Order Of Full Water Or Water Solution Drain From The Wheels Tires; Selection Of The Tires Internal Pressure - Belarus 1822.3 Operator's Manual

5.12.7 Order of full water or water solution drain from the wheels tires

For full liquid drain dismount the wheel from the tractor and perform the following:
- deflate the tire and drain the liquid;
- unbend both tire beads from rim seats into its cave from the side opposite to vent
positioning;
- insert two installation shoulder blades between a tire bead and a rim from the side
of the vent at approx. 100 mm to be from it;
- pull over through a rim edge a part of the rim bead at first and than the bead in full;
- withdraw the vent from the opening of the rim in a way ensuring the tube is undam-
aged and the vent is not torn off;
- remove the tube from the tire;
- drain the water from the tire, twirling it with hands;
- then, perform the tire mounting on the wheel rim in compliance with assembly
rules and with the required safety measures;
- remove the cap and pump up a tire with air to achieve to normal pressure accord-
ing to the provisions of subsection 4.2.8 "Choice of the tires optimal internal pressure ac-
cording to the operating conditions, load on the tractor axles, and instructions for tire use";
- put the vent cap on and fix the wheel on the tractor.

5.12.8 Selection of the tires internal pressure

Internal air pressure in the tractor wheels tires depends on their design, number of
cord plies, permissible vertical load on a wheel and permissible driving speed according to
the manufacturer instructions. In case the operating conditions have been changed, adjust
the tire pressure.
Maintenance of the adequate internal pressure in the tires effects significantly
drawbar features, passing ability and tire life. Internal tire pressure reduction promotes ex-
tension of contact area on the tire with ground, reduction of the tractor ground pressure,
and improvement of drawbar features. Therefore when the tractor is operated on mellow
soils with low supporting capacity it is recommended to reduce tire pressure up to the
minimum value permissible for such load. Noncompliance with pressure norm reduces
significantly tires life.
Use of tire standard sizes unspecified by the manufacturer, operation of the chassis
with overload caused by excess of the tires and tractor axles maximum bearing capacity (at
given pressure and speed) can result in failure and damage not only to the chassis (a tire car-
cass break, etc.,), but also to other tractor units, or can cause an accident and the overall trac-
tor operating life reduction.
Check the tires pressure and an adjust it if necessary with regard to specific load and
selected driving speed, loads and speeds!
Permissible loads on the tractors tires and internal air pressure values correspond-
ing to them depending on the driving speed are specified in 4.2.8 "Choice of the tires opti-
mal internal pressure according to the operating conditions, load on the tractor axles, and
instructions for tire use".
In the specified case of the tractor application, exact amount of load fallen on the
front and rear wheels shall be determined by practical weighing of the tractor with the im-
plement coupled. Load per one independently taken wheel shall be determined by halving
of load amount, fallen within the front and rear tractor axis accordingly. Then on the basis
of the received load amount and driving speed the required pressure is selected.
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