82.3-0000010 OM
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4.3 Rear Lift Linkage
4.3.1 General information
ATTENTION: BEFORE LEAVING THE TRACTOR FOR ANY TIME PERIOD, EN-
SURE TO PUT THE LINKED IMPLEMENT ON THE GROUND!
ATTENTION: MAXIMUM LIFTING POWER VALUE OF LIFT LINKAGE AT THE
SUSPENSION AXIS DETERMINES TECHNICAL OPERABILITY OF THE LIFT LINKAGE,
BUT NOT PERMISSIBLE WEIGHT OF THE IMPLEMENT COUPLED THROUGH IT.
PERMISSIBLE WEIGHT OF THE MOUNTED IMPLEMENT DEPENDS ON THE OVER-
HANGING LENGTH OF THE CENTER OF MASS AGAINST THE SUSPENSION AXIS,
AND IT IS LIMITED BY PERMISSIBLE LOADS ON THE TRACTOR AND BY CONTROL-
LABILITY CRITERION!
ATTENTION: WHEN OPERATING LIFT LINKAGES, MAKE SURE THAT THIRD
PERSONS ARE AT A SAFE DISTANCE FROM LIFT LINKAGES!
ATTENTION: WHEN RAISING A LIFT LINKAGE WITH A HEAVY MOUNTED IM-
PLEMENT, THE TRACTOR’S CENTER OF MASS CHANGES ITS POSITION. THERE-
FORE DISTRIBUTION OF LOAD ON TRACTOR FRONT AND REAR WHEELS CHANG-
ES, WHICH CAN DECREASE TRACTOR STABILITY AND THUS CAN RESULT IN
TRACTOR TURNOVER OR LIFT-OFF OF FRONT WHEELS FROM THE GROUND. EX-
ERCISE CAUTION WHEN LIFTING HEAVY-LOADED MOUNTED IMPLEMENTS AND
OPERATING THE TRACTOR WITH UPLIFTED HEAVY-LOADED MOUNTED IMPLE-
MENTS!
The rear lift linkage complies with the requirements of ISO 4254-3.
4.3.2 Three-point rear lift linkage
Three-point rear lift linkage of “BELARUS-82.3” tractor is made according to State
Standard GOST ISO 730-2019. Basic parameters of RLL specified in Table 4.3.1 and in
Figure 4.3.1 are given for rear tires of standard configuration (18.4R34 both single and
twinned) mounted on the tractor and with standard static radius, specified by the tire
manufacturer.
Rear lift linkage consists of three links (one upper and two lower links) coupled with
the tractor with front ends by means of hinged joints, and with rear ends with free hinged
joints for coupling to the connecting pins of the implements to be coupled. RLL is designed
for connection of rear implements, for transferring tow power during operation and for ad-
justing their position during operation or movement in transport position. RLL provides for
coupling of the following types of implements and machines:
- mounted implement fixed in three points (upper link and lower links);
- semi-mounted (lower links);
- semi-trailed with a crossbar to the suspension axis of lower links.
ATTENTION: IT IS ALLOWED TO MOUNT A CROSSBAR OR TRAILING SUS-
PENSION AXIS BEING A PART OF THE IMPLEMENTS KIT TO THE RLL LOWER LINKS
ENDS FOR COUPLING OF SEMI-MOUNTED, SEMI-TRAILED AND TRAILED IMPLE-
MENTS, FOR PERFORMANCE OF DIFFERENT WORK WITH THE TRAVEL SPEED
NOT MORE THAN 15 KM/H!
Sizes and design of RLL for tractor “BELARUS-82.3” make it possible to couple all
implements having the appropriate dimensions of the coupling triangle connecting ele-
ments shown in RLL diagram.
Rear lift linkage diagram of type “NU-2” is shown in figure 4.3.1.
To prevent the coupled implements from swaying, length-adjustable external or in-
ternal limiting buckles are used.
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