KIROVETS K-744R1, K-744R2, K-744R3, K-744R4 tractors
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When selecting the standards for operating modes of the tyre, follow the data given in Tables
3 and 4.
Best possible tyre pressure shall be determined by tractor weighing using the following
method:
determine the weight on the front axle with operating equipment lowered;
determine the weight on the rear axle with operating equipment lifted;
Set the tyre pressure as per measured weight. When operation conditions are changed, tyre
pressure and ballasting may need an adjustment’.
CAUTION! SET TYRE PRESSURE WITH REGARD TO LOADS AND SPEEDS
IN EFFECT FOR THE WORK BEING PERFORMED!
Keep the records for each tyre separately. To this end, a “Tyre operation registration card” is
to be established (Appendix 8), which is the main document characterizing the tyre operation
in case of reclamation, write-off to scrap as well as in other cases. The internal pressure in
tyres should be registered in the “Logbook for registration of measurements of the internal air
pressure in tyres” (Appendix 7).
Pressure is measured at least once in every five days before tractor traveling for work execu-
tion. The results shall be registered in the logbook.
Check the tyre pressure using serviceable instruments with division value of 10 kPa max,
which would provide for credibility of measurements. Acceptable maximum pressure devia-
tions in tyres are ± 10 kPA by readings of the pressure gauge that must be systematically
checked for the reading accuracy. Air pressure in tyres shall be controlled in cold state.
Mounted controls add a lot of load on the rear axle that is why take this additional weight into
account when selecting the tyre pressure. For the tractors with heavy mounted implements, it
is required to reduce the rear tyre pressure to assume an additional load during transport
movement.
RULES OF PNEUMATIC TYRE OPERATION
Traveling speed of the tractor with mounted implements shall not exceed 15 km/h in motion
over an even road and 10 km/h in motion over a bumpy road or off-road.
When the tractor is moving with a tyre pressure below 0.17 MPa, the speed shall not exceed
20 km/h.
To prevent an untimely failure of tyres, observe the following rules:
do not permit tractor operation with significant wheel slip;
