hydraulic systems
for control of turns and mounted implement as well as provides engine deactivation from
transmission in case of idle start-up. Two lifting eye-bolts are installed in the casing of the pump
drive reducer for the purpose of its installation and dismantling.
