Belarus 82.3 - Procedure of Complete Release of Water or Aqueous Solution from Tires; Selecting Inner Pressure in Tires

82.3-0000010 OM
142
4.10.7 Procedure of complete release of water or aqueous solution from tires
For complete removal of liquid, take the wheel off the tractor, clean and wash it, and
put it on a clean floor or a wooden platform. Then proceed as follows:
- remove the valve cap and screw the spool out;
- discharge air from the tire and drain the liquid;
- move both tire beads off rim seats into its cave on the side opposite to the valve location;
- insert two tire irons between the tire bead and the rim on the side of the valve at a
distance of approximately 100 mm on both sides of it;
- at first pull over through a rim edge a part of the bead near the valve, and then by
gradually moving the tire irons along the rim’s circumference, remove the entire outer bead
of the tire from the edge;
- remove the valve from the hole in the rim in such a way so as not to damage the tube
and not to tear off the valve;
- remove the tube from the tire;
- drain water out of the tube by squeezing it with hands;
- then mount the tire on the wheel rim in compliance with assembly rules and with
the required safety measures;
- remove the cap off the valve and inflate the tire with air to reach a normal pressure
according to the instructions of subsection 3.2.8 “Selection of optimal inner pressure in tires
depending on operational conditions and load on tractor axles, instructions for use of tires”;
- put the cap on the valve and fasten the wheel on the tractor.
4.10.8 Selecting inner pressure in tires
Internal air pressure in the tractor tires depends on their design, number of cord
plies, permissible vertical load on a wheel set out by the manufacturer and travel speed. In
case the operating conditions have been changed, it is required to adjust the tire pressure.
Maintaining the adequate internal pressure in the tires effects significantly the grip-
ping features, passing ability and tire life. Reduction of internal tire pressure promotes ex-
tension of contact area on the tire with ground, reduction of the tractor pressure on the
ground, and improvement of gripping features. Therefore, when the tractor is operated on
mellow soils with low supporting capacity it is recommended to reduce tire pressure down
to the minimum value permissible for such load. Noncompliance with pressure rates re-
duces tire life significantly.
Use of tire sizes unspecified by the manufacturer and operation of the chassis with
overload caused by excess of maximum bearing capacity of the tires (for the given pres-
sure and speed) and tractor axles can result in failure and damage not only to the chassis
(tire carcass rupture, etc.), but also to other tractor units, or can cause accidents and the
overall tractor operating life reduction.
Constantly check the tire pressure and adjust it if necessary with regard to specific
load and selected travel speed.
Permissible loads on the tractor tires and internal air pressure values corresponding
to them depending on the travel speed are specified in subsection 3.2.8 “Selection of op-
timal inner pressure in tires depending on operational conditions and load on tractor axles,
instructions for use of tires.”
In the specified case of the tractor application, exact amount of load that falls on the
front and rear wheels shall be determined according to subsection 4.12 “Finding of total
weight, loads on the front and rear axles, tire bearing capacity and required minimum bal-
last”