MTZ 1220.1/1220.3
Section I. Coupling of implements
I17
Tires inflation
Inflate the tires using an air bleed valve of
a pressure regulator (1) in the following
order:
• bleed air from a balloon (3) of the
pneumatic system through a valve of
condensate ejection valve;
• unscrew a butterfly-nut (2) of an air
bleed valve connecting pipe;
• connect a tire inflation hose to the air
bleed connecting pipe and a tire’s valve;
• switch a compressor on and inflate a
tire up to a required pressure level,
controlling it by a tire manometer;
IMPORTANT! If pressure in a balloon
exceeds 7,7 kgf/cm
2
, the compressor is
switched over to idling by a pressure reg-
ulator and tires inflation stops automati-
cally. Thus, control a pressure level by an
indicator on the dashboard and decrease
pressure through a condensate ejection
valve if necessary.
• disconnect the pump from the tire’s
valve and the air bleed valve connecting
pipe;
•
switch a compressor off and screw a
butterfly-nut on the air bleed valve
connecting pipe;
Selection of implements
Tractor can be coupled with implements in
drawbar Cat. 2 and with implements from
the set for wheeled tractors of Cat. 3. Be-
sides in adverse conditions on heavy tex-
tured soils use of implements from the set
to tractors of Cat. 1.4 is permitted. Cor-
respondence of DH, PTO shafts, hydraulic
outputs design to the International Stan-
dards requirements allows coupling with
imported implements.
Procedure for MTU composition and op-
erating features are set forth on operation
manuals to the implements coupled. In all
cases it is necessary to check for com-
pliance with requirements to connecting
components, lift linkages and tires carry-
ing capacity, permitted load on DH and
tractor axles, controllability criterion.
The working width and operating depth of
an implement/machine depend basically
on the specific resistance of soils which
defines the operating speed range with
due account of the agricultural require-
ments. The heavier is the soil, the higher
is the unit resistance. Based on the aver-
age traction effort of 18...27 kN developed
by a Class 2 tractor on a stubble field, a
rough estimate of the working width for the
main power-consuming agricultural ma-
chine coupled to a tractor has been made.
The results shown make it possible to
choose agricultural machines/implements
by their working widths including echelon
arrangement obtained by means of cou-
pling devices (harrows, cultivators, seed-
ing machines, etc.).
Specific resistance is shown at processing
speed of 5 km/h. Change of speed by 1
km/h changes specific resistance up to
1%.
Interspace cultivation of cultivated crops is
ensured on narrow-width tires (optional
configuration) in the interspaces from 450
to 900 mm.
However interspace cultivation of corn,
cotton and similar crops is possible on
tires of standard configurations.
According to the drawbar characteristics
tractor can be coupled with 4-6-rows
group of implements for cultivation of po-
tatoes in rest-balk, 12- rows group of im-
plements for cultivation of sugar beet, 8-
12- rows group of implements for cultiva-
tion of corn, sunflower, soya bean and
other similar crops.
Technical means
Unit resistance, kN
Возможная
ширина
захвата
,
м
Summary of Contents for 1220.1
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Page 161: ...MTZ 1220 1 1220 3 Section I Coupling of implements I15...
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