Belarus 80.1 Operation Manual page 268

Further according to the calculated loads as per table 4.2.2 of load norms, tyre
pressure shall be selected (subsection 4.2.8 "Selecting of optimal inner pressure in tyres
depending on operational conditions and load on tractor axles, instructions for use of
tyres").
Calculation of tractor controllability criterion without water solution in front tyres:
Calculation of tractor controllability criterion with water solution in front tyres:
Т is load on front tractor axle, N;
f
k is tractor controllability criterion;
f
M is tractor operational weight (when calculating, the weight of ballasts loads is not
taken into account in tractor operating weight М), kg;
m is water solution weight in front tyres of tractor wheels, kg.
3
g is a value, equal to 9.81 m/s
ATTENTION: COUPLING OF THE IMPLEMENTS TO THE TRACTOR SHALL NOT
RESULT IN EXCESS OF PERMISSIBLE AXLE LOAD AND LOADS ON THE TRACTOR
TYRES!
ATTENTION: MINIMUM WEIGHT OF THE IMPLEMENTS COUPLED AND BAL-
LAST WEIGHTS USED SHALL ALWAYS MAKE NOT LESS THAN THE VALUES AT
WHICH LOAD ON THE FRONT TRACTOR AXLE IN THE STRUCTURE OF MTU AL-
WAYS MAKES NOT LESS THAN 20% OF THE TRACTOR OPERATING WEIGHT, AND
THE CONTROLLABILITY CRITERION MAKES NOT LESS THAN 0.2!
, where:
2 .
268
80-0000010B OM