2122.6-0000010 OM
18
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. Oper-
ating brakes control drive is hydrostatic.
Parking brake is combined with operating brakes, with independent manual mechanical
control. Parking brake control is interlocked with pneumatic drive of trailer brakes.
Trailer brakes control drive is a combined pneumatic one, interlocked with tractor operat-
ing 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 extension
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) ac-
cording to ISO500 are included into tractor SPTA.
Front PTO 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 ex-
tension butt end.
The transmission hydraulic system provides the following:
- switching of GB reduction unit passes, engagement of GB friction clutches, RPTO
drives, FPTO drive, FDA drive, differential lock;
- filtration of transmission oil;
- pressure feed lubrication of gearbox bearings, RA planetary gear reducer, FDA bear-
ings;
- 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 rota-
tion mechanism is two hydraulic cylinders (
Ц
50x250) 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 increased
friction. The FDA is driven from the gearbox through the frictional hydraulically-operated clutch
and the crankshaft. The FDA control is electro-hydraulic.
The hydraulic lift linkage is universal with electrohydraulic control, on the basis of an ax-
ial-piston pump, providing depth, draft, position and combined adjustment for soil treatment.
The hydraulics has got an integrated unit consisting of four operating service sections of the
distributor with electrohydraulic joystick control, with a possibility to program functions (EHS)
and a regular section of EHR23-LS type to operate the real lift linkage. Four pairs of rear inde-
pendent outlets provide for adjustment of the work fluid supply at each outlet. There is a front
pair of outlets, which is connected to any pair of rear outlets through fast coupling clutches,
when there is a hydraulic implement coupled with the tractor FLL.
Free drain is available at the back and at the front for tractor operation with hydraulic
units with constant delivery, for example, with hydraulic motors.
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