Belarus 3522.5, Operator'S Manual

Page: 250 / 340

3522.5-0000010 OM
251
5.5 Usage patterns of tractor hydraulic system for driving of operated parts
and other elements of unitized hydraulically operated machines and aggregates
Hydraulic control system for implements mounted on tractor “BELARUS-3522.5”
provides means for oil extraction for operation of the implements coupled. Meanwhile the
following variants are possible:
- oil extraction by unilateral and bidirectional hydraulic cylinders (hereinafter referred
to as hydraulic cylinders);
- replenishment of oil volume in a tank caused by flooding of cylinder and fittings
chambers shall be assured after trial of performance of the hydraulic system of the tractor
with an implement;
- oil extraction for hydraulic motors drives (hereinafter referred to as hydromotors).
Application for coupling of hydraulically operated machines for their connection to
the oil pipeline channel and high pressure hoses of less diameter (refers to flow passage)
than on tractors is not allowed as it will result in premature failure of tractor pump and oil
overheating.
While operating hydraulically operated machines having hydromotors it is required
to connect a hydromotor drain line to a special output of a tractor for free non-ramming oil
drain in a tank past a distribution valve.
ATTENTION: FOR ENSURING OF THE REQUIRED ROTATIONAL SPEED OF
THE HYDROMOTOR OF THE IMPLEMENTS COUPLED CERTAIN OIL SUPPLY IS
NECESSARY. HYDRAULIC FLUID FEEDING ON THE TRACTOR “BELARUS-3522.5” IS
REGULATED BY MEANS OF JOYSTICKS. THEREFORE, IF THE IMPLEMENT HY-
DRAULIC DRIVE HAS ITS OWN FLOW CONTROL VALVE THE FLOW ADJUSTER OF
THE IMPLEMENT HYDROMOTOR SHALL BE SET ON FULL SPEED RPM, NAMELY TO
EXCLUDE FROM OPERATION!
Tractor hydraulic systems and the implements coupled must be joined via special
joint sleeves (fast-coupling, cut-off) that should be cleared of dirt before joining. In case of
absence of the required plug contacts on the implements coupled, it is necessary to use
the plug contacts from a tractor spare parts tools and accessories (SPTA) kit (there are
eight plug contacts available for connection to a distribution valve and two plug contacts
for connection to free non-ramming drain line).
In case of use of outputs of tractor hydraulic lift linkage for service of the implement
coupled, it is necessary to ensure the required volume of oil in a tank. Extraction of oil by
cylinders of the implement coupled should not exceed 30 liters.
Excessive oil extraction during coupling causes load increase on hydraulic lift link-
age of a tractor. Therefore it is recommended to land the working attachment after working
operation accomplishment. Do not leave the implement coupled in raised position for a
long period. At long-term use of a hydraulic drive it is necessary to track a temperature
range in a hydraulic system.
Level check in a tractor hydraulic tank shall be carried out with RLL and FLL lower
drawbars landed and retracted cylinder of the implements coupled. You must not fill in the
oil when working attachments of the implement coupled are in raised position as it can re-
sult in the tank overflow and blow-out of elements of a hydraulic drive by the excessive oil
being displaced from cylinders at the subsequent landing of the working attachments.
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