Belarus 2022.6 Operator's Manual page 16

Rear axle:
- with the main drive – a pair of bevel pinions with circular teeth;
- with the hub drive – a pair of cylindrical gears;
- with final drives – of planetary type;
- with a differential – with mechanical blocking, and electrohydraulic control.
Brakes: operating brakes are multi-disk, oil-lubricated, located on drive pinion shafts
of hub drive. Operating brakes control is interlocked with pneumatic drive of trailer brakes.
Operating brakes control drive is hydrostatic.
Parking brake is combined with operating brakes, with independent manual me-
chanical control. Parking brake control is interlocked with pneumatic drive of trailer brakes.
Trailer brakes control drive is either double-wire pneumatic, or single-wire pneumatic
or hydraulic, interlocked with tractor operating brakes control. Against order, tractor can be
not equipped with pneumatic drive of trailer brakes – tire inflation shall be carried out
through a valve in the pneumatic compressor.
The rear power take-off shaft is continuous, four-speed, with smooth start, having two
modes – standard and economic.
The direction of rotation is clockwise as viewed from the side of the shaft end exten-
sion butt end.
The first variant of supply:
The tractor is equipped with PTO 3 shaft end extension (20 splines) according to
GOST 3480.
PTO 1c shaft end extension (8 splines) according to GOST 3480 and PTO 2 shaft
end extension (21 splines) according to GOST 3480 and ISO500 are included into tractor
SPTA.
The second variant of supply:
The tractor is equipped with PTO 2 (21 splines) according to GOST 3480 and ISO
500.
PTO 1 (6 splines) according to ISO500 and PTO 3 shaft end extension (20 splines)
according to ISO500 are included into tractor SPTA.
Front PTO (against order) is continuous, one-speed. PTO 2 shaft end extension (21
teeth) complies with GOST 3480. The direction of rotation is clockwise as viewed from the
side of the shaft end extension butt end.
The transmission hydraulic system provides the following:
- switching of GB reduction unit passes, RPTO drive, FPTO drive (against order),
FDA drive, differential lock;
- filtration of transmission oil;
- pressure feed lubrication of gearbox bearings, RA planetary gear reducer, FDA
bearings;
- operation of the clutch hydraulic booster.
The steering is hydrostatic. The feed pump is gear-type, the direction of rotation is
left. The dosing pump is gerotor-type with open center, without steering response. The
type of rotation mechanism is two hydraulic cylinders (Ц50x250) of bidirectional action and
a steering linkage.
The front driving axle is portal-frame, with planetary-cylindrical final gears. The main
drive is a pair of bevel gears with circular teeth. The differential is self-locked, with in-
creased friction. The FDA is driven from the gearbox through the frictional hydraulically-
operated clutch and the crankshaft. The FDA control is electro-hydraulic.
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2022.6-0000010 OM