BELARUS-1221.2/1221
В
.2/1221.3 Description and operation
111
Rear PTO Control Mechanism
The tractor is equipped with a hydrofi-
cated control mechanism of the rear PTO
(Fig. E-23). This mechanism consists of a
control cock (2) in assembly with tie-rod
(1), hydraulic cylinder (7), which is con-
nected to control shaft (6) (Fig. E-22), and
oil pipelines (3), (5) and (6) (Fig. E-23).
The pressure oil pipeline (3) connects
cock (2) with the FDA control cock. The
control pipeline (6) communicates the
cock (2) with hydraulic cylinder (7).
The tie-rod (1) has two positions:
•
“PTO engaged” – uppermost position;
•
“PTO disengaged” – lowermost posi-
tion.
Distance “A” between the rod (8) head of
the cylinder (7) and the cover on a cor-
rectly adjusted PTO shaft is:
•
64
±
2 mm (PTO engaged);
•
41
±
2 mm (PTO disengaged).
Fig. E-24. Front PTO control mechanism.
1 – bundle; 2 – control panel; 3 – switch; 4 – pushbutton; 5 – pilot lamp; 6 – bundle; 7 – electro-hydraulic dis-
tributor
Front PTO control mechanism
The front PTO is controlled by means of
the electro-hydraulic system.
The electric part of the front PTO
control system is incorporated in the inte-
grated system for controlling the real axle
DL (differential lock), FDA (front driving
axle) drive and front PTO. It consists of the
switch (3), pushbutton (4), pilot lamp (5)
and relay, which are arranged in the con-
trol panel located in the cab to the right
from the operator and interconnected by
means of the cab bundle (1) (that of the
integrated system for controlling the DL,
FDA and front PTO) according to the at-
tached electric diagram. This bundle is
connected with the transmission bundle
(6) (that of the integrated system for con-
trolling the DL, FDA and front PTO), which
Summary of Contents for 1221.2
Page 1: ...BELARUS 1221 2 1221В 2 1221 3 1221 0000010РЭ OPERATORS MANUAL 2009 ...
Page 290: ...BELARUS 1221 2 1221В 2 1221 3 Supplement 293 Electrical scheme of tractor connections ...
Page 291: ...BELARUS 1221 2 1221В 2 1221 3 Supplement 294 Variants of tractor connections ...
Page 293: ...BELARUS 1221 2 1221В 2 1221 3 Supplement 290 826 3805010 instrument board scheme ...
