Usage Patterns Of Tractor Hydraulic System For Drive Of Operating Parts And Other Elements Of Hydraulically-Powered Coupled Machines And Implements - Belarus 922.6 Operator's Manual

4.5 Usage patterns of tractor hydraulic system for drive of operating parts and
other elements of hydraulically-powered coupled machines and implements
Hydraulic control system for implements mounted on tractors "BELARUS-922.6" pro-
vides an opportunity for oil extraction for the coupled implements operation. The following
variants of oil extraction are possible:
- oil extraction by unilateral and bidirectional hydraulic cylinders;
- replenishment of oil volume in the tank caused by filling of cylinder and the imple-
ment fittings shall be provided after testing the performance of the tractor hydraulic system
with the implement;
- oil extraction for hydraulic motors drives, in this case the implement applicability
shall be stipulated with the tractor plant-manufacturer.
While operating hydraulically-powered machines having hydraulic motors, the hy-
draulic motor drain pipe shall be connected to a special tractor outlet to ensure free oil drain
into the tank past the distribution valve.
ATTENTION: FOR PROVIDING NECESSARY ROTATIONAL SPEED OF THE
COUPLED IMPLEMENT HYDROMOTOR, CERTAIN OIL SUPPLY IS REQUIRED. HY-
DRAULIC FLUID SUPPLY ON THE TRACTOR "BELARUS-922.6" DEPENDS ON THE
ENGINE RPM, FOR THIS REASON THE IMPLEMENT HYDRAULIC DRIVE SHALL BE
EQUIPPED WITH ITS OWN FLOW ADJUSTING VALVE!
In case of using tractor hydraulic system outputs for the coupled implement service, it
is necessary to ensure the required volume of oil in the tank. Oil extraction by cylinders of
the coupled implement shall not exceed 10 liters.
Excessive oil extraction during coupling causes load increase on the tractor hydraulic
system. If using a hydraulic drive for a long time, it is necessary to check the temperature
range in the hydraulic system.
Level check in the tractor hydraulic tank and its refilling shall be carried out with the
operating cylinder retracted plungers on the coupled implement and on the tractor. It is for-
bidden to fill in the oil when the coupled implement plungers are put forward as it can result
in the tank overflow and the hydraulic drive elements blowout because of the excessive oil
displacement from cylinders at the subsequent lowering (uplift) of the operating parts.
The main characteristics of tractor "BELARUS-922.6" HLL for drive of operating parts
and other elements of coupled hydraulically-powered implements and machines are shown
in Table 4.5.1
111
922.6-0000010 OM