BELARUS-1523/1523
В
/1523.3
/1523В.3
Construction and Operation
141
1 – reverse tap
(Кр 1);
2 and 3– metering pump
(НД2);
4 – hydraulic cylinders (
Ц1
and
Ц2); 5
– pressure
reduction valve
(КР1);
6 – oil tank
(Б1);
7– feeding pump
(Н1); КО1
– hydraulic check valve
; КО2, КОЗ
–
anti-vacuum hydraulic valves;
КО4
– hydraulic check valve
; КП2
– hydraulic relief valve
; КПЗ, КП4
– anti-
hammer hydraulic valves
; Ф1
– draining filter
; ФЭ1
– filter cartridge
ЭФОМ 635
-1-06;
Р
– discharge
; Т
–
draining; L – left turn; R – right turn.
The metering pumps (2 and 3) are in-
stalled on the steering columns fastened
on the front and rear walls of the cab,
respectively; the hydraulic cylinders of
turning (4) are installed on the front axle
of the tractor, the feeding pump (7) is in-
stalled on the engine and the reverse
tap – on the clutch housing. The meter-
ing pumps (2 and 3) are connected by
means of the oil pipelines with the
chambers of the hydraulic cylinders of
turning, feeding pump and oil tank (6).
The reverse tap sends the oil flow from
the feeding pump to one of the metering
pumps. During the straight-ahead mo-
tion, the chambers of the cylinder (4) are
closed by the spool belts of the metering
pump (2 or 3), and the oil fed from the
feed pump (7) and brought to the meter-
ing pump (2 or 3) returns to the oil tank
(6). When the steering wheel is turned,
the spool valve of the metering pump (2
or 3) is displaced providing in such a
way for oil supply to the chambers of the
hydraulic cylinder of turning (4) in the
amount proportional to the angle of turn
of the steering wheel. From the other
chamber of the hydraulic cylinder (4), oil
returns into the oil tank through the me-
tering tank (2) or (3).
ATTENTION!
The hydraulic system of steering control
(HPS) of the BELARUS-
1523В/1523В.3
tractors is provided with the reverse tap
(1) for ensuring the tractor steerability
when moving in both forward and re-
verse direction.
The reverse tap (1) is installed to the
right on the clutch housing.
The reverse tap (1) is controlled by shift-
ing the handle to one of two positions
until it is fixed in each of them.
Recommendations for use
Prior to starting the engine, it is neces-
sary to make sure that the control lever
of the reverse tap (1) is set to the posi-
tion corresponding to the selected direc-
tion of travel of the tractor.
Here:
- for driving the tractor during the for-
ward-motion mode, the reverse tap han-
dle (1) shall be lifted upwards until it is
fixed;
- for driving the tractor during the re-
verse-motion mode, the reverse tap
handle (1) shall be pushed downwards
until it is fixed.
IMPORTANT!
To ensure the operation of the steering
control in the necessary direction of mo-
tion of the tractor, the reverse tap (1)
shall be only repositioned when the en-
gine is not running to avoid the HPS
feed pump breakage or rupture of the
high-pressure feeding hoses and oil
pipelines.
Summary of Contents for 1523
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