Selection Of Optimal Inner Pressure In Tires Depending On Operational Conditions And Load On Tractor Axles; Selection Of Optimal Inner Pressure In Tires Depending On Operational Condi; Tions And Load On Tractor Axles - Belarus 922.6 Operator's Manual

If the cap is secured with bolts, then in order to work with the PTO remove the protective
cap covering the shaft end. To do so, unscrew 2 fastening bolts. After the operation with PTO
is finished, it is necessary to put the cap back in its place by screwing up both bolts.
Figure 3.2.1 – Protective cap removal and PTO shaft end replacement
To replace the shaft end, do the following:
- unscrew four nuts 1 and remove slab 2 with cap 3;
- unscrew six bolts 4, remove plate 5 and extract shaft end 6;
- grease center pilot 6 with solid lubricant and mount another shaft end into the spline
opening, mount plate 5, screw up bolts 4, mount slab 2 and secure it with nuts 1.
3.2.8 Selection of optimal inner pressure in tires depending on operational
conditions and load on tractor axles
3.2.8.1 Selection of optimal inner pressure in tires depending on operational
conditions and load on tractor axles
Selection of optimal air pressure in tires of wheeled tractors and degree of its influ-
ence on gripping abilities depend on soil type and load, applied to tractor axles. Air pressure
in tires influences the wheel point being in contact with soil, and affects its gripping abilities
as well as tractor operational performance depending on soil conditions. Rates of loads on
tires for selection of operation mode at various inner pressure and speed are set forth by a
tire manufacturer and are provided in table 3.2.3.
Pressure value depends on travel speed and weight loads on tractor axles, created
by weight of coupled implements with due account for tractor own weight and ballast weight
and also operation conditions.
Inner pressure in tires for each specific case of tractor coupling with implements is
different. That is why if tractor operational conditions are changed, it is required to check
and if necessary, adjust pressure value in tires. Failure to comply with pressure rates de-
creases tire life significantly.
Tractor operation with tire pressure set below the required rate, results in the follow-
ing wheel failures:
tire turning on rims;
wearing of tire bead against rim edge;
cracks on tire sides appear;
ply separation or rupture of a tire;
tear-out of tire valve (for tubed tires);
Operation with tire pressure set higher than the norm, results in the following wheel
failures:
noticeable increased wear of tires;
stretching of carcass layers and decrease of tire flexibility;
increased skidding of wheels;
increased sensitivity to impacts and cuts.
1 – nut; 2 – slab; 3 –cap; 4 – bolt; 5 – plate; 6 – shaft end.
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922.6-0000010 OM