MTZ 1220.1, Operator'S Manual

Page: 167 / 244

MTZ 1220.1/1220.3 Section I. Coupling of implements
I21
Hauling operations
Actually for the half of the time of its op-
eration, the tractor is used on transport
communication driving on public roads.
Therefore, the transport MTAs are subject
to exclusive safety standards.
According to the State Standard imple-
ments like trailers or semitrailers must be
equipped with service and parking brakes
and with safety chain (ropes). Service
break drive is performed as per one-line
scheme and is controlled from operator’s
working place. Parking brake drive shall
be located on the implement.
The vehicles shall be coupled through
the drawbar hitch DH-2V or DH-3V (lift de-
vice). For the safety reasons, the coupling
with the drawbar hitch DH-1 (crossbar) is
strictly forbidden.
On rear left part of the machines such
as trailers or semitrailers there shall be a
sign of limitation of the maximum speed of
the MTA.
The hole with the diameter of 24 mm in
the both cheeks of the lifting device serve
as a place of attaching the safety chains
(ropes) on the tractor (the fasteners are
included in the standard equipment of the
technical mean to be coupled).
The tractor aggregation with the train
(tractor + semi-trailer + trailer) is only al-
lowed on dry roads with hard pavement
and slopes not exceeding 4%.
When driving to the public roads, the
overall dimensions of the MTA shall not
exceed: width – 2.5 m and height – 3.8 m.
In case of deviations from the provided
norms, the consultation with the state au-
thorities responsible for the traffic safety is
required.
Before transportation of mounted imple-
ments it is necessary to install upper link
to the lower hole in a bracket of rear LL-2
and fix it with retention mechanism against
self-lowering.
Selection of driving speed
The speed of motion of the tractors on
public roads can be limited by the techni-
cal possibilities of the tractor and aggre-
gated machine in accordance with the
sign provided on the technical mean
Carryng capacity of vehicles depends on
terrain relief, slope and road condition.
Taking into account longitudinal slope of
12 degrees, total semitrailer weight (trai-
ler) shall not exceed 10000...12000 kg, on
comparatively flat site — 12000...14000
kg.
Before transportation of mounted imple-
ments it is necessary to install upper link
to the lower hole in a bracket of rear LL-2
(3).
For connection of signalling device of the
implements coupled on the tractor there is
7-pin socket with a socket for power
supply to the devices of the implement
coupled according to local and foreign
standards.
Traveling along the public roads can only
be performed on the direct route. Reverse
movement is forbidden because signaling
and lighting equipment is designed only
for forward movement.