952.5-0000010 OM
70
While using the positional control mode draft control unit provides automatic support
of the agricultural machine command position in relation to the tractor frame. While tillage
with mounted ploughs, cultivators for bund and interrow cultivation as well as for sub-
soiling, it is recommended to use positional control amid flat field relief.
It is necessary to use support wheels on wide-span implements coupled with tractor
while using the positional control mode in order to eliminate agricultural machine trans-
verse wracking, to improve straightness of implement moving and to create better condi-
tions for relief copying in broadside direction (in relation to tractor moving).
While preparing the implement for operation using the positional control mode, do
the following:
- set upper link 2 (figure 2.27.4) of the mounted implement onto the upper link
hole 1 (position “A” in figure 2.27.4);
- couple the mounted implement (machine) with tractor RLL;
- if necessary adjust RLL and the mounted implement;
- switch on the positional control mode by uplifting the mounted implement (ma-
chine) into the extreme upper position, set switch 4 into the positional lever 6
groove by turning the switch right (as viewed along tractor movement) into the
position “I”. For easier switching on before groove entrance, take the switch for-
ward (as viewed along tractor movement) until it couples with the groove on
lever 6;
- turn handwheel of correction speed 3 contraclockwise against the stop setting
maximum uplifting speed at automatic position correction.
At the beginning of operation set the mounted implement into the required position.
Lowering is exercised by shifting handle 2 (figure 2.27.3) forward. The further forward the
handle is set, the lower the implement goes. After fixing the implement into the required
position along the full vertical extent, shift limiter 1 into the handle against the stop and fix
it.
At the end of operation pull handle 2 against the stop to uplift the implement into
transport position. After finishing uplifting, the handle shall naturally return to the neutral
position “N”.
At the beginning of each next operation lower the implement by shifting handle 2
forward against the stop into limiter 1.
Depth control can be applied while tractor coupling with mounted implements that
have support wheels. It implies that the selected depth of cultivation is provided by setting
the specific depth of the coupling with tractor agricultural implement support wheel.
While depth control, set switch 4 (figure 2.27.4) into intermediate position “N”, uplift-
ing RLL into the extreme upper position before that. For implement uplifting pull handle 2
(figure 2.27.3) against the stop and hold it till finishing uplifting, after which the handle shall
naturally return into its neutral position “N”. Lowering is exercised by shifting handle 2 for-
ward into the adjustment zone till the beginning of implement lowering.
Upper link 2 (figure 2.27.4) of the mounted implement is to be set upon the lower
hole of clevis 1 (position “C” in figure 2.27.4);
It is forbidden to set handle 2 in the position “forced lowering” (forward against the
stop) at depth control mode if a mounted implement is coupled with RLL. Use the position
“forced lowering” only while implement coupling with tractor lift linkage. For forced lowering
turn handle 2 into the extreme forward position. After loosening the handle it shall return to
the adjustment zone (intermediate neutral) and RLL lowering shall stop.
