Belarus 1523, Operating Manual

Page: 156 / 312

BELARUS-1523/1523 В /1523.3 /1523В.3 Construction and Operation
147
HYDRAULIC LIFT LINKAGE (HLL)
The system is designated for attaching
the mounted and semi-mounted agricul-
tural machines to the tractor, controlling
their operation as well as ensuring the
performance of the hydraulically-driven
tools of the machines to be aggregated
with the tractor.
Hydraulic System
The hydraulic system serves for operat-
ing the lift linkage and hydraulically
driven tools of the agricultural machines
aggregated with the tractor. It provides
the means of employment of height,
draft, position or combined control
modes for adjusting agricultural ma-
chine/implement tools operating depth.
The lift linkage is controlled by an elec-
tromagnet controller which allows for
employment of the draft, position and
combined controls of tools when operat-
ing the mounted and semi-mounted agri-
cultural machines and implements.
The hydraulic system (see below) in-
volves an oil tank (1) with a 25-micron
discharge filter (2), gear pump (4) with its
drive (3) mounted on the left-hand side of
the clutch housing, and an integrated
block BOSCH (5)* consisting of a spool
valve-type distributor for controlling the
external hydraulic cylinders and a con-
troller for electromagnetic control of the
mounted implement (MI). The hydraulic
units are coupled through a low-pressure
mainlines (7, 8) and the pumping under
pressure is performed through the high-
pressure hose (6) and pipeline (9).
1 – HLL oil tank; 2 – discharge filter; 3 – oil pump drive; 4 – oil pump; 5 – integrated block
*
(hydraulic dis-
tr controller with electromagnetic control); 6, 9 – pressure oil pipeline; 7, 8 – drain oil pipeline.
*
Prior to installation of the integrated block, an independent distributor and controller BOSCH assembly
may be employed.