Belarus 1523, Operating Manual

Page: 204 / 312

BELARUS- 1523/1523В /1523.3 /1523В.3 Aggregating the Tractor
193
The rear hitch linkage НУ -2(3) is made to
Cat. 3, with a potential of being read-
justed to Cat. 2 by replacing the inde-
pendent joints of a quick-hitch mecha-
nism (GHM). The provision of replace-
able Cat. 3 and 2 joints makes it possible
to carry out simple readjustments and to
use agricultural machinery for Class 2
and 1.4 tractors in adverse weather con-
ditions or on heavy-textured soils.
The left-hand drop link is set to 740 mm
and needs no readjustment, but in case
of exigency.
The drop links are provided in addition to
the main hole for coupling to the lower
links with a slot to join up the wide-span
machines and to follow the field relief
more closely (cultivators, planters, and
others).
The automatic hitch couplers CA-2 and
CA-1 can be provided for the rear and
front hitch linkages, respectively.
A single crossbar ТСУ -1 is provided to
be installed at the rear hitch linkage axis.
When the PTO shaft is to be used, a uni-
versal-joint shaft with the nominal length
of 1000 mm may be recommended. In
this case the mounting axis should be
located at the middle of the universal-
joint shaft; otherwise the PTO will be
overload.
The tractor is equipped with three pairs
of free hydraulic system outlets intended
for connection to attached technical fa-
cili ties (if no front coupler НУ -2 is avail-
able).
The oil consumption through the outlets
is 45…55 l/min. (depending on the tech-
nical condition of the hydraulic pump).
The oil intake by the hydraulic cylinders
should not exceed 25 l. The oil level in
the hydraulic tank shall be carried out
with the service cylinders rods fully
drawn-in.
To avoid the oil losses when aggregating
the technical means or in case of unex-
pected disconnection, the quick-hitch
mechanisms, cut-off and break-off fittings
are provided (male half-couplings and
break-away couplings), which are deliv-
ered optionally in the tractor’s SPTA kit.
ATTENTION! The hydraulic system of
the attached machine shall be coupled
to the tractor hydraulic system by
means of quick-hitch couplings. The
coupling devices of semi-trailed ma-
chines should have adjustable support.
The hydrostatic power takeoff is possible
through one of the outlets for driving the
auxiliary hydraulic motors. To avoid
overheating of the hydraulic system, the
operating pressure shall not exceed 11
MPa that corresponds to the power of
not more than 10 kW. To drain oil from
the hydraulic motor bypassing the dis-
tributor, a separate pipeline is fitted.
The tractor incorporates the hydraulic
valves and accessories with nominal
cross-section Ду = 12 mm and coupling
thread М20х1 .5. If necessary, the suit-
able adaptors with nominal cross-section
of at least Ду = 12 mm should be made
by the user for connecting the machines
with other fittings than those specified
above.
The haul-and-
draw coupler ТСУ -3B (lift
type), page 181, and ТСУ - 2Р (типа “ Py-
thon”), page 180 are used as intended.
The ТСУ - 2В coupling element is located
at the distance of 111 mm away from the
PTO end-face and will accept a substan-
tial vertical load with sufficient longitudi-
nal stability of the aggregate. The ТСУ -
3В yoke is located at the distance of 320
mm away from the PTO end-face, thus,
making it possible to attach the semi-
trailed and pull-up machines with active
drive and providing a larger angle be-
tween the tractor and the facility while
the aggregate is turning. To achieve the
required handling criterion, the vertical
load on the ТСУ - 3В yoke is reduced as
compared to that on the ТСУ - 2В yoke .