KIROVETS K-744R1, K-744R2, K-744R3, K-744R4 tractors
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In order to connect corresponding hydraulic lines of the hydraulic system of agricultural ma-
chine or implement to be hooked up with tractors to the tractors, and to prevent oil leaks from
high-pressure hydraulic hoses in case of their disconnection or emergency rupture, four pairs
of quick lock rupture members are provided (Fig.30).
In order to reduce peak loads arising upon changeover of gate valves of the operating
equipment hydraulic distributor in the tractor hydraulic system (at the “pipe - hydraulic distrib-
utor” route), a hydraulic accumulator is installed (Appendix 2).
CAUTION! ACCUMULATOR IS A PRESSURISED VESSEL. IT IS ABSOLUTELY
PROHIBITED TO WELD OR DISASSEMBLE THE HYDRAULIC ACCUMULATOR
HOUSING.
The hydraulic accumulator requires periodic inspection for the sufficiency of nitrogen filling
pressure. Hydraulic accumulator charging pressure should be 83...85 bar.
It is necessary to perform the first inspection after the first 10 hours of tractor operation, the
subsequent inspections shall be carried out once every 6 months or upon tractor launch into
operation after long-term storage.
CAUTION! THE INSPECTION SHALL BE PERFORMED BY TRAINED
PERSONNEL USING SPECIAL TOOLS.
Perform the inspection as follows:
1. Shut off the engine, set all hydraulic dis-
tributor handles into the “floating” position.
2. Remove cap 3 and check the filling pres-
sure by means of a special tool, the pressure
should be 80...85 bar. When the pressure is
lower, perform refill with nitrogen.
Mechanical impacts on the housing can lead to its damage and loss of serviceability of the
hydraulic accumulator. Pay increased attention to the necessity of execution of erection-
dismantling operations in the hydraulic system only when there is no pressure therein.
The hydrostatic power steering for tractor turns, steering column adjustable by angle and
height, instrument panel with automatic control of the operation of tractor systems significant-
ly facilitate driver’s work.
