KIROVETS K-744R1, K-744R2, K-744R3, K-744R4 tractors
102
Press the sound alarm button on the understeering switch - a sound signal should be heard.
Activation of the turn signal handle “right” - “left”; at the same time, the lamps at instrument
panel and the light lamps should flash.
Press the brake pedal; in doing so, the rear light lamps should illuminate with bright red light.
Check that the air pressure in the pneumatic system is not below 0.45 MPa (4.5 kgfс/cm
2
).
Pull up the parking brake; in doing so, signal lamp
on the instrument panel (Fig. 6)
should flash.
Having switched on the "frame" and turned the starter and instruments switch to position "I",
counter of tractor lifetime hours on the instrument panel (Fig. 6) shall show a digital value.
After the engine start, battery charging indicator shall go out at the instrument panel.
Tractor condition menu represents the current voltage value in the battery circuit, it shall be
27±0.7V;
9) adjust the driver’s seat depending upon his weight and height;
10) set the required air pressure in tyres.
SELECTION OF THE BEST POSSIBLE INTERNAL PRESSURE IN TYRES, DEPENDING
UPON OPERATION CONDITIONS AND LOAD ON TRACTOR AXLES
Selection of the best possible pressure in the tyres of wheel tractors and degree of its influ-
ence on the roadhold depend on the type of soil and the load acting on tractor axles. Air
pressure in the tyres impacts the support spot of wheel contact with the soil and, depending
on soil conditions, influences its roadhold properties and tractor productivity in operation.
Tyre load standards for selection of operation mode with various internal pressures and
speeds shall be set by the tyre manufacturer and given in Table 3.
Pressure value depends on the speed and loads on tractor axles, created by the weight of
hooked-up machines with regard to own operation weight of the tractor and ballast, and to
operation conditions.
Internal pressure in tyres for each specific tractor hook-up case is different. That is why,
when tractor operation conditions are changed, it is required to check and, if needed, adjust
the pressure in tyres. Non-observance of the pressure standards significantly reduces the
tyre operation period.
It is possible to select the tyre pressure and to determine the need for ballasting, weight and
type of ballast only after determining the value of loads on tractor axles. The exact value of
load on front or rear tractor wheels in a specific case of tractor usage can be determined only
by the way of actual weighing of the tractor with the hooked-up machine.
