Hydrostatic Power Steering - Belarus -1523 Operating Manual

BELARUS-1523/1523В/1523.3/1523В.3

HYDROSTATIC POWER STEERING

Forward-Motion HPS
The HPS is intended for controlling the
turning of the steerable wheels and re-
ducing the force to be applied to the
steering wheel for turning the tractor. The
HPS consists of a metering pump (1),
two differential hydraulic cylinders (3)
1 – metering pump; 2 – feeding pump; 3 – hydraulic cylinders; 4 – oil tank.
Construction and Operation of the HPS
The direct-acting metering pump (1) is
installed on the bracket of the steering
column; the turn hydraulic cylinder (3) –
on the brackets attached to the FDA and
the feed pump (2) – on the engine. The
metering pump is connected to the
chambers of the hydraulic cylinder of
turning, feed pump and oil tank via pipe-
lines.
When in a straight-ahead motion, the cyl-
inder chambers are closed by the meter-
executing the turn, feeding pump (2)
driven from the engine and hydraulic fit-
tings.
The HPS oil tank is the right-hand sec-
tion of the oil tank (4) with the 25-micron
filter of the working fluid.
ing pump spool belts, and the oil fed from
the feed pump and brought to the meter-
ing pump returns to the oil tank. When
the steering wheel is turned, the meter-
ing spool-valve is displaced providing in
such a way for oil supply to the cham-
bers of the hydraulic cylinder of turning in
the amount proportional to the angle of
turn of the steering wheel.
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Construction and Operation