Tractor Composition - Belarus 3522.5 Operator's Manual

1.3 Tractor composition

Tractor framework – frame-type.
Undercarriage: front and rear driving wheels, with pneumatic tyres. Steering wheels
are front wheels. The wheels are twinned by means of spacers. Rear wheels are twinned by
means of spacers. Front wheels are twinned by means of clampbands.
Engine – TCD 7,8 L06.
System of engine lubrication is combined, with the liquid-oil heat exchanger. Oil
cleaning is carried out by a full-stream oil filter. The minimum oil pressure at the minimum
idle rotation frequency is not less than 0,08 MPa.
Engine feed system is a Deutz Common Rail fuel system with a two-section pump
of high pressure. There are two fuel filters – coarse filter and fine filter (with dual indecom-
posable filtering element). The turbocharger is a centripetal radial turbine on one shaft with
a centrifugal compressor.
Air purifier is combined. It consists of a precleaner with a built-in block "Multi-
cyclone", a basic filtering element with interlocked filtering channels and a linear direction
of a stream, and an additional secondary filtering element with radial sealing.
System of engine start-up is electric starter. A means of start-up facilitation is an
electric air heater in an inlet collector.
System of engine cooling is liquid, closed with liquid compulsory circulation. For ac-
celeration of engine warming up after start-up and for automatic control of a temperature
mode at various loadings and ambient temperature there is a thermostat.
Cooling system for charged air is of a radiator type. The CAC radiator, intended for
cooling the air, charged into an inlet collector, is mounted in front of a water radiator.
To provide for a required chemical composition of exhaust gases under Tier-IIIB
stage the system of selective catalytic reduction (SCR) is additionally installed in the ex-
haust system.
The coupling clutch is frictional, dry, two-disk, spring-loaded. The CC overlays are
ceramic-metal. The coupling control drive is hydrostatic with hydraulic booster.
The transmission is mechanical, fixed-ratio, with constant-mesh gears. Gear shifting
within ranges is electrohydraulic by means of frictional hydraulically operated clutches.
Switching of ranges is cable-operated by means of tooth clutches.
The rear axle:
- with the main drive as a pair of bevel gears with circular teeth;
- with a differential with a frictional lock clutch;
- with the final drive of a planetary type.
Brakes:
Working brakes are multidisk, oil-lubricated, located on main sun gears of the final
drive. Working brakes control is interlocked with a pneumatic drive of trailer brakes. The
working brakes control drive is hydrostatic.
The parking brake is brought into coincidence with the working brakes, it has an in-
dependent manual mechanical control. The control is interlocked with the pneumatic drive
of trailer brakes.
The trailer brakes control drive is pneumatic, combined, interlocked with tractor
brakes control.
The rear power takeoff shaft is continuous dual-speed, with the soft start-up, it has
two modes: basic and economy. The direction of rotation is clockwise when viewed from
the shaft end face.
The tractor is equipped with the PTO shaft end extension 3 (20 splines).
The tractor set of spare parts, tools and accessories is completed with:
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