MTZ K-744R1, Operating Instruction

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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 the agricultural
machine or implement to be hooked up with tractors to the tractors, prevent oil leaks from high-
pressure hydraulic hoses during their disconnection or in case of emergency rupture, four pairs
of quick lock rupture members are provided (Fig.26).
In order to reduce peak loads arising during changeover of gate valves of the hydraulic
distributor o
f tractor service equipment (in the “pipe – hydraulic distributor” route), a hydraulic
accumulator is installed (Appendix 2).
ATTENTION! TGE ACCUMULATOR IS A PRESSURE VESSEL. IT IS ABSOLUTELY
PROHIBITED TO PERFORM WELDING OF THE HOUSING OF HYDRAULIC
ACCUMULATOROR ITS DISMANTLING.
The hydraulic accumulator requires periodic inspection for the sufficiency of nitrogen filling
pressure. The pressure of charging the hydraulic accumulator shall be equal to 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 in every 6 months or upon tractor
commissioning after long-term storage.
ATTENTION! THE INSPECTION SHALL BE PERFORMED BY TRAINED
PERSONNEL USING A SPECIAL INSTRUMENT.
Perform the inspection as follows:
1. Shut off the engine, set all hydraulic distributor handles
into the “floating” position.
2. Loosen locking nut 1 and take off the hydraulic
accumulator from bracket 2. DO NOT UNDO THE HOSE
NUTS!
3. Remove cap 3 and check the filling pressure by means of
a special instrument, the pressure should be 80...85 bar. In
case 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.
For outer illumination and signaling four transport headlights are installed on the tractor with
high and low beams as well as eight lights for service illumination, for direction indicators, four
fender lamps,
“Road-train sign”, two lateral repeaters of direction indicators, two “Stop signal”
lights.