892-0000010B OM
17
1.3 Tractor composition
Tractor framework – semi-frame.
Undercarriage: front and rear driving wheels, with pneumatic tyres of low pressure.
Steering wheels are front wheels. The rear wheels can be twinned by means of spacers.
The BELARUS-892/892.2 tractor is equipped with 4-stroke piston four-cylinder inner
combustion engine with in-line vertical arrangement of cylinders, with direct injection of diesel
fuel and compression ignition.
System of engine lubrication is combined: some parts are lubricated under pressure,
some – by spattering. The lubrication system consists of an oil sump, oil pump, oil radiator,
undismountable full-flow oil filter with paper filtering element (for tractors which are supplied
to countries with tropical climate - centrifugal oil filter).
The engine fuel supply system consists of fuel pump, atomizers, low-pressure pipe-
lines, high-pressure pipelines, coarse fuel filter, fine fuel filter.
System of engine start-up is electric starter. A means of start-up facilitation under low
environmental temperatures are the heating plugs (for tractors which are supplied to coun-
tries with tropical climate – without heating plugs).
System of air delivery consists of a turbocharger, an air pipeline and a system of air purifi-
cation. The turbocharger is executed as follows: radial centripetal turbine and centrifugal single-
stage compressor with cantilever arrangement of wheels in relation to supports. The system of air
purification is combined with dry centrifugal (monocyclone) and oil-bath air purification.
System of engine cooling is closed-type with coolant compulsory circulation executed
by a centrifugal pump. The water pump is driven by a V-belt from the crankshaft pulley. For
acceleration of engine warming after start-up and for automatic adjustment of air tempera-
ture mode at various loadings and ambient temperatures there is a thermostat mounted in
the pressure line.
The coupling clutch is frictional, single-disk, spring-loaded with mechanical control. The
CC overlays are asbestos free (on request cerametallic).
The gearbox is mechanical, step-by-step with mechanical increasing gear.
The rear axle is with the main gear group, differential and final drives.
Brakes: service brakes are multidisks, located on final drive pinion shafts; the parking
brake is disk-type, connected to differential cross via brake shaft, independent, manually
controlled. The trailer brake drive is pneumatic, interlocked with tractor service brake control.
The rear power takeoff shaft is continuous dual-speed (540 and 1000 rpm) and
ground-speed, the direction of rotation is clockwise when viewed from the shaft end face.
PTO shaft end are PTO 1c (8 teeth, 540 rpm), PTO 1 (6 teeth, 540 rpm), PTO 2 (21 teeth,
1000 rpm).
Lateral semi-continuous PTO is two-speed of 618 rpm and 721 rpm. Direction of ro-
tation is contraclockwise when facing the shaft end; shaft end PTO 1c as per GOST 3480
(8 teeth), PTO 1 (6 teeth).
Steering is hydrostatic. The feed pump is gear-type, the direction of rotation is left
side.
The dosing pump is gerotor-type with open center without reaction on the steering
wheel.
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